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Document and Entity Information - USD ($) $ / shares in Units, $ in Billions	12 Months Ended
	Dec. 31, 2011	Feb. 01, 2012	Jun. 30, 2011
Document and Entity Information [Abstract]
Document Type	10-K
Document Period End Date	Dec. 31, 2011
Current Fiscal Year End Date	--12-31
Document Fiscal Period Focus	FY
Document Fiscal Year Focus	2011
Entity Registrant Name	PRICE T ROWE GROUP INC
Entity Incorporation, State Country Name	Maryland
Entity Tax Identification Number	522264646
Entity Address, Address Line One	100 East Pratt Street
Entity Address, City or Town	Baltimore
Entity Address, State or Province	Maryland
Entity Address, Postal Zip Code	21202
Entity Listing, Par Value Per Share (in dollars per share)	$ 0.20
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Filer Category	Large Accelerated Filer
Entity Public Float			$ 15.0
Entity Common Stock, Shares Outstanding		253,483,961
Entity Central Index Key	0001113169
Amendment Flag	false

CONSOLIDATED BALANCE SHEETS - USD ($) $ in Millions	Dec. 31, 2011	Dec. 31, 2010
ASSETS
Cash and cash equivalents (Notes 1 and 6)	$ 897.9	$ 813.1
Accounts receivable and accrued revenue (Note 2)	304.5	307.9
Investments in sponsored mutual funds (Notes 3 and 6)	764.5	747.9
Debt securities held by savings bank subsidiary (Notes 4 and 6)	198.4	184.7
Other investments (Notes 5 and 6)	206.3	209.7
Property and equipment (Note 7)	567.4	560.3
Goodwill	665.7	665.7
Other assets (Notes 8 and 9)	165.6	152.7
Total assets	3,770.3	3,642.0
Liabilities
Accounts payable and accrued expenses	82.9	79.4
Accrued compensation and related costs	63.2	71.9
Income taxes payable (Note 9)	30.0	33.8
Customer deposits at savings bank subsidiary (Note 4)	173.5	160.4
Total liabilities	349.6	345.5
Commitments and contingent liabilities (Notes 5, 7 and 13)
Stockholders' equity (Notes 10, 12 and 13)
Preferred stock, undesignated, $.20 par value - authorized and unissued 20,000,000 shares
Common stock, $.20 par value - authorized 750,000,000; issued 258,760,000 shares in 2010 and 253,272,000 shares in 2011	50.7	51.7
Additional capital in excess of par value	502.0	506.3
Retained earnings	2,765.2	2,599.4
Accumulated other comprehensive income	102.8	139.1
Total stockholders' equity	3,420.7	3,296.5
Total liabilities and stockholders' equity	$ 3,770.3	$ 3,642.0

CONSOLIDATED BALANCE SHEETS (Parenthetical) - $ / shares	Dec. 31, 2011	Dec. 31, 2010
Stockholders' equity
Preferred stock, par value (in dollars per share)	$ 0.2	$ 0.2
Preferred stock, shares authorized	20,000,000	20,000,000
Common stock, par value (in dollars per share)	$ 0.2	$ 0.2
Common stock, shares authorized	750,000,000	750,000,000
Common stock, shares issued	253,272,000	258,760,000

CONSOLIDATED STATEMENTS OF INCOME - USD ($) $ in Millions	12 Months Ended
CONSOLIDATED STATEMENTS OF INCOME - USD ($) $ in Millions	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Revenues
Investment advisory fees (Note 2)	$ 2,349.0	$ 2,026.8	$ 1,546.1
Administrative fees (Note 2)	321.2	294.3	287.8
Distribution and servicing fees (Note 2)	74.6	43.2	31.0
Net revenue of savings bank subsidiary (Note 4)	2.3	2.9	2.5
Net revenues	2,747.1	2,367.2	1,867.4
Operating expenses
Compensation and related costs (Notes 7, 10 and 13)	969.8	860.4	773.4
Advertising and promotion	90.8	86.9	73.2
Distribution and servicing costs	74.6	43.2	31.0
Depreciation and amortization of property and equipment	72.0	62.6	65.2
Occupancy and facility costs (Note 7)	115.0	109.1	102.4
Other operating expenses	198.0	168.5	120.6
Total operating expenses	1,520.2	1,330.7	1,165.8
Net operating income	1,226.9	1,036.5	701.6
Non-operating investment income (loss)	23.7	33.5	(12.7)
Income before income taxes	1,250.6	1,070.0	688.9
Provision for income taxes (Note 9)	477.4	397.8	255.3
Net income	$ 773.2	$ 672.2	$ 433.6
Earnings per share on common stock (Note 11)
Basic (in dollars per share)	$ 3.01	$ 2.60	$ 1.69
Diluted (in dollars per share)	$ 2.92	$ 2.53	$ 1.65

CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Cash flows from operating activities
Net income	$ 773.2	$ 672.2	$ 433.6
Adjustments to reconcile net income to net cash provided by operating activities
Depreciation and amortization of property and equipment	72.0	62.6	65.2
Stock-based compensation expense	98.7	89.5	89.1
Intangible asset amortization	0.4	0.4	0.5
Other than temporary impairments of investments in sponsored mutual funds			36.1
Changes in accounts receivable and accrued revenue	2.8	(62.5)	(69.3)
Changes in payables and accrued liabilities	(4.9)	26.7	(15.6)
Other changes in assets and liabilities	6.2	(56.1)	(4.0)
Net cash provided by operating activities	948.4	732.8	535.6
Cash flows from investing activities
Investment in UTI Asset Management Company Limited		(143.6)
Investments in sponsored mutual funds	(62.2)	(26.3)	(74.3)
Dispositions of sponsored mutual funds	0.1	21.2	56.6
Investments in debt securities held by savings bank subsidiary	(65.0)	(55.7)	(62.3)
Proceeds from debt securities held by savings bank subsidiary	52.0	53.6	53.0
Other investments made	(9.4)	(11.3)	(7.1)
Proceeds from other investments	1.8	3.2	1.3
Additions to property and equipment	(82.3)	(118.0)	(133.9)
Net cash used in investing activities	(165.0)	(276.9)	(166.7)
Cash flows from financing activities
Repurchases of common stock	(479.7)	(240.0)	(71.0)
Common share issuances under stock-based compensation plans	50.6	83.0	47.7
Excess tax benefits from stock-based compensation plans	35.3	50.7	32.0
Dividends	(317.9)	(278.9)	(256.9)
Change in savings bank subsidiary deposits	13.1	(0.9)	3.5
Net cash used in financing activities	(698.6)	(386.1)	(244.7)
Cash and cash equivalents
Net change during year	84.8	69.8	124.2
At beginning of year	813.1	743.3	619.1
At end of year	$ 897.9	$ 813.1	$ 743.3

CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) shares in Thousands, $ in Millions	Common stock [Member]	Additional capital in excess of par value [Member]	Retained earnings [Member]	Accumulated other comprehensive income (loss) [Member]	Total
Balances at Dec. 31, 2008	$ 51.4	$ 363.7	$ 2,086.8	$ (13.1)	$ 2,488.8
Balances (shares) at Dec. 31, 2008					256,856
Comprehensive income
Net income			433.6		$ 433.6
Net unrealized holding gains (losses), net of tax				115.0	115.0
Total comprehensive income					548.6
Dividends			(256.9)		(256.9)
Common stock-based compensation plans activity
Shares issued upon option exercises	$ 0.7	48.0			48.7
Shares issued upon option exercises (shares)	3,660
Restricted shares issued, net of shares withheld for taxes	$ 0.1	(0.7)			(0.6)
Restricted shares issued, net of shares withheld for taxes (shares)	257
Shares issued upon vesting of restricted stock units	$ 0.0	(0.4)			(0.4)
Shares issued upon vesting of restricted stock units (shares)	52
Forfeiture of restricted awards	$ 0.0	0.0
Forfeiture of restricted awards (shares)	(21)
Net tax benefits		31.9			31.9
Stock-based compensation expense		89.1			89.1
Common shares repurchased	$ (0.5)	(43.1)	(23.4)		(67.0)
Common shares repurchased (shares)	(2,270)
Balances at Dec. 31, 2009	$ 51.7	488.5	2,240.1	101.9	$ 2,882.2
Balances (shares) at Dec. 31, 2009					258,534
Comprehensive income
Net income			672.2		$ 672.2
Net unrealized holding gains (losses), net of tax				33.6	33.6
Currency translation adjustment, net of tax				3.6	3.6
Total comprehensive income					709.4
Dividends			(278.9)		(278.9)
Common stock-based compensation plans activity
Shares issued upon option exercises	$ 1.0	85.5			86.5
Shares issued upon option exercises (shares)	4,933
Restricted shares issued, net of shares withheld for taxes	$ 0.0	(1.8)			(1.8)
Restricted shares issued, net of shares withheld for taxes (shares)	234
Shares issued upon vesting of restricted stock units	$ 0.0	(1.3)			(1.3)
Shares issued upon vesting of restricted stock units (shares)	71
Forfeiture of restricted awards	$ 0.0	0.0
Forfeiture of restricted awards (shares)	(14)
Net tax benefits		50.9			50.9
Stock-based compensation expense		89.5			89.5
Common shares repurchased	$ (1.0)	(205.0)	(34.0)		(240.0)
Common shares repurchased (shares)	(4,998)
Balances at Dec. 31, 2010	$ 51.7	506.3	2,599.4	139.1	$ 3,296.5
Balances (shares) at Dec. 31, 2010					258,760
Comprehensive income
Net income			773.2		$ 773.2
Net unrealized holding gains (losses), net of tax				(27.1)	(27.1)
Currency translation adjustment, net of tax				(9.2)	(9.2)
Total comprehensive income					736.9
Dividends			(317.9)		(317.9)
Common stock-based compensation plans activity
Shares issued upon option exercises	$ 0.6	54.1			54.7
Shares issued upon option exercises (shares)	2,920
Restricted shares issued, net of shares withheld for taxes	$ 0.1	(3.0)			(2.9)
Restricted shares issued, net of shares withheld for taxes (shares)	224
Shares issued upon vesting of restricted stock units	$ 0.0	(1.5)			(1.5)
Shares issued upon vesting of restricted stock units (shares)	92
Forfeiture of restricted awards	$ 0.0	0.0
Forfeiture of restricted awards (shares)	(29)
Net tax benefits		35.9			35.9
Stock-based compensation expense		98.7			98.7
Common shares repurchased	$ (1.7)	(188.5)	(289.5)		(479.7)
Common shares repurchased (shares)	(8,695)
Balances at Dec. 31, 2011	$ 50.7	$ 502.0	$ 2,765.2	$ 102.8	$ 3,420.7
Balances (shares) at Dec. 31, 2011					253,272

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

12 Months Ended

Dec. 31, 2011

Summary of Significant Accounting Policies [Abstract]

Summary of Significant Accounting Policies [Text Block]

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

T. Rowe Price Group derives its consolidated revenues and net income primarily from investment advisory services that its subsidiaries provide to individual and institutional investors in the sponsored T. Rowe Price mutual funds and other investment portfolios. We also provide our investment advisory clients with related administrative services, including distribution, mutual fund transfer agent, accounting and shareholder services; participant recordkeeping and transfer agent services for defined contribution retirement plans; brokerage; and trust services.

Investment advisory revenues depend largely on the total value and composition of assets under our management. Accordingly, fluctuations in financial markets and in the composition of assets under management impact our revenues and results of operations.

BASIS OF PREPARATION.

These consolidated financial statements have been prepared by our management in accordance with accounting principles generally accepted in the United States. These principles require that we make certain estimates and assumptions. Actual results may vary from our estimates.

In 2011, we changed the presentation of our consolidated statements of income. We are presenting distribution and servicing fees earned from 12b-1 plans of the Advisor, R, and VIP II classes of our sponsored mutual funds previously included in administrative fees, as a separate line to enhance transparency of these fees. We also are presenting as a separate line the offsetting distribution and servicing costs, previously included in other operating expenses, paid to third-party financial intermediaries who source those share classes noted above. Investment income earned by our savings bank subsidiary, previously presented on its own, is being classified net of interest expense paid on savings bank deposits. The line was renamed net revenue of savings bank subsidiary and the details of this line are included in note 4 to the consolidated financial statements. All amounts for the comparable calendar years have been reclassified to conform to the 2011 presentation.

Our financial statements include the accounts of all subsidiaries in which we have a majority or controlling interest. All material intercompany accounts and transactions are eliminated in consolidation.

We are not the primary beneficiary, and do not consolidate the accounts, of a high-yield collateralized bond obligation (CBO) that held assets of $5.4 million at December 31, 2011. This variable interest entity is a non-recourse, limited liability company for which we are the collateral manager and receive related investment advisory fees. We recognized the full impairment of our investment in this CBO in 2002 and do not expect to recognize any future gains or losses from this investment.

CASH EQUIVALENTS.

Cash equivalents consist primarily of short-term, highly liquid investments in our sponsored money market mutual funds. The cost of these funds is equivalent to fair value.

INVESTMENTS IN SPONSORED MUTUAL FUNDS.

We value our investments in sponsored mutual funds at the quoted closing net asset values, or NAVs, per share of each mutual fund last reported as of the balance sheet date, and generally classify these holdings as available-for-sale. Changes in net unrealized holding gains on these investments are recognized in accumulated other comprehensive income.

We review the carrying amount of each investment on a quarterly basis and recognize an impairment charge in non-operating investment income whenever an unrealized loss is considered other than temporary. In determining whether a mutual fund holding is other then temporarily impaired we consider many factors, including the duration of time it has existed, the severity of the impairment, any subsequent changes in value and our intent and ability to hold the security for a period of time sufficient for an anticipated recovery in fair value. Subject to the other considerations noted above, with respect to duration of time, we believe a mutual fund holding with an unrealized loss that has persisted daily throughout the six months between quarter-ends is generally presumed to have an other than temporary impairment. We may also recognize an other than temporary loss if particular circumstances of the underlying investment do not warrant our belief that a near-term recovery is possible.

DEBT SECURITIES HELD BY SAVINGS BANK SUBSIDIARY.

Our investments in marketable debt securities, including mortgage- and other asset-backed securities held by our savings bank subsidiary, are classified as available-for-sale and reported at fair value. Changes in net unrealized holding gains on these debt securities are recognized in accumulated other comprehensive income.

These debt securities are generally traded in the over-the-counter market. Securities with remaining maturities of one year or more at the time of acquisition are valued by us based on prices furnished by dealers who make markets in such securities or by an independent pricing service, which considers the yield or price of bonds of comparable quality, coupon, maturity, and type, as well as prices quoted by dealers who make markets in such securities. Securities with remaining maturities of less than one year at the time of acquisition generally are valued at amortized cost, which approximates fair value; however, if amortized cost is deemed not to reflect fair value, such securities are valued by us based generally on prices furnished by dealers who make markets in such securities or by an independent pricing service. Our investment valuation policies, methods and sources are the same as those employed by the sponsored mutual funds to price similar investment holdings.

We review the carrying amount of each investment on a quarterly basis. We will recognize an impairment charge in non-operating investment income if the impairment is caused by a change in credit quality that affects our ability to recover our amortized cost. An impairment charge will also be taken if we intend to sell the security before its maturity, which generally correlates to the maturities of our customer deposits, or if we believe that it is more likely than not that, we will be required to sell the security before recovering cost.

OTHER INVESTMENTS.

We classify some investments in sponsored mutual funds made at fund formation as trading because they are expected to be held for only a short period of time.

Investments that give us the ability to exercise significant influence over the operating and financial policies of the investee are recognized using the equity method of accounting. The carrying value of these investments are adjusted to reflect our proportionate share of income or loss, any unrealized gain or loss resulting from the translation of foreign denominated financial statements into U.S. dollars and dividends received. Our proportionate share of income or loss is included in non-operating investment income (loss) in the consolidated statements of income. As permitted under existing accounting guidance, we adopted a policy by which we recognize our share of UTI Asset Management Company Limited's (UTI) earnings on a quarter lag as current financial information is not available in a timely manner.

We evaluate our equity method investments for impairment when events or changes in circumstances indicate that the carrying value of the investment exceeds its fair value, and the decline in fair value is other than temporary.

Those other investments to which we do not exercise significant influence over the operating and financial policies of the investee are recognized using the cost method of accounting.

CONCENTRATIONS OF RISK.

Concentration of credit risk in accounts receivable is believed to be minimal in that our clients generally have substantial assets, including those in the investment portfolios that we manage for them.

Our investments in sponsored mutual funds expose us to market risk in the form of equity price risk; that is, the potential future loss of value that would result from a decline in the fair values of the mutual funds. Each fund and its underlying net assets are also subject to market risk, which may arise from changes in equity prices, credit ratings, foreign currency exchange rates, and interest rates.

Investments by our savings bank subsidiary in debt securities expose us to market risk, which may arise from changes in credit ratings and interest rates.

PROPERTY AND EQUIPMENT.

Property and equipment is stated at cost net of accumulated depreciation and amortization computed using the straight-line method. Provisions for depreciation and amortization are based on the following weighted average estimated useful lives: computer and communications software and equipment, 3.4 years; buildings and improvements, 32.1 years; leasehold improvements, 8.6 years; furniture and other equipment, 6.6 years; and leased land, 99 years.

GOODWILL.

We evaluate the carrying amount of goodwill in our balance sheet for possible impairment on an annual basis in the third quarter of each year using a fair value approach. Our evaluations have indicated that no impairment exists.

We internally conduct, manage and report our operations as one investment advisory business. We do not have distinct operating segments or components that separately constitute a business. Accordingly, we attribute goodwill to a single reportable business segment and reporting unit — our investment advisory business.

REVENUE RECOGNITION.

Fees for investment advisory services, which are based on a percentage of assets under management, and related administrative services that we provide to investment advisory clients, including our sponsored mutual funds, are recognized in the period that our services are provided.

Our assets under management are valued in accordance with a valuation and pricing policy that defines the valuation and pricing processes for each major type of investment held in our sponsored mutual funds and other client investment portfolios. Fair values used in our processes are primarily determined from quoted market prices, prices furnished by dealers who make markets in such securities, or from data provided by an independent pricing service that considers yield or price of investments of comparable quality, coupon, maturity, and type. Investments for which market prices are not readily available are not a material portion of our total assets under management.

Distribution and servicing fees earned from 12b-1 plans of the Advisor, R, and VIP II classes of our sponsored mutual funds are recognized in the period that they are earned, which is the same period that the related mutual funds recognize their expense. These fees are offset entirely by the distribution and servicing costs paid to third-party financial intermediaries that source these share classes.

We provide all services to the sponsored U.S. mutual funds under contracts that are subject to periodic review and approval by each of the funds' boards. Regulations require that the funds' shareholders also approve material changes to investment advisory contracts.

Taxes billed to our clients based on our fees for services rendered are not included in revenues.

ADVERTISING.

Costs of advertising are expensed the first time that the advertising takes place.

STOCK AWARDS AND OPTIONS.

Our stockholders have approved the 2001 and 2004 Stock Incentive Plans under which we have issued restricted shares and restricted stock units that convert to shares after vesting. Vesting of these awards generally occurs over a four to five-year graded schedule. All restricted shareholders and restricted stock unit holders receive non-forfeitable cash dividends and cash dividend-equivalents, respectively, on our dividend payable date.

Under the two stockholder approved employee plans (the 2001 and 2004 Stock Incentive Plans), we have granted qualified incentive and nonqualified fixed stock options with a maximum term of 10 years to employees. Vesting of our employee option grants is based solely on the individual continuing to render service and generally occurs over a five- to six-year graded schedule. The exercise price of each option granted is equivalent to the market price of the common stock at the date of grant.

We semiannually grant options with a maximum term of 10 years, restricted shares and restricted stock units to non-employee directors under the stockholder approved 2007 plan. These grants vest over six months to one year, and in the case of restricted stock units are settled upon the non-employee directors' departure from the board. Non-employee directors holding restricted shares receive non-forfeitable dividends while restricted stock unit holders are issued non-forfeitable dividend equivalents in the form of vested stock units on our dividend payable date.

We recognize the grant-date fair value of these awards as compensation expense ratably over the awards service period. The expense recognized includes an estimate of awards that will be forfeited. The restricted shares and units are valued on the grant-date using the closing market price of our common stock. We used the Black-Scholes option-pricing model to estimate the fair value of each option grant, including reloads, as follows:


	Weighted-average
	2009			2010			2011
Grant-date fair value per option awarded, including reload grants	$	10.07		$	14.26		$	17.94

Assumptions used:
Expected life in years		6.7			6.7			6.9
Expected volatility		32	%		32	%		33	%
Dividend yield		2.4	%		2.1	%		1.9	%
Risk-free interest rate		2.5	%		2.7	%		2.2	%

Our expected life assumptions are based on the vesting period for each option grant and our historical experience with respect to the average holding period from vesting to option exercise. The assumptions for expected volatility are based on historical experience for the same periods as our expected lives. Dividend yields are based on recent historical experience and future expectations. Risk-free interest rates are set using grant-date U.S. Treasury yield curves for the same periods as our expected lives.

EARNINGS PER SHARE.

We compute our basic and diluted earnings per share under the two-class method, which considers our outstanding restricted stock and stock units, on which we pay non-forfeitable dividends, as if they were a separate class of stock.

COMPREHENSIVE INCOME.

Total comprehensive income is reported in our consolidated statements of stockholders' equity and includes net income, the change in net unrealized security holding gains (losses), after income taxes (tax benefits), and the change in the currency translation adjustment, after income taxes (tax benefits).

CASH EQUIVALENTS.	12 Months Ended
CASH EQUIVALENTS.	Dec. 31, 2011
Cash Equivalents [Abstract]
Cash Equivalents [Text Block]	NOTE 1 — CASH EQUIVALENTS. Cash equivalent investments in our sponsored money market mutual funds aggregate $726.9 million at December 31, 2010, and $823.2 million at December 31, 2011. Dividends earned on these investments totaled $1.6 million in 2009, $.1 million in 2010, and $.1 million in 2011.

- Definition

The entire disclosure for cash and cash equivalent footnotes, which may include the types of deposits and money market instruments, applicable carrying amounts, restricted amounts and compensating balance arrangements. Cash and equivalents include: (1) currency on hand (2) demand deposits with banks or financial institutions (3) other kinds of accounts that have the general characteristics of demand deposits (4) short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Generally, only investments maturing within three months from the date of acquisition qualify.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 02
-Paragraph 1
-Article 5

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 95
-Paragraph 7
-Footnote 1
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 95
-Paragraph 8, 9, 10
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Staff Accounting Bulletin (SAB)
-Number Topic 6
-Section H
-Subsection 3

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Cash
-URI http://asc.fasb.org/extlink&oid=6506951

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Cash Equivalents
-URI http://asc.fasb.org/extlink&oid=6507016

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4273-108586

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.1)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 9: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SAB TOPIC 6.H.3)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13728-122682

+ Details

INFORMATION ABOUT RECEIVABLES, REVENUES, AND SERVICES.

12 Months Ended

Dec. 31, 2011

Information about Receivables, Revenues, and Services [Abstract]

Information about Receivables, Revenues, and Services [Text Block]

NOTE 2 — INFORMATION ABOUT RECEIVABLES, REVENUES, AND SERVICES.

Accounts receivable from our sponsored mutual funds for advisory fees and advisory-related administrative services aggregate $154.0 million at December 31, 2010, and $155.9 million at December 31, 2011.

Revenues (in millions) from investment advisory services provided under agreements with our sponsored mutual funds and other investment clients include:


	2009		2010		2011
Sponsored mutual funds in the U.S.
Stock and blended asset	$	843.7	$	1,116.3	$	1,304.5
Bond and money market		224.6		278.0		303.1

		1,068.3		1,394.3		1,607.6
Other portfolios
Stock and blended asset		391.6		514.4		604.8
Bond, money market, and stable value		86.2		118.1		136.6

		477.8		632.5		741.4

Total	$	1,546.1	$	2,026.8	$	2,349.0

The following table summarizes the various investment portfolios and assets under management (in billions) on which we earn advisory fees.


	Average during						December 31,
	2009		2010		2011		2010		2011
Sponsored mutual funds in the U.S.
Stock and blended asset	$	139.5	$	184.7	$	217.6	$	212.4	$	211.7
Bond and money market		52.3		66.1		74.5		70.2		77.7

		191.8		250.8		292.1		282.6		289.4
Other portfolios
Stock and blended asset		93.3		126.2		149.6		148.2		140.7
Bond, money market, and stable value		36.2		45.6		55.4		51.2		59.4

		129.5		171.8		205.0		199.4		200.1

Total	$	321.3	$	422.6	$	497.1	$	482.0	$	489.5

Investors that we serve are primarily domiciled in the United States of America; investment advisory clients outside the United States account for 11% of our assets under management at December 31, 2011.

Fees for advisory-related administrative and distribution services provided to our sponsored mutual funds were $249.9 million in 2009, $266.8 million in 2010, and $321.6 million in 2011.

INVESTMENTS IN SPONSORED MUTUAL FUNDS.

12 Months Ended

Dec. 31, 2011

Investments in Sponsored Mutual Funds [Abstract]

Investments in Sponsored Mutual Funds [Text Block]

NOTE 3 — INVESTMENTS IN SPONSORED MUTUAL FUNDS.

These investments (in millions) at December 31 include:


	Aggregate		Unrealized holding					Aggregate
	cost		gains		losses			fair value
2010
Stock and blended asset funds	$	281.7	$	178.6	$	—		$	460.3
Bond funds		248.5		39.1		—			287.6

Total	$	530.2	$	217.7	$	—		$	747.9


2011
Stock and blended asset funds	$	281.7	$	137.0	$	(.8	)	$	417.9
Bond funds		310.6		38.5		(2.5	)		346.6

Total	$	592.3	$	175.5	$	(3.3	)	$	764.5

The unrealized holding losses at December 31, 2011, are attributable to ten fund holdings with an aggregate fair value of $86.3 million and are considered temporary.

Dividends, excluding capital gain distributions, earned on sponsored mutual fund investments totaled $9.8 million in 2009, $10.3 million in 2010, and $10.6 million in 2011.

- Definition

Tabular disclosure of investments in certain debt and equity securities (and certain other trading assets) which include all debt and equity securities (other than those equity securities accounted for under the equity or cost methods of accounting) with readily determinable fair values. Other trading assets include assets that are carried on the balance sheet at fair value and held for trading purposes. A debt security represents a creditor relationship with an enterprise that is in the form of a security. Debt securities include, among other items, US Treasury securities, US government securities, municipal securities, corporate bonds, convertible debt, commercial paper, and all securitized debt instruments. An equity security represents an ownership interest in an enterprise or the right to acquire or dispose of an ownership interest in an enterprise at fixed or determinable prices. Equity securities include, among other things, common stock, certain preferred stock, warrant rights, call options, and put options, but do not include convertible debt. An entity may opt to provide the reader with additional narrative text to better understand the nature of investments in debt and equity securities (and other trading assets).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 115
-Paragraph 3, 19, 20, 21, 22, 137
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 30
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6379141&loc=d3e15032-111544

Reference 3: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6872113&loc=d3e27161-111563

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 320
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6957658&loc=d3e62557-112803

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 9
-URI http://asc.fasb.org/extlink&oid=6872113&loc=d3e27357-111563

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-Paragraph 6
-URI http://asc.fasb.org/extlink&oid=6872113&loc=d3e27290-111563

Reference 7: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
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-Paragraph 10
-URI http://asc.fasb.org/extlink&oid=6872113&loc=d3e27405-111563

Reference 8: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
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-URI http://asc.fasb.org/extlink&oid=6872113&loc=d3e27232-111563

Reference 9: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Debt Security
-URI http://asc.fasb.org/extlink&oid=6509901
-Topic 320

Reference 10: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Equity Security
-URI http://asc.fasb.org/extlink&oid=6511694
-Topic 320

+ Details

SAVINGS BANK SUBSIDIARY.

12 Months Ended

Dec. 31, 2011

Savings Bank Subsidiary [Abstract]

Savings Bank Subsidiary [Text Block]

NOTE 4 — SAVINGS BANK SUBSIDIARY.

DEBT SECURITIES.

Our savings bank subsidiary holds investments in marketable debt securities, including mortgage- and other asset-backed securities, which are accounted for as available-for-sale. The following table (in millions) details the components of these investments at December 31.


	2010					2011
			Unrealized					Unrealized
			holding					holding
	Fair		gains			Fair		gains
	value		(losses)			value		(losses)
Investments with temporary impairment (43 securities in 2011) of
Less than 12 months	$	25.0	$	(.4	)	$	22.8	$	(.2	)
12 months or more		6.1		(.4	)		6.3		(.2	)

Total		31.1		(.8	)		29.1		(.4	)
Investments with unrealized holding gains		153.6		4.1			169.3		3.5

Total	$	184.7	$	3.3		$	198.4	$	3.1

Aggregate cost	$	181.4				$	195.3

The unrealized losses in these investments were generally caused by changes in interest rates and market liquidity, and not by changes in credit quality. Impairments of these investments are considered temporary.

CUSTOMER DEPOSITS.

The estimated fair value of our customer deposit liability, based on discounting expected cash outflows at maturity dates that range up to five years, using current interest rates offered for deposits with the same dates of maturity, was $164.1 million at December 31, 2010, and $176.9 million at December 31, 2011.

NET REVENUE.

Net revenue (in millions) includes the following:


	2009		2010		2011
Investment income from debt securities	$	7.0	$	6.4	$	5.4
Interest expense on customer deposits		4.5		3.5		3.1

Net revenue	$	2.5	$	2.9	$	2.3

OTHER INVESTMENTS.

12 Months Ended

Dec. 31, 2011

Other Investments [Abstract]

Other Investments [Text Block]

NOTE 5 — OTHER INVESTMENTS.

These investments (in millions) at December 31 include:


	2010		2011
Cost method investments
10% interest in Daiwa SB Investments Ltd. (Japan)	$	13.6	$	13.6
Other investments		34.2		39.9
Equity method investments
26% interest in UTI Asset Management Company Limited (India)		154.1		144.8
Other investments		2.0		2.6
Sponsored mutual fund investments held as trading		4.8		4.4
U.S. Treasury Note		1.0		1.0

Total	$	209.7	$	206.3

On January 20, 2010, we completed the purchase of a 26% equity interest in UTI and an affiliate from existing stockholders for 6.5 billion Indian rupees (INR) or $142.4 million, plus transaction costs of $3.2 million of which a portion was paid in 2009. The basis difference between our carrying value and our proportionate share of UTI's book value is primarily related to consideration paid in excess of the stepped-up basis of assets and liabilities on the date of purchase.

At December 31, 2011, we had outstanding commitments to make additional contributions totaling $42.5 million to various investment partnerships in which we have an existing investment.

FAIR VALUE MEASUREMENTS.

12 Months Ended

Dec. 31, 2011

Fair Value Measurements [Abstract]

Fair Value Measurements [Text Block]

NOTE 6 — FAIR VALUE MEASUREMENTS.

We determine the fair value of our investments using the following broad levels of inputs as defined by related accounting standards:

Level 1 — quoted prices in active markets for identical securities.

Level 2 — observable inputs other than Level 1 quoted prices including, but not limited to, quoted prices for similar securities, interest rates, prepayment speeds, and credit risk. These inputs are based on market data obtained from independent sources.

Level 3 — unobservable inputs reflecting our own assumptions based on the best information available. We do not value any of our investments using Level 3 inputs.

These levels are not necessarily an indication of the risk or liquidity associated with our investments. There were no transfers in or out of the levels in 2010 or 2011. The following table summarizes our investments (in millions) that are recognized in our balance sheet at year end using fair value measurements determined based on the differing levels of inputs.


	Level 1		Level 2
2010
Cash equivalents	$	726.9
Investments in sponsored mutual funds
Held as available-for-sale		747.9
Held as trading		4.8
Debt securities held by savings bank subsidiary		—	$	184.7

Total	$	1,479.6	$	184.7


2011
Cash equivalents	$	823.2
Investments in sponsored mutual funds
Held as available-for-sale		764.5
Held as trading		4.4
Debt securities held by savings bank subsidiary		—	$	198.4

Total	$	1,592.1	$	198.4

- Definition

The entire disclosure for the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined), and the measurements of those instruments as well as disclosures related to the fair value of non-financial assets and liabilities. Such disclosures about the financial instruments, assets, and liabilities would include: (1) the fair value of the required items together with their carrying amounts (as appropriate); (2) for items for which it is not practicable to estimate fair value, disclosure would include: (a) information pertinent to estimating fair value (including, carrying amount, effective interest rate, and maturity, and (b) the reasons why it is not practicable to estimate fair value; (3) significant concentrations of credit risk including: (a) information about the activity, region, or economic characteristics identifying a concentration, (b) the maximum amount of loss the entity is exposed to based on the gross fair value of the related item, (c) policy for requiring collateral or other security and information as to accessing such collateral or security, and (d) the nature and brief description of such collateral or security; (4) quantitative information about market risks and how such risks are managed; (5) for items measured on both a recurring and nonrecurring basis information regarding the inputs used to develop the fair value measurement; and (6) for items presented in the financial statement for which fair value measurement is elected: (a) information necessary to understand the reasons for the election, (b) discussion of the effect of fair value changes on earnings, (c) a description of [similar groups] items for which the election is made and the relation thereof to the balance sheet, the aggregate carrying value of items included in the balance sheet that are not eligible for the election; (7) all other required (as defined) and desired information.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 133
-Paragraph 44A, 44B
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 107
-Paragraph 15C, 15D
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 107
-Paragraph 15A
-Subparagraph a-d
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 107
-Paragraph 15B
-Subparagraph a, b
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 107
-Paragraph 3, 10, 14, 15
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 157
-Paragraph 32, 33, 34
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 159
-Paragraph 17-22, 27, 28
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6925170&loc=d3e19207-110258

Reference 9: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-URI http://asc.fasb.org/extlink&oid=6947722&loc=d3e13537-108611

Reference 10: http://www.xbrl.org/2003/role/presentationRef
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Reference 11: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
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Reference 12: http://www.xbrl.org/2003/role/presentationRef
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-Paragraph 30
-URI http://asc.fasb.org/extlink&oid=6957238&loc=d3e14172-108612

Reference 13: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-URI http://asc.fasb.org/extlink&oid=6947722&loc=d3e13504-108611

Reference 14: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=6925170&loc=d3e19296-110258

+ Details

PROPERTY AND EQUIPMENT.

12 Months Ended

Dec. 31, 2011

Property and Equipment [Abstract]

Property and Equipment [Text Block]

NOTE 7 — PROPERTY AND EQUIPMENT.


Property and equipment (in millions) at December 31 consists of:
	2010		2011
Computer and communications software and equipment	$	317.8	$	342.8
Buildings and improvements		394.8		391.5
Leasehold improvements		80.7		95.3
Furniture and other equipment		108.5		114.3
Land		36.3		40.3
Leased land		2.7		2.7

		940.8		986.9
Less accumulated depreciation and amortization		380.5		419.5

Total	$	560.3	$	567.4

Compensation and related costs attributable to the development of computer software for internal use totaling $7.5 million in 2009, $8.1 million in 2010, and $7.5 million in 2011 have been capitalized.

We occupy certain office facilities, and rent computer and other equipment under noncancelable operating leases. Related rental expense was $29.1 million in 2009, $29.6 million in 2010, and $26.5 million in 2011. Future minimum payments under these leases aggregate $31.0 million in 2012, $32.1 million in 2013, $31.3 million in 2014, $29.1 million in 2015, $27.4 million in 2016, and $33.7 million in later years.

- Definition

The entire disclosure for long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale. Examples include land, buildings, machinery and equipment, and other types of furniture and equipment including, but not limited to, office equipment, furniture and fixtures, and computer equipment and software. This disclosure may include property plant and equipment accounting policies and methodology, a schedule of property, plant and equipment gross, additions, deletions, transfers and other changes, depreciation, depletion and amortization expense, net, accumulated depreciation, depletion and amortization expense and useful lives, income statement disclosures, assets held for sale and public utility disclosures.

+ References + Details

INTANGIBLE ASSETS.	12 Months Ended
INTANGIBLE ASSETS.	Dec. 31, 2011
Intangible Assets [Abstract]
Intangible Assets [Text Block]	NOTE 8 — INTANGIBLE ASSETS. Other assets include mutual fund customer-relationship intangible assets acquired in 2006. Our unamortized cost was $1.6 million at December 31, 2010, and $1.1 million at December 31, 2011.

INCOME TAXES.

12 Months Ended

Dec. 31, 2011

Income Taxes [Abstract]

Income Taxes [Text Block]

NOTE 9 — INCOME TAXES.

The provision for income taxes (in millions) consists of:


	2009			2010			2011
Current income taxes
U.S. federal	$	232.5		$	323.4		$	375.8
Foreign		26.5			50.1			29.9
State and local		32.0			47.5			68.8
Deferred income taxes (tax benefits)		(35.7	)		(23.2	)		2.9

Total	$	255.3		$	397.8		$	477.4

Deferred income taxes arise from temporary differences between taxable income for financial statement and income tax return purposes. Deferred tax benefits include $22.4 million in 2009 and $27.6 million in 2010 relating to the recognition of stock-based compensation expense. Deferred tax benefits in 2009 also include $12.4 million attributable to other than temporary impairments recognized on our sponsored mutual fund investments.

Significant temporary differences in 2011 include deferred income taxes of $13.9 million related to property and equipment offset by deferred tax benefits of $15.1 million related to the recognition of stock-based compensation expense.

The following table reconciles the statutory federal income tax rate to the effective income tax rate.


	2009			2010			2011
Statutory U.S. federal income tax rate		35.0	%		35.0	%		35.0	%
State income taxes for current year, net of federal income tax benefits		3.1			3.0			3.5
Other items		(1.0	)		(.8	)		(.3	)

Effective income tax rate		37.1	%		37.2	%		38.2	%

The net deferred tax asset recognized in our balance sheet in other assets includes the following (in millions) at December 31.


	2010			2011
Deferred tax liabilities
Related to property and equipment	$	(17.6	)	$	(31.5	)
Recognized in other comprehensive income on net unrealized holding gains		(85.5	)		(67.1	)
Other		(9.2	)		(11.7	)

		(112.3	)		(110.3	)

Deferred tax assets
Related to stock-based compensation		117.2			131.8
Related to other than temporary impairments of investments in mutual funds		49.2			49.3
Related to accrued compensation		2.2			2.9
Other		4.4			6.9

		173.0			190.9

Net deferred tax asset	$	60.7		$	80.6

A deferred tax liability for unremitted earnings of our foreign subsidiaries has not been recognized, as it is our intention to indefinitely reinvest these earnings outside the U.S. The unremitted earnings of these subsidiaries are estimated to be $143.2 million at December 31, 2011. If these earnings were distributed to the U.S. in the form of dividends or otherwise, or if the entity was sold or otherwise transferred, we would be subject to U.S. income taxes, less any foreign tax credits. Determination of the amount of the unrecognized deferred tax liability related to these earnings is not practicable.

Other assets also include tax refund receivables of $31.9 million at December 31, 2010, and $20.1 million at December 31, 2011.

Cash outflows from operating activities include income taxes paid of $221.6 million in 2009, $383.0 million in 2010, and $430.1 million in 2011.

Additional income tax benefits of $33.1 million in 2009, $51.9 million in 2010, and $36.3 million in 2011 arising from stock-based compensation plans activity reduced the amount of income taxes that would have otherwise been payable.

The following table reconciles our unrecognized tax benefits (in millions) during the year:


	2009			2010			2011
Balance at beginning of year	$	6.3		$	7.0		$	3.8
Changes in tax positions related to
Current year		1.1			.8			.9
Prior years		(.4	)		(4.0	)		.4
Expired statute of limitations		—			—			(.4	)

Balance at year end	$	7.0		$	3.8		$	4.7

If recognized, these tax benefits would affect our effective tax rate; however, we do not expect that unrecognized tax benefits for tax positions taken with respect to 2011 and prior years will significantly change in 2012. Our United States federal tax obligations have been settled through the year 2000. Net interest recoverable recognized in our balance sheets was $5.6 million at December 31, 2010, and $5.9 million at December 31, 2011. Our accounting policy with respect to interest and penalties arising from income tax settlements is to recognize them as part of our provision for income taxes. Interest recognized as part of our provision for income taxes was not material.

- Definition

The entire disclosure for income taxes. Disclosures may include net deferred tax liability or asset recognized in an enterprise's statement of financial position, net change during the year in the total valuation allowance, approximate tax effect of each type of temporary difference and carryforward that gives rise to a significant portion of deferred tax liabilities and deferred tax assets, utilization of a tax carryback, and tax uncertainties information.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 08
-Paragraph h
-Article 4

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 109
-Paragraph 136, 172
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 109
-Paragraph 43, 44, 45, 46, 47, 48, 49
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 15
-URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32718-109319

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32639-109319

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08.(h))
-URI http://asc.fasb.org/extlink&oid=6881521&loc=d3e23780-122690

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32537-109319

Reference 8: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32559-109319

+ Details

STOCK-BASED COMPENSATION.

12 Months Ended

Dec. 31, 2011

Stock-Based Compensation [Abstract]

Stock-Based Compensation [Text Block]

NOTE 10 — STOCK-BASED COMPENSATION.

SHARES AUTHORIZED FOR STOCK-BASED COMPENSATION PROGRAMS.

At December 31, 2011, 52,887,988 shares of unissued common stock were authorized for issuance under our stock-based compensation plans. Additionally, 3,360,000 shares are authorized for issuance under a plan whereby substantially all employees may acquire common stock through payroll deductions at prevailing market prices. We believe that our stock-based compensation programs align the interests of our employees and directors with those of our common stockholders.

STOCK OPTIONS.

The following table summarizes the status of and changes in our stock option grants during 2011.


						Weighted-
						average
				Weighted-		remaining
				average		contractual
				exercise		term in
	Options			price		years
Outstanding at beginning of year		37,759,580		$	41.34
Semiannual grants		5,793,805		$	60.43
Reload grants		80,080		$	58.73
New hire grants		41,519		$	57.74
Non-employee director grants		16,000		$	60.74
Exercised		(3,814,074	)	$	29.11
Forfeited		(499,410	)	$	47.73
Expired		(137,778	)	$	55.69

Outstanding at end of year		39,239,722		$	45.27		6.2

Exercisable at end of year		22,964,004		$	41.01		4.7

Net income includes a charge for stock option-based compensation expense of $72.1 million in 2009, $71.5 million in 2010, and $79.5 million in 2011, including $4.1 million, $3.2 million, and $.5 million, respectively, for reload option grants.

The total intrinsic value of options exercised was $115.7 million in 2009, $189.4 million in 2010, and $123.5 million in 2011. At December 31, 2011, the aggregate intrinsic value of in-the-money options outstanding was $499.4 million including $368.6 million related to options exercisable.

STOCK AWARDS.

The following table summarizes the status of and changes in our nonvested restricted shares and restricted stock units during 2011.


							Weighted-
	Restricted			Restricted			average
	shares			stock units			fair value
Nonvested at beginning of year		638,532			368,201		$	46.92
Granted to employees and directors		274,841			152,450		$	59.75
Vested (value at vest date was $21.9 million)		(246,988	)		(129,105	)	$	48.32
Forfeited		(28,992	)		(40,529	)	$	48.47

Nonvested at end of year		637,393			351,017		$	51.83

We recognized compensation expense for restricted shares and restricted stock units of $17.0 million in 2009, $18.0 million in 2010, and $19.2 million in 2011.

At December 31, 2011, non-employee directors hold 34,917 vested stock units that will convert to common shares upon their separation from the board.

FUTURE STOCK-BASED COMPENSATION EXPENSE.

The following table presents the compensation expense (in millions) to be recognized over the remaining vesting periods of the stock-based awards outstanding at December 31, 2011. Estimated future compensation expense will change to reflect future option grants, including reloads; future awards of unrestricted shares, restricted shares, and restricted stock units; changes in estimated forfeitures; and adjustments for actual forfeitures.


First quarter 2012	$	21.8
Second quarter 2012		21.4
Third quarter 2012		21.0
Fourth quarter 2012		15.3
Total 2012		79.5
2013 through 2016		80.4
Total	$	159.9

- Definition

The entire disclosure for compensation-related costs for equity-based compensation, which may include disclosure of policies, compensation plan details, allocation of equity compensation, incentive distributions, equity-based arrangements to obtain goods and services, deferred compensation arrangements, employee stock ownership plan details and employee stock purchase plan details.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 123R
-Paragraph 64, 65, A240
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher AICPA
-Name Statement of Position (SOP)
-Number 93-6
-Paragraph 53
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Staff Accounting Bulletin (SAB)
-Number Topic 14

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-Name Accounting Standards Codification
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+ Details

EARNINGS PER SHARE CALCULATIONS.

12 Months Ended

Dec. 31, 2011

Earnings Per Share Calculations [Abstract]

Earnings Per Share Calculations [Text Block]

NOTE 11 — EARNINGS PER SHARE CALCULATIONS.

The following table presents the reconciliation (in millions) of our net income to net income allocated to our common stockholders and the weighted average shares (in millions) that are used in calculating the basic and the diluted earnings per share on our common stock. Weighted average common shares outstanding assuming dilution reflects the potential additional dilution, determined using the treasury stock method that could occur if outstanding stock options were exercised.


	2009			2010			2011
Net income	$	433.6		$	672.2		$	773.2
Less: net income allocated to outstanding restricted stock and stock unit holders		(1.5	)		(2.8	)		(3.5	)

Net income allocated to common stockholders	$	432.1		$	669.4		$	769.7


Weighted average common shares
Outstanding		255.9			257.2			255.6

Outstanding assuming dilution		262.3			265.1			263.3

The following table shows the weighted average outstanding stock options (in millions) and their average exercise price that are excluded from the calculation of diluted earnings per common share as the inclusion of such shares would be anti-dilutive.


	2009		2010		2011
Weighted average outstanding stock options excluded		19.9		12.4		7.2

Average exercise price	$	48.20	$	52.07	$	60.03

COMPREHENSIVE INCOME AND ACCUMULATED OTHER COMPREHENSIVE INCOME.

12 Months Ended

Dec. 31, 2011

Comprehensive Income and Accumulated Other Comprehensive Income [Abstract]

Comprehensive Income and Accumulated Other Comprehensive Income [Text Block]

NOTE 12 — COMPREHENSIVE INCOME AND ACCUMULATED OTHER COMPREHENSIVE INCOME.

The following table presents the components (in millions) of comprehensive income.


	2009			2010			2011
Net income	$	433.6		$	672.2		$	773.2

Other comprehensive income (loss), net of tax
Unrealized holding gains (losses)
Investments in sponsored mutual funds:
Net unrealized holding gains (losses)		150.8			67.9			(40.2	)
Capital gain distributions		(2.0	)		(2.6)			(5.3	)
Other than temporary impairments recognized in income		36.1			—			—
Net losses (gains) realized on dispositions, determined using average cost		(7.4	)		(7.6	)		—
Deferred tax benefits (income taxes)		(66.6	)		(24.0	)		18.3

Net unrealized holding gains (losses) of investments in sponsored mutual funds recognized in other comprehensive income		110.9			33.7			(27.2	)

Debt securities held by savings bank subsidiary:
Net unrealized holding gains (losses)		6.0			—			(.2	)
Net losses (gains) realized on dispositions, determined using average cost		.3			—			—
Deferred tax benefits (income taxes)		(2.2	)		(.1	)		.1

Net unrealized holding gains (losses) of debt securities held by savings bank subsidiary recognized in other comprehensive income		4.1			(.1	)		(.1	)

Investment in UTI Asset Management Company Limited
Proportionate share of net unrealized holding gains (losses) of available-for-sale securities held by UTI Asset Management Company Limited, net of deferred taxes		—			—			.2

Total net unrealized holding gains (losses) recognized in other comprehensive income		115.0			33.6			(27.1	)

Currency translation adjustment
Investment in UTI Asset Management Company Limited		—			5.6			(14.2	)
Deferred tax benefits (income taxes)		—			(2.0	)		5.0

Total currency translation adjustment		—			3.6			(9.2	)

Total other comprehensive income (loss)		115.0			37.2			(36.3	)

Total comprehensive income	$	548.6		$	709.4		$	736.9

The currency translation adjustment results from translating our proportionate share of the financial statements of UTI, our equity method investment, into U.S. dollars. Assets and liabilities are translated into U.S. dollars using year-end exchange rates, and revenues and expenses are translated using weighted-average exchange rates for the period.

Accumulated other comprehensive income (in millions) at December 31 includes:


		2010			2011
Net unrealized holding gains on
Investments in sponsored mutual funds	$	217.7		$	172.2
Debt securities held by savings bank subsidiary		3.3			3.1
Proportionate share of investments held by UTI Asset Management Company Limited		—			.4

		221.0			175.7
Deferred income taxes		(85.5	)		(67.3	)

Net unrealized holding gains		135.5			108.4
Currency translation adjustment, net of deferred income taxes (benefits) of $2.0 million in 2010 and ($3.0) million in 2011		3.6			(5.6	)

Total	$	139.1		$	102.8

- Definition

The entire disclosure for comprehensive income. Includes, but is not limited to, the following: 1) the amount of income tax expense or benefit allocated to each component of other comprehensive income, including reclassification adjustments, 2) the reclassification adjustments for each classification of other comprehensive income and 3) the ending accumulated balances for each component of comprehensive income. Components of comprehensive income include: (1) foreign currency translation adjustments; (2) gains (losses) on foreign currency transactions that are designated as, and are effective as, economic hedges of a net investment in a foreign entity; (3) gains (losses) on intercompany foreign currency transactions that are of a long-term-investment nature, when the entities to the transaction are consolidated, combined, or accounted for by the equity method in the reporting enterprise's financial statements; (4) change in the market value of a futures contract that qualifies as a hedge of an asset reported at fair value; (5) unrealized holding gains (losses) on available-for-sale securities and that resulting from transfers of debt securities from the held-to-maturity category to the available-for-sale category; (6) a net loss recognized as an additional pension liability not yet recognized as net periodic pension cost; and (7) the net gain (loss) and net prior service cost or credit for pension plans and other postretirement benefit plans.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 130
-Paragraph 14-26
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef
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Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
-Paragraph 1
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Reference 6: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
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Reference 9: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Reclassification Adjustments
-URI http://asc.fasb.org/extlink&oid=6522872

Reference 10: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
-Topic 220
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-Name Accounting Standards Codification
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+ Details

OTHER DISCLOSURES.	12 Months Ended
OTHER DISCLOSURES.	Dec. 31, 2011
Other Disclosures [Abstract]
Other Disclosures [Text Block]	NOTE 13 — OTHER DISCLOSURES. SHARE REPURCHASES. The Board of Directors has authorized the future repurchase of up to 13,715,681 common shares as of December 31, 2011. DIVIDENDS. Cash dividends declared per share were $1.00 in 2009, $1.08 in 2010, and $1.24 in 2011. RESTRICTED CAPITAL. Our consolidated stockholders' equity at December 31, 2011, includes about $92 million that is restricted as to use by various regulations and agreements arising in the ordinary course of our business. CONTINGENCIES. From time to time, various claims against us arise in the ordinary course of business, including employment-related claims. In the opinion of management, after consultation with counsel, the likelihood that an adverse determination in one or more pending claims would have a material adverse effect on our financial position or results of operations is remote. RETIREMENT PLANS. Compensation expense recognized for our defined contribution retirement plans was $41.2 million in 2009, $48.2 million in 2010, and $54.5 million in 2011.

SUPPLEMENTARY QUARTERLY FINANCIAL DATA (Unaudited).

12 Months Ended

Dec. 31, 2011

Supplementary Quarterly Financial Data [Abstract]

Supplementary Quarterly Financial Data [Text Block]

NOTE 14 — SUPPLEMENTARY QUARTERLY FINANCIAL DATA (Unaudited).


					Basic		Diluted
					earnings		earnings
					per		per
					share on		share on
	Net		Net		common		common
	revenues		income		stock		stock
	(in millions)
2010
1st quarter	$	556.2	$	153.0	$	.59	$	.57
2nd quarter	$	577.4	$	158.5	$	.61	$	.59
3rd quarter	$	586.1	$	169.1	$	.66	$	.64
4th quarter	$	647.5	$	191.6	$	.74	$	.72

2011
1st quarter	$	682.4	$	194.6	$	.75	$	.72
2nd quarter	$	713.7	$	204.7	$	.79	$	.76
3rd quarter	$	679.4	$	185.5	$	.73	$	.71
4th quarter	$	671.6	$	188.4	$	.74	$	.73

The sums of quarterly earnings per share do not equal annual earnings per share because the computations are done independently.

- Definition

The entire disclosure for the quarterly financial data in the annual financial statements. The disclosure may include a tabular presentation of financial information for each fiscal quarter for the current and previous year, including revenues, gross profit, income or loss before extraordinary items and earnings per share data. It also includes an indication if the information in the note is unaudited, comments on the aggregate effect of year-end adjustments, and an explanation of matters or transactions that affect comparability or are pertinent to an understanding of the information furnished.

+ References + Details

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (by policy)

12 Months Ended

Dec. 31, 2011

Summary of Significant Accounting Policies [Abstract]

Nature of Operations [Policy Text Block]

Basis of Preparation - Basis of Accounting [Policy Text Block]

These consolidated financial statements have been prepared by our management in accordance with accounting principles generally accepted in the United States.

Basis of Preparation - Use of Estimates [Policy Text Block]

These principles require that we make certain estimates and assumptions. Actual results may vary from our estimates.

Basis of Preparation - Reclassifications [Policy Text Block]

Basis of Preparation - Consolidation of Subsidiaries [Policy Text Block]

Basis of Preparation - Consolidation of Variable Interest Entities [Policy Text Block]

Cash Equivalents [Policy Text Block]

Cash equivalents consist primarily of short-term, highly liquid investments in our sponsored money market mutual funds. The cost of these funds is equivalent to fair value.

Investments in Sponsored Mutual Funds and Debt Securities Held by Savings Bank Subsidiary [Policy Text Block]

INVESTMENTS IN SPONSORED MUTUAL FUNDS.

DEBT SECURITIES HELD BY SAVINGS BANK SUBSIDIARY.

Other Investments - Trading Securities [Policy Text Block]

We classify some investments in sponsored mutual funds made at fund formation as trading because they are expected to be held for only a short period of time.

Other Investments - Equity Method Investments [Policy Text Block]

Other Investments - Cost Method Investments [Policy Text Block]

Those other investments to which we do not exercise significant influence over the operating and financial policies of the investee are recognized using the cost method of accounting.

Concentrations of Risk [Policy Text Block]

Investments by our savings bank subsidiary in debt securities expose us to market risk, which may arise from changes in credit ratings and interest rates.

Property and Equipment [Policy Text Block]

Goodwill [Policy Text Block]

Revenue Recognition - Investment Advisory, Distribution, and Servicing Fees [Policy Text Block]

Revenue Recognition - Taxes Billed to Clients [Policy Text Block]

Taxes billed to our clients based on our fees for services rendered are not included in revenues.

Advertising [Policy Text Block]

Costs of advertising are expensed the first time that the advertising takes place.

Stock Awards and Options [Policy Text Block]


	Weighted-average
	2009			2010			2011
Grant-date fair value per option awarded, including reload grants	$	10.07		$	14.26		$	17.94

Assumptions used:
Expected life in years		6.7			6.7			6.9
Expected volatility		32	%		32	%		33	%
Dividend yield		2.4	%		2.1	%		1.9	%
Risk-free interest rate		2.5	%		2.7	%		2.2	%

Earnings Per Share [Policy Text Block]

Comprehensive Income [Policy Text Block]

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Tables)

12 Months Ended

Dec. 31, 2011

Summary of Significant Accounting Policies (Tables) [Abstract]

Assumptions used in option pricing model and grant date fair value of options [Table Text Block]


	Weighted-average
	2009			2010			2011
Grant-date fair value per option awarded, including reload grants	$	10.07		$	14.26		$	17.94

Assumptions used:
Expected life in years		6.7			6.7			6.9
Expected volatility		32	%		32	%		33	%
Dividend yield		2.4	%		2.1	%		1.9	%
Risk-free interest rate		2.5	%		2.7	%		2.2	%

INFORMATION ABOUT RECEIVABLES, REVENUES, AND SERVICES. (Tables)

12 Months Ended

Dec. 31, 2011

Information about Receivables, Revenues, and Services [Abstract]

Components of Investment Advisory Fees [Table Text Block]


	2009		2010		2011
Sponsored mutual funds in the U.S.
Stock and blended asset	$	843.7	$	1,116.3	$	1,304.5
Bond and money market		224.6		278.0		303.1

		1,068.3		1,394.3		1,607.6
Other portfolios
Stock and blended asset		391.6		514.4		604.8
Bond, money market, and stable value		86.2		118.1		136.6

		477.8		632.5		741.4

Total	$	1,546.1	$	2,026.8	$	2,349.0

Components of Assets Under Management [Table Text Block]


	Average during						December 31,
	2009		2010		2011		2010		2011
Sponsored mutual funds in the U.S.
Stock and blended asset	$	139.5	$	184.7	$	217.6	$	212.4	$	211.7
Bond and money market		52.3		66.1		74.5		70.2		77.7

		191.8		250.8		292.1		282.6		289.4
Other portfolios
Stock and blended asset		93.3		126.2		149.6		148.2		140.7
Bond, money market, and stable value		36.2		45.6		55.4		51.2		59.4

		129.5		171.8		205.0		199.4		200.1

Total	$	321.3	$	422.6	$	497.1	$	482.0	$	489.5

INVESTMENTS IN SPONSORED MUTUAL FUNDS. (Tables)

12 Months Ended

Dec. 31, 2011

Available for Sale Investments [Abstract]

Investments in Sponsored Mutual Funds Reconciliation [Table Text Block]


	Aggregate		Unrealized holding					Aggregate
	cost		gains		losses			fair value
2010
Stock and blended asset funds	$	281.7	$	178.6	$	—		$	460.3
Bond funds		248.5		39.1		—			287.6

Total	$	530.2	$	217.7	$	—		$	747.9


2011
Stock and blended asset funds	$	281.7	$	137.0	$	(.8	)	$	417.9
Bond funds		310.6		38.5		(2.5	)		346.6

Total	$	592.3	$	175.5	$	(3.3	)	$	764.5

SAVINGS BANK SUBSIDIARY. (Tables)

12 Months Ended

Dec. 31, 2011

Savings Bank Subsidiary [Abstract]

Investments in Debt Securities Held by Savings Bank Subsidiary Reconciliation [Table Text Block]


	2010					2011
			Unrealized					Unrealized
			holding					holding
	Fair		gains			Fair		gains
	value		(losses)			value		(losses)
Investments with temporary impairment (43 securities in 2011) of
Less than 12 months	$	25.0	$	(.4	)	$	22.8	$	(.2	)
12 months or more		6.1		(.4	)		6.3		(.2	)

Total		31.1		(.8	)		29.1		(.4	)
Investments with unrealized holding gains		153.6		4.1			169.3		3.5

Total	$	184.7	$	3.3		$	198.4	$	3.1

Aggregate cost	$	181.4				$	195.3

Net Revenue [Table Text Block]


	2009		2010		2011
Investment income from debt securities	$	7.0	$	6.4	$	5.4
Interest expense on customer deposits		4.5		3.5		3.1

Net revenue	$	2.5	$	2.9	$	2.3

OTHER INVESTMENTS. (Tables)

12 Months Ended

Dec. 31, 2011

Other Investments [Abstract]

Components of Other Investments [Table Text Block]


	2010		2011
Cost method investments
10% interest in Daiwa SB Investments Ltd. (Japan)	$	13.6	$	13.6
Other investments		34.2		39.9
Equity method investments
26% interest in UTI Asset Management Company Limited (India)		154.1		144.8
Other investments		2.0		2.6
Sponsored mutual fund investments held as trading		4.8		4.4
U.S. Treasury Note		1.0		1.0

Total	$	209.7	$	206.3

FAIR VALUE MEASUREMENTS. (Tables)

12 Months Ended

Dec. 31, 2011

Fair Value Measurements (Tables) [Abstract]

Fair Value Measurements Table [Table Text Block]


	Level 1		Level 2
2010
Cash equivalents	$	726.9
Investments in sponsored mutual funds
Held as available-for-sale		747.9
Held as trading		4.8
Debt securities held by savings bank subsidiary		—	$	184.7

Total	$	1,479.6	$	184.7


2011
Cash equivalents	$	823.2
Investments in sponsored mutual funds
Held as available-for-sale		764.5
Held as trading		4.4
Debt securities held by savings bank subsidiary		—	$	198.4

Total	$	1,592.1	$	198.4

- Definition

Tabular disclosure of assets, including [financial] instruments measured at fair value that are classified in stockholders' equity, if any, by class that are measured at fair value on a recurring basis. The disclosures contemplated herein include the fair value measurements at the reporting date by the level within the fair value hierarchy in which the fair value measurements in their entirety fall, segregating fair value measurements using quoted prices in active markets for identical assets (Level 1), significant other observable inputs (Level 2), and significant unobservable inputs (Level 3).

+ References + Details

PROPERTY AND EQUIPMENT. (Tables)

12 Months Ended

Dec. 31, 2011

Property and Equipment [Abstract]

Property and Equipment Table [Table Text Block]


	2010		2011
Computer and communications software and equipment	$	317.8	$	342.8
Buildings and improvements		394.8		391.5
Leasehold improvements		80.7		95.3
Furniture and other equipment		108.5		114.3
Land		36.3		40.3
Leased land		2.7		2.7

		940.8		986.9
Less accumulated depreciation and amortization		380.5		419.5

Total	$	560.3	$	567.4

INCOME TAXES. (Tables)

12 Months Ended

Dec. 31, 2011

Income Taxes [Abstract]

Schedule of Components of Income Tax Provision [Table Text Block]


	2009			2010			2011
Current income taxes
U.S. federal	$	232.5		$	323.4		$	375.8
Foreign		26.5			50.1			29.9
State and local		32.0			47.5			68.8
Deferred income taxes (tax benefits)		(35.7	)		(23.2	)		2.9

Total	$	255.3		$	397.8		$	477.4

Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]


	2009			2010			2011
Statutory U.S. federal income tax rate		35.0	%		35.0	%		35.0	%
State income taxes for current year, net of federal income tax benefits		3.1			3.0			3.5
Other items		(1.0	)		(.8	)		(.3	)

Effective income tax rate		37.1	%		37.2	%		38.2	%

Schedule of Deferred Tax Assets and Liabilities [Table Text Block]


	2010			2011
Deferred tax liabilities
Related to property and equipment	$	(17.6	)	$	(31.5	)
Recognized in other comprehensive income on net unrealized holding gains		(85.5	)		(67.1	)
Other		(9.2	)		(11.7	)

		(112.3	)		(110.3	)

Deferred tax assets
Related to stock-based compensation		117.2			131.8
Related to other than temporary impairments of investments in mutual funds		49.2			49.3
Related to accrued compensation		2.2			2.9
Other		4.4			6.9

		173.0			190.9

Net deferred tax asset	$	60.7		$	80.6

Schedule of Unrecognized Tax Benefits [Table Text Block]


	2009			2010			2011
Balance at beginning of year	$	6.3		$	7.0		$	3.8
Changes in tax positions related to
Current year		1.1			.8			.9
Prior years		(.4	)		(4.0	)		.4
Expired statute of limitations		—			—			(.4	)

Balance at year end	$	7.0		$	3.8		$	4.7

- Definition

Tabular disclosure of tax positions taken in the tax returns filed or to be filed for which it is more likely than not that the tax position will not be sustained upon examination by taxing authorities (i.e., uncertain tax positions) and other types of income tax contingencies, including: (1) the policy on classification of interest and penalties; (2) a tabular reconciliation of the total amounts of unrecognized tax benefits at the beginning and end of the period; the total amount(s) of: (3) unrecognized tax benefits that, if recognized, would affect the effective tax rate, and (4) interest and penalties recognized in each of the income statement and balance sheet; (5) for positions for which it is reasonably possible that the total amounts unrecognized will significantly change within 12 months of the reporting date the: (i) nature of the uncertainty, (ii) nature of the event that could occur that would cause the change, and (iii) an estimate of the range of the reasonably possible change or a statement that an estimate of the range cannot be made; and (6) a description of tax years that remain subject to examination by major tax jurisdictions.

+ References + Details

STOCK-BASED COMPENSATION. (Tables)

12 Months Ended

Dec. 31, 2011

Stock-Based Compensation [Abstract]

Rollforward of Stock Options [Table Text Block]


						Weighted-
						average
				Weighted-		remaining
				average		contractual
				exercise		term in
	Options			price		years
Outstanding at beginning of year		37,759,580		$	41.34
Semiannual grants		5,793,805		$	60.43
Reload grants		80,080		$	58.73
New hire grants		41,519		$	57.74
Non-employee director grants		16,000		$	60.74
Exercised		(3,814,074	)	$	29.11
Forfeited		(499,410	)	$	47.73
Expired		(137,778	)	$	55.69

Outstanding at end of year		39,239,722		$	45.27		6.2

Exercisable at end of year		22,964,004		$	41.01		4.7

Rollforward of Restricted Shares and Restricted Stock Units [Table Text Block]


							Weighted-
	Restricted			Restricted			average
	shares			stock units			fair value
Nonvested at beginning of year		638,532			368,201		$	46.92
Granted to employees and directors		274,841			152,450		$	59.75
Vested (value at vest date was $21.9 million)		(246,988	)		(129,105	)	$	48.32
Forfeited		(28,992	)		(40,529	)	$	48.47

Nonvested at end of year		637,393			351,017		$	51.83

Future Stock-Based Compensation Expense [Table Text Block]


First quarter 2012	$	21.8
Second quarter 2012		21.4
Third quarter 2012		21.0
Fourth quarter 2012		15.3
Total 2012		79.5
2013 through 2016		80.4
Total	$	159.9

EARNINGS PER SHARE CALCULATIONS. (Tables)

12 Months Ended

Dec. 31, 2011

Earnings Per Share Calculations [Abstract]

Earnings Per Share Reconciliation [Table Text Block]


	2009			2010			2011
Net income	$	433.6		$	672.2		$	773.2
Less: net income allocated to outstanding restricted stock and stock unit holders		(1.5	)		(2.8	)		(3.5	)

Net income allocated to common stockholders	$	432.1		$	669.4		$	769.7


Weighted average common shares
Outstanding		255.9			257.2			255.6

Outstanding assuming dilution		262.3			265.1			263.3

Antidilutive Securities [Table Text Block]


	2009		2010		2011
Weighted average outstanding stock options excluded		19.9		12.4		7.2

Average exercise price	$	48.20	$	52.07	$	60.03

COMPREHENSIVE INCOME AND ACCUMULATED OTHER COMPREHENSIVE INCOME. (Tables)

12 Months Ended

Dec. 31, 2011

Comprehensive Income and Accumulated Other Comprehensive Income [Abstract]

Total Comprehensive Income [Table Text Block]


	2009			2010			2011
Net income	$	433.6		$	672.2		$	773.2

Other comprehensive income (loss), net of tax
Unrealized holding gains (losses)
Investments in sponsored mutual funds:
Net unrealized holding gains (losses)		150.8			67.9			(40.2	)
Capital gain distributions		(2.0	)		(2.6)			(5.3	)
Other than temporary impairments recognized in income		36.1			—			—
Net losses (gains) realized on dispositions, determined using average cost		(7.4	)		(7.6	)		—
Deferred tax benefits (income taxes)		(66.6	)		(24.0	)		18.3

Net unrealized holding gains (losses) of investments in sponsored mutual funds recognized in other comprehensive income		110.9			33.7			(27.2	)

Debt securities held by savings bank subsidiary:
Net unrealized holding gains (losses)		6.0			—			(.2	)
Net losses (gains) realized on dispositions, determined using average cost		.3			—			—
Deferred tax benefits (income taxes)		(2.2	)		(.1	)		.1

Net unrealized holding gains (losses) of debt securities held by savings bank subsidiary recognized in other comprehensive income		4.1			(.1	)		(.1	)

Investment in UTI Asset Management Company Limited
Proportionate share of net unrealized holding gains (losses) of available-for-sale securities held by UTI Asset Management Company Limited, net of deferred taxes		—			—			.2

Total net unrealized holding gains (losses) recognized in other comprehensive income		115.0			33.6			(27.1	)

Currency translation adjustment
Investment in UTI Asset Management Company Limited		—			5.6			(14.2	)
Deferred tax benefits (income taxes)		—			(2.0	)		5.0

Total currency translation adjustment		—			3.6			(9.2	)

Total other comprehensive income (loss)		115.0			37.2			(36.3	)

Total comprehensive income	$	548.6		$	709.4		$	736.9

Components of Accumulated Other Comprehensive Income [Table Text Block]


		2010			2011
Net unrealized holding gains on
Investments in sponsored mutual funds	$	217.7		$	172.2
Debt securities held by savings bank subsidiary		3.3			3.1
Proportionate share of investments held by UTI Asset Management Company Limited		—			.4

		221.0			175.7
Deferred income taxes		(85.5	)		(67.3	)

Net unrealized holding gains		135.5			108.4
Currency translation adjustment, net of deferred income taxes (benefits) of $2.0 million in 2010 and ($3.0) million in 2011		3.6			(5.6	)

Total	$	139.1		$	102.8

SUPPLEMENTARY QUARTERLY FINANCIAL DATA (Unaudited). (Tables)

12 Months Ended

Dec. 31, 2011

Supplementary Quarterly Financial Data [Abstract]

Supplementary Quarterly Financial Data [Table Text Block]


					Basic		Diluted
					earnings		earnings
					per		per
					share on		share on
	Net		Net		common		common
	revenues		income		stock		stock
	(in millions)
2010
1st quarter	$	556.2	$	153.0	$	.59	$	.57
2nd quarter	$	577.4	$	158.5	$	.61	$	.59
3rd quarter	$	586.1	$	169.1	$	.66	$	.64
4th quarter	$	647.5	$	191.6	$	.74	$	.72

2011
1st quarter	$	682.4	$	194.6	$	.75	$	.72
2nd quarter	$	713.7	$	204.7	$	.79	$	.76
3rd quarter	$	679.4	$	185.5	$	.73	$	.71
4th quarter	$	671.6	$	188.4	$	.74	$	.73

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (VIE) (Detail) $ in Millions	Dec. 31, 2011 USD ($)
Variable Interest Entity, Not Primary Beneficiary [Member]
Assets of collateralized bond obligation	$ 5.4

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Investments) (Detail)	12 Months Ended
	Dec. 31, 2011
Available for Sale Investments [Abstract]
Duration of mutual fund unrealized losses between quarter ends generally presumed to represent other than temporary impairment	6 months
Minimum period of time between purchase and maturity for debt securities to be measured at fair value under our investment valuation policy	1 year
Maximum period of time between purchase and maturity for debt securities to be measured at amortized cost under our investment valuation policy	1 year

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Concentrations of Risk) (Detail)	12 Months Ended
	Dec. 31, 2011
Concentrations of Risk [Abstract]
Concentration Risk, Credit Risk	<div style="margin-top: 6pt; font-size: 10pt;" align="left">Concentration of credit risk in accounts receivable is believed to be minimal in that our clients generally have substantial assets, including those in the investment portfolios that we manage for them.</div>
Concentration Risk, Market Risk	<div style="margin-top: 6pt; font-size: 10pt;" align="left">Our investments in sponsored mutual funds expose us to market risk in the form of equity price risk; that is, the potential future loss of value that would result from a decline in the fair values of the mutual funds. Each fund and its underlying net assets are also subject to market risk, which may arise from changes in equity prices, credit ratings, foreign currency exchange rates, and interest rates.</div> <div style="margin-top: 6pt; font-size: 10pt;" align="left">Investments by our savings bank subsidiary in debt securities expose us to market risk, which may arise from changes in credit ratings and interest rates.</div>

- Definition

Description of potential risks that the counterparty to a contractual arrangement fails to meet its contractual obligations. At a minimum, the description informs financial statement users of the general nature of the risk.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 107
-Paragraph 15A
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 113
-Paragraph 28
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher AICPA
-Name Statement of Position (SOP)
-Number 01-6
-Paragraph 14
-Subparagraph m
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name FASB Staff Position (FSP)
-Number SOP94-6-1
-Paragraph 7, 11
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 825
-Section 55
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6487554&loc=d3e32600-158583

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 21
-URI http://asc.fasb.org/extlink&oid=6947722&loc=d3e13537-108611

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 20
-URI http://asc.fasb.org/extlink&oid=6947722&loc=d3e13531-108611

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 55
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6875567&loc=d3e14537-108613

Reference 9: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 825
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6480020&loc=d3e61044-112788

Reference 10: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 825
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6480020&loc=d3e61082-112788

Reference 11: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 55
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6875567&loc=d3e14489-108613

+ Details

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Property and Equipment) (Detail)	12 Months Ended
	Dec. 31, 2011 years
Computer and communications software and equipment [Member]
Weighted average estimated useful life	3.4
Buildings and improvements [Member]
Weighted average estimated useful life	32.1
Leasehold improvements [Member]
Weighted average estimated useful life	8.6
Furniture and other equipment [Member]
Weighted average estimated useful life	6.6
Leased land [Member]
Weighted average estimated useful life	99.0

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Goodwill) (Detail)	Dec. 31, 2011 segments
Goodwill [Abstract]
Number of distinct operating segments through which we internally conduct, manage, and report our operations	1
Number of reportable business segments to which goodwill is attributed	1

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Stock Awards and Options) (Detail)	12 Months Ended
	Dec. 31, 2011 years ShareBasedCompensationPlans $ / shares	Dec. 31, 2010 years $ / shares	Dec. 31, 2009 years $ / shares
Weighted-average grant-date fair value per option awarded, including reload grants (in dollars per option) \| $ / shares	$ 17.94	$ 14.26	$ 10.07
Weighted average expected life assumption (in years) \| years	6.9	6.7	6.7
Weighted average expected volatility assumption	33.00%	32.00%	32.00%
Weighted average dividend yield assumption	1.90%	2.10%	2.40%
Weighted average risk-free interest rate assumption	2.20%	2.70%	2.50%
Maximum [Member] \| Stock options [Member]
Contractual term	10 years
Employee Stock-Based Compensation Programs [Member]
Stockholder approved plans for stock options (Share-based compensation plans) \| ShareBasedCompensationPlans	2
Employee Stock-Based Compensation Programs [Member] \| Minimum [Member] \| Restricted stock and restricted stock units [Member]
graded vesting period	4 years
Employee Stock-Based Compensation Programs [Member] \| Minimum [Member] \| Stock options [Member]
graded vesting period	5 years
Employee Stock-Based Compensation Programs [Member] \| Maximum [Member] \| Restricted stock and restricted stock units [Member]
graded vesting period	5 years
Employee Stock-Based Compensation Programs [Member] \| Maximum [Member] \| Stock options [Member]
graded vesting period	6 years
Non-employee director grants [Member] \| Minimum [Member]
graded vesting period	6 months
Non-employee director grants [Member] \| Maximum [Member]
graded vesting period	1 year

CASH EQUIVALENTS. (Detail) - USD ($) $ in Millions	12 Months Ended
CASH EQUIVALENTS. (Detail) - USD ($) $ in Millions	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Cash Equivalents [Abstract]
Cash equivalent investments in our sponsored money market mutual funds	$ 823.2	$ 726.9
Dividends earned on our investments in sponsored money market mutual funds	$ 0.1	$ 0.1	$ 1.6

INFORMATION ABOUT RECEIVABLES, REVENUES, AND SERVICES. (Receivables from Sponsored Mutual Funds) (Detail) - USD ($) $ in Millions	Dec. 31, 2011	Dec. 31, 2010
Accounts receivable and accrued revenue	$ 304.5	$ 307.9
Sponsored mutual funds in the U.S. [Member]
Accounts receivable and accrued revenue	$ 155.9	$ 154.0

INFORMATION ABOUT RECEIVABLES, REVENUES, AND SERVICES. (Revenues and Services) (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Investment advisory fees
Investment advisory fees	$ 2,349.0	$ 2,026.8	$ 1,546.1
Assets under management
Average assets under management	497,100.0	422,600.0	321,300.0
Period end assets under management	$ 489,500.0	482,000.0
Concentration Risk, Percentage	11.00%
Concentration Risk, Benchmark Description	Assets under management at December 31, 2011
Concentration Risk, Additional Characteristic	Investment advisory clients outside the United States
Fees for advisory-related administrative and distribution services provided to our sponsored mutual funds	$ 321.6	266.8	249.9
Sponsored mutual funds in the U.S. [Member]
Investment advisory fees
Investment advisory fees	1,607.6	1,394.3	1,068.3
Assets under management
Average assets under management	292,100.0	250,800.0	191,800.0
Period end assets under management	289,400.0	282,600.0
Sponsored mutual funds in the U.S. [Member] \| Stock and blended asset [Member]
Investment advisory fees
Investment advisory fees	1,304.5	1,116.3	843.7
Assets under management
Average assets under management	217,600.0	184,700.0	139,500.0
Period end assets under management	211,700.0	212,400.0
Sponsored mutual funds in the U.S. [Member] \| Bond and money market [Member]
Investment advisory fees
Investment advisory fees	303.1	278.0	224.6
Assets under management
Average assets under management	74,500.0	66,100.0	52,300.0
Period end assets under management	77,700.0	70,200.0
Other portfolios [Member]
Investment advisory fees
Investment advisory fees	741.4	632.5	477.8
Assets under management
Average assets under management	205,000.0	171,800.0	129,500.0
Period end assets under management	200,100.0	199,400.0
Other portfolios [Member] \| Stock and blended asset [Member]
Investment advisory fees
Investment advisory fees	604.8	514.4	391.6
Assets under management
Average assets under management	149,600.0	126,200.0	93,300.0
Period end assets under management	140,700.0	148,200.0
Other portfolios [Member] \| Bond, money market, and stable value [Member]
Investment advisory fees
Investment advisory fees	136.6	118.1	86.2
Assets under management
Average assets under management	55,400.0	45,600.0	$ 36,200.0
Period end assets under management	$ 59,400.0	$ 51,200.0

INVESTMENTS IN SPONSORED MUTUAL FUNDS. (Detail) $ in Millions	Dec. 31, 2011 USD ($) securities	Dec. 31, 2010 USD ($)
Aggregate cost	$ 592.3	$ 530.2
Aggregate fair value	764.5	747.9
Stock and blended asset funds [Member]
Aggregate cost	281.7	281.7
Aggregate fair value	417.9	460.3
Bond funds [Member]
Aggregate cost	310.6	248.5
Aggregate fair value	346.6	287.6
Investments in sponsored mutual funds [Member]
Unrealized holding gains	175.5	217.7
Unrealized holding losses	$ (3.3)
Investments with temporary impairment (number of securities) \| securities	10
Unrealized holding losses at December 31, 2011, are attributable to ten fund holdings with an aggregate fair value of	$ 86.3
Investments in sponsored mutual funds [Member] \| Stock and blended asset funds [Member]
Unrealized holding gains	137.0	178.6
Unrealized holding losses	(0.8)
Investments in sponsored mutual funds [Member] \| Bond funds [Member]
Unrealized holding gains	38.5	$ 39.1
Unrealized holding losses	$ (2.5)

- Definition

For an unclassified balance sheet, this item represents equity securities categorized neither as held-to-maturity nor trading.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 115
-Paragraph 13
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 115
-Paragraph 19
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 115
-Paragraph 12
-Subparagraph b
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 133
-Paragraph 22
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 115
-Paragraph 16
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Emerging Issues Task Force (EITF)
-Number 86-40
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 115
-Paragraph 3
-Subparagraph c
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 25
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=6379932&loc=d3e22054-111558

Reference 9: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 320
-Section 50
-Paragraph 2
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=6957658&loc=d3e62557-112803

Reference 10: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6871852&loc=d3e26610-111562

+ Details

INVESTMENTS IN SPONSORED MUTUAL FUNDS. (Dividends Earned) (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Dividends Earned [Abstract]
Dividends, excluding capital gain distributions, earned on sponsored mutual fund investments	$ 10.6	$ 10.3	$ 9.8

SAVINGS BANK SUBSIDIARY. (Debt Securities) (Detail) $ in Millions	12 Months Ended
	Dec. 31, 2011 USD ($) securities	Dec. 31, 2010 USD ($)
Investments with temporary impairment (43 securities in 2011) of (fair values)
Total	$ 198.4	$ 184.7
Aggregate cost	$ 195.3	181.4
Debt securities held by savings bank subsidiary [Member]
Investments with temporary impairment (43 securities in 2011) of (fair values)
Investments with temporary impairment (number of securities) \| securities	43
Less than 12 months	$ 22.8	25.0
12 months or more	6.3	6.1
Total	29.1	31.1
Fair value of investments with unrealized holding gains	169.3	153.6
Investments with temporary impairment (43 securities in 2011) of (unrealized holding gains (losses))
Less than 12 months	(0.2)	(0.4)
12 months or more	(0.2)	(0.4)
Unrealized holding losses	(0.4)	(0.8)
Unrealized holding gains	3.5	4.1
Total unrealized holding gains (losses)	$ 3.1	$ 3.3
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Cause	<div style="margin-top: 6pt; font-size: 10pt;" align="left">The unrealized losses in these investments were generally caused by changes in interest rates and market liquidity, and not by changes in credit quality.</div>

SAVINGS BANK SUBSIDIARY. (Customer Deposits) (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010
Estimated fair value of customer deposit liability	$ 176.9	$ 164.1
Estimate of Fair Value, Fair Value Disclosure [Member]
Estimated fair value of customer deposit liability, basis for measurement	<div style="margin-top: 6pt; font-size: 10pt;" align="left">The estimated fair value of our customer deposit liability, based on discounting expected cash outflows at maturity dates that range up to five years, using current interest rates offered for deposits with the same dates of maturity, was $164.1 million at December 31, 2010, and $176.9 million at December 31, 2011.</div>
Maximum [Member]
Maturities of customer deposit liabilities	5 years	5 years

SAVINGS BANK SUBSIDIARY. (Net Revenue) (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Savings Bank Subsidiary, Net Revenue [Abstract]
Investment income from debt securities	$ 5.4	$ 6.4	$ 7.0
Interest expense on customer deposits	3.1	3.5	4.5
Net revenue	$ 2.3	$ 2.9	$ 2.5

- Definition

Interest income on securities classified neither as held-to-maturity nor trading ("available-for-sale securities") includes: (a) interest and dividends earned on all securities and (b) amortization and accretion (as applicable) of discounts and premiums, if any.

+ References + Details

OTHER INVESTMENTS. (Detail) $ in Millions, ₨ in Billions	Dec. 31, 2011 USD ($)	Dec. 31, 2010 USD ($)	Jan. 31, 2010 INR (₨)	Jan. 31, 2010 USD ($)
Sponsored mutual fund investments held as trading	$ 4.4	$ 4.8
U.S. Treasury Note	1.0	1.0
Total	206.3	209.7
Outstanding commitments to make additional contributions to various investment partnerships	42.5
26% Interest in UTI Asset Management Company Limited (India) [Member]
Equity method investments	$ 144.8	$ 154.1
Equity method investment (ownership percentage)	26.00%	26.00%	26.00%	26.00%
26% Interest in UTI Asset Management Company Limited (India) [Member] \| Purchase Price [Member]
Equity Method Investment, Aggregate Cost			₨ 6.5	$ 142.4
26% Interest in UTI Asset Management Company Limited (India) [Member] \| Transaction Costs [Member]
Equity Method Investment, Aggregate Cost				$ 3.2
Other equity method investments [Member]
Equity method investments	$ 2.6	$ 2.0
10% Interest in Daiwa SB Investments Ltd. (Japan) [Member]
Cost method investments	$ 13.6	$ 13.6
Cost method investment (ownership percentage)	10.00%	10.00%
Other cost method investments [Member]
Cost method investments	$ 39.9	$ 34.2

FAIR VALUE MEASUREMENTS. (Detail) - Fair Value, Measurements, Recurring [Member] - USD ($) $ in Millions	Dec. 31, 2011	Dec. 31, 2010
Level 1 [Member]
Cash equivalents	$ 823.2	$ 726.9
Investments held as available-for-sale	764.5	747.9
Investments in sponsored mutual funds held as trading	4.4	4.8
Total	1,592.1	1,479.6
Level 2 [Member]
Investments held as available-for-sale	198.4	184.7
Total	$ 198.4	$ 184.7

- Definition

This element represents the portion of the balance sheet assertion valued at fair value by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. This item represents Available-for-sale Securities which consist of all investments in certain debt and equity securities neither classified as trading or held-to-maturity securities. A debt security represents a creditor relationship with an enterprise. Debt securities include, among other items, US Treasury securities, US government securities, municipal securities, corporate bonds, convertible debt, commercial paper, and all securitized debt instruments. An equity security represents an ownership interest in an enterprise or the right to acquire or dispose of an ownership interest in an enterprise at fixed or determinable prices. Equity securities include, among other things, common stock, certain preferred stock, warrant rights, call options, and put options, but do not include convertible debt. An entity may opt to provide the reader with additional narrative text to better understand the nature of investments in debt and equity securities which are categorized as Available-for-sale.

+ References + Details

- Definition

This element represents the portion of the balance sheet assertion valued at fair value by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. This item includes currency on hand as well as demand deposits with banks or financial institutions. It also includes other kinds of accounts that have the general characteristics of demand deposits in that the Company may deposit additional funds at any time and also effectively may withdraw funds at any time without prior notice or penalty. Cash equivalents, excluding items classified as marketable securities, include short-term, highly liquid investments that are both readily convertible to known amounts of cash, and so near their maturity that they present minimal risk of changes in value because of changes in interest rates. Generally, only investments with original maturities of three months or less qualify under that definition. Original maturity means original maturity to the entity holding the investment. For example, both a three-month US Treasury bill and a three-year Treasury note purchased three months from maturity qualify as cash equivalents. However, a Treasury note purchased three years ago does not become a cash equivalent when its remaining maturity is three months.

+ References + Details

- Definition

This element represents the portion of the balance sheet assertion valued at fair value by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. This item represents Trading Securities which consist of all investments in certain debt and equity securities that are bought and held principally for the purpose of selling them in the near term (thus held for only a short period of time) or for which an entity has elected the fair value option. Trading generally reflects active and frequent buying and selling, and trading securities are generally used with the objective of generating profits on short-term differences in price, but this category of investments may also include items which are not intended to be sold in the near term or for which the fair value option has been elected.

+ References + Details

PROPERTY AND EQUIPMENT. (Owned) (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Property and equipment consists of:
Property and equipment, gross	$ 986.9	$ 940.8
Less accumulated depreciation and amortization	419.5	380.5
Total	567.4	560.3
Computer and communications software and equipment [Member]
Property and equipment consists of:
Property and equipment, gross	342.8	317.8
Buildings and improvements [Member]
Property and equipment consists of:
Property and equipment, gross	391.5	394.8
Leasehold improvements [Member]
Property and equipment consists of:
Property and equipment, gross	95.3	80.7
Furniture and other equipment [Member]
Property and equipment consists of:
Property and equipment, gross	114.3	108.5
Land [Member]
Property and equipment consists of:
Property and equipment, gross	40.3	36.3
Leased land [Member]
Property and equipment consists of:
Property and equipment, gross	2.7	2.7
Compensation and related costs attributable to the development of computer software for internal use [Member]
Property and equipment consists of:
Property and equipment, additions	$ 7.5	$ 8.1	$ 7.5

PROPERTY AND EQUIPMENT. (Leased) (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Leases [Abstract]
Rental expense	$ 26.5	$ 29.6	$ 29.1
Future Minimum Operating Lease Payments Due
Future minimum operating lease payments, due in 2012	31.0
Future minimum operating lease payments, due in 2013	32.1
Future minimum operating lease payments, due in 2014	31.3
Future minimum operating lease payments, due in 2015	29.1
Future minimum operating lease payments, due in 2016	27.4
Future minimum operating lease payments, due in later years	$ 33.7

INTANGIBLE ASSETS. (Detail) - USD ($) $ in Millions	Dec. 31, 2011	Dec. 31, 2010
Intangible Assets (Detail) [Abstract]
Mutual fund customer-relationship intangible assets	$ 1.1	$ 1.6

INCOME TAXES. (Provision and Effective Tax Rate Reconciliation) (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Current income taxes
U.S. federal	$ 375.8	$ 323.4	$ 232.5
Foreign	29.9	50.1	26.5
State and local	68.8	47.5	32.0
Deferred income taxes (tax benefits)	2.9	(23.2)	(35.7)
Total	$ 477.4	$ 397.8	$ 255.3
Statutory U.S. federal income tax rate (percentage)	35.00%	35.00%	35.00%
State income taxes for current year, net of federal income tax benefits (percentage)	3.50%	3.00%	3.10%
Other items (percentage)	(0.30%)	(0.80%)	(1.00%)
Effective income tax rate (percentage)	38.20%	37.20%	37.10%
Relating to the recognition of stock-based compensation expense [Member]
Current income taxes
Deferred income taxes (tax benefits)	$ (15.1)	$ (27.6)	$ (22.4)
Attributable to other than temporary impairments recognized on our sponsored mutual fund investments [Member]
Current income taxes
Deferred income taxes (tax benefits)			$ (12.4)
Relating to property and equipment [Member]
Current income taxes
Deferred income taxes (tax benefits)	$ 13.9

INCOME TAXES. (Net Deferred Tax Asset and Other Tax Disclosures) (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Deferred tax liabilities
Related to property and equipment	$ (31.5)	$ (17.6)
Recognized in other comprehensive income on net unrealized holding gains	(67.1)	(85.5)
Other	(11.7)	(9.2)
Total deferred tax liabilities	(110.3)	(112.3)
Deferred tax assets
Related to stock-based compensation	131.8	117.2
Related to other than temporary impairments of investments in mutual funds	49.3	49.2
Related to accrued compensation	2.9	2.2
Other	6.9	4.4
Total deferred tax assets	190.9	173.0
Net deferred tax asset	$ 80.6	60.7
Deferred Tax Liability Not Recognized, Description of Temporary Difference	A deferred tax liability for unremitted earnings of our foreign subsidiaries has not been recognized, as it is our intention to indefinitely reinvest these earnings outside the U.S.
Estimated unremitted earnings of foreign subsidiaries, for which a deferred tax liability has not been recognized	$ 143.2
Deferred Tax Liability Not Recognized, Events that Would Cause Temporary Difference to be Taxable	If these earnings were distributed to the U.S. in the form of dividends or otherwise, or if the entity was sold or otherwise transferred, we would be subject to U.S. income taxes, less any foreign tax credits.
Deferred Tax Liability Not Recognized, Determination of Deferred Tax Liability is Not Practicable	Determination of the amount of the unrecognized deferred tax liability related to these earnings is not practicable.
Tax refund receivables included in other assets	$ 20.1	31.9
Income taxes paid included in cash outflows from operating activities	430.1	383.0	$ 221.6
Additional income tax benefits from stock-based compensation plans activity that reduced the amount of income taxes that would have otherwise been payable	$ 36.3	$ 51.9	$ 33.1

INCOME TAXES. (Unrecognized Tax Benefits) (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Reconciliation of unrecognized tax benefits
Balance at beginning of year	$ 3.8	$ 7.0	$ 6.3
Changes in tax positions related to current year	0.9	0.8	1.1
Changes in tax positions related to prior years	0.4	(4.0)	(0.4)
Changes in tax positions related to expired statute of limitations	(0.4)
Balance at year end	4.7	3.8	$ 7.0
Net interest recoverable	$ 5.9	$ 5.6
Internal Revenue Service IRS [Member]
Reconciliation of unrecognized tax benefits
Open Tax Years by Major Tax Jurisdiction	Our United States federal tax obligations have been settled through the year 2000.

STOCK-BASED COMPENSATION. (Detail) $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2011 USD ($) years $ / shares shares	Dec. 31, 2010 USD ($) $ / shares shares	Dec. 31, 2009 USD ($)
Stock option rollforward elements
Outstanding at beginning of year	37,759,580
Exercised	(3,814,074)
Forfeited	(499,410)
Expired	(137,778)
Outstanding at end of year	39,239,722	37,759,580
Exercisable at end of year	22,964,004
Weighted-average exercise price of options outstanding at beginning of year (in dollars per option) \| $ / shares	$ 41.34
Weighted-average exercise price of options exercised (in dollars per option) \| $ / shares	29.11
Weighted-average exercise price of options forfeited (in dollars per option) \| $ / shares	47.73
Weighted-average exercise price of options expired (in dollars per option) \| $ / shares	55.69
Weighted-average exercise price of options outstanding at end of year (in dollars per option) \| $ / shares	45.27	$ 41.34
Weighted-average exercise price of options exercisable at end of year (in dollars per option) \| $ / shares	$ 41.01
Weighted average remaining contractual term of options outstanding at end of year (in years) \| years	6.2
Weighted average remaining contractual term of options exercisable at end of year (in years) \| years	4.7
Stock-based compensation expense (dollars) \| $	$ 98.7	$ 89.5	$ 89.1
Total intrinsic value of options exercised (dollars) \| $	123.5	$ 189.4	115.7
Aggregate intrinsic value of in-the-money options outstanding (dollars) \| $	499.4
Aggregate intrinsic value of options exercisable (dollars) \| $	368.6
Nonvested restricted shares and restricted stock units rollforward
Value at vest date was (dollars) \| $	$ 21.9
Weighted-average fair value of nonvested restricted shares and restricted stock units at beginning of year (in dollars per share) \| $ / shares	$ 46.92
Weighted-average fair value of restricted shares and restricted stock units granted to employees and directors (in dollars per share) \| $ / shares	59.75
Weighted-average fair value of restricted shares and restricted stock units vested (in dollars per share) \| $ / shares	48.32
Weighted-average fair value of restricted shares and restricted stock units forfeited (in dollars per share) \| $ / shares	48.47
Weighted-average fair value of nonvested restricted shares and restricted stock units at end of year (in dollars per share) \| $ / shares	$ 51.83	$ 46.92
Vested stock units held by non-employee directors	34,917
Future stock-based compensation expense
First quarter 2012 (dollars) \| $	$ 21.8
Second quarter 2012 (dollars) \| $	21.4
Third quarter 2012 (dollars) \| $	21.0
Fourth quarter 2012 (dollars) \| $	15.3
Total 2012 (dollars) \| $	79.5
2013 through 2016 (dollars) \| $	80.4
Total (dollars) \| $	159.9
Stock options [Member]
Stock option rollforward elements
Stock-based compensation expense (dollars) \| $	$ 79.5	$ 71.5	72.1
Restricted shares [Member]
Nonvested restricted shares and restricted stock units rollforward
Nonvested at beginning of year	638,532
Granted to employees and directors	274,841
Vested (value at vest date was $21.9 million)	(246,988)
Forfeited	(28,992)
Nonvested at end of year	637,393	638,532
Restricted stock units [Member]
Nonvested restricted shares and restricted stock units rollforward
Nonvested at beginning of year	368,201
Granted to employees and directors	152,450
Vested (value at vest date was $21.9 million)	(129,105)
Forfeited	(40,529)
Nonvested at end of year	351,017	368,201
Restricted stock and restricted stock units [Member]
Stock option rollforward elements
Stock-based compensation expense (dollars) \| $	$ 19.2	$ 18.0	17.0
Stock-based compensation plan [Member]
Unissued common shares authorized for insuance under our stock-based compensation plans	52,887,988
Employee stock purchase plan [Member]
Unissued common shares authorized for issuance under our employee stock purchase plan	3,360,000
Semiannual [Member]
Stock option rollforward elements
Grants	5,793,805
Weighted-average exercise price of option grants (in dollars per option) \| $ / shares	$ 60.43
Reload [Member]
Stock option rollforward elements
Grants	80,080
Weighted-average exercise price of option grants (in dollars per option) \| $ / shares	$ 58.73
Reload [Member] \| Stock options [Member]
Stock option rollforward elements
Stock-based compensation expense (dollars) \| $	$ 0.5	$ 3.2	$ 4.1
New hire [Member]
Stock option rollforward elements
Grants	41,519
Weighted-average exercise price of option grants (in dollars per option) \| $ / shares	$ 57.74
Non-employee director [Member]
Stock option rollforward elements
Grants	16,000
Weighted-average exercise price of option grants (in dollars per option) \| $ / shares	$ 60.74

EARNINGS PER SHARE CALCULATIONS. (Detail) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2011	Sep. 30, 2011	Jun. 30, 2011	Mar. 31, 2011	Dec. 31, 2010	Sep. 30, 2010	Jun. 30, 2010	Mar. 31, 2010	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Earnings Per Share Calculations [Abstract]
Net income	$ 188.4	$ 185.5	$ 204.7	$ 194.6	$ 191.6	$ 169.1	$ 158.5	$ 153.0	$ 773.2	$ 672.2	$ 433.6
Less: net income allocated to outstanding restricted stock and stock unit holders									(3.5)	(2.8)	(1.5)
Net income allocated to common stockholders (basic)									769.7	669.4	432.1
Net income allocated to common stockholders (diluted)									$ 769.7	$ 669.4	$ 432.1
Weighted average common shares
Outstanding (shares)									255.6	257.2	255.9
Outstanding assuming dilution (shares)									263.3	265.1	262.3
Weighted average outstanding stock options excluded (options)									7.2	12.4	19.9
Average exercise price (in dollars per option)									$ 60.03	$ 52.07	$ 48.20

COMPREHENSIVE INCOME AND ACCUMULATED OTHER COMPREHENSIVE INCOME. (Comprehensive Income) (Detail) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2011	Sep. 30, 2011	Jun. 30, 2011	Mar. 31, 2011	Dec. 31, 2010	Sep. 30, 2010	Jun. 30, 2010	Mar. 31, 2010	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Net income	$ 188.4	$ 185.5	$ 204.7	$ 194.6	$ 191.6	$ 169.1	$ 158.5	$ 153.0	$ 773.2	$ 672.2	$ 433.6
Unrealized holding gains (losses)
Net unrealized holding gains (losses) recognized in other comprehensive income									(27.1)	33.6	115.0
Currency translation adjustment
Investment in UTI Asset Management Company Limited									(14.2)	5.6
Deferred tax benefits (income taxes)									5.0	(2.0)
Total currency translation adjustment									(9.2)	3.6
Total other comprehensive income (loss)									(36.3)	37.2	115.0
Total comprehensive income									$ 736.9	709.4	548.6
Foreign Currency Translation Adjustment, Description									<div style="margin-top: 6pt; font-size: 10pt;" align="left">The currency translation adjustment results from translating our proportionate share of the financial statements of UTI, our equity method investment, into U.S. dollars. Assets and liabilities are translated into U.S. dollars using year-end exchange rates, and revenues and expenses are translated using weighted-average exchange rates for the period.</div>
Investments in sponsored mutual funds [Member]
Unrealized holding gains (losses)
Net unrealized holding gains (losses)									$ (40.2)	67.9	150.8
Capital gain distributions									(5.3)	(2.6)	(2.0)
Other than temporary impairments recognized in income											36.1
Net losses (gains) realized on dispositions, determined using average cost										(7.6)	(7.4)
Deferred tax benefits (income taxes)									18.3	(24.0)	(66.6)
Net unrealized holding gains (losses) recognized in other comprehensive income									(27.2)	33.7	110.9
Debt securities held by savings bank subsidiary [Member]
Unrealized holding gains (losses)
Net unrealized holding gains (losses)									(0.2)		6.0
Net losses (gains) realized on dispositions, determined using average cost											0.3
Deferred tax benefits (income taxes)									0.1	(0.1)	(2.2)
Net unrealized holding gains (losses) recognized in other comprehensive income									(0.1)	$ (0.1)	$ 4.1
Proportionate share of investments held by UTI Asset Management Company Limited [Member]
Unrealized holding gains (losses)
Net unrealized holding gains (losses) recognized in other comprehensive income									$ 0.2

COMPREHENSIVE INCOME AND ACCUMULATED OTHER COMPREHENSIVE INCOME. (Accumulated Other Comprehensive Income) (Detail) - USD ($) $ in Millions	Dec. 31, 2011	Dec. 31, 2010
Net unrealized holding gains	$ 175.7	$ 221.0
Deferred income taxes	(67.3)	(85.5)
Net unrealized holding gains	108.4	135.5
Currency translation adjustment	(5.6)	3.6
Net of deferred income taxes (benefits) of	(3.0)	2.0
Total	102.8	139.1
Investments in sponsored mutual funds [Member]
Net unrealized holding gains	172.2	217.7
Debt securities held by savings bank subsidiary [Member]
Net unrealized holding gains	3.1	$ 3.3
Proportionate share of investments held by UTI Asset Management Company Limited [Member]
Net unrealized holding gains	$ 0.4

- Definition

Accumulated adjustment, net of tax, that results from the process of translating subsidiary financial statements and foreign equity investments into the reporting currency from the functional currency of the reporting entity, net of reclassification of realized foreign currency translation gains or losses.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher AICPA
-Name Accounting Principles Board Opinion (APB)
-Number 12
-Paragraph 10
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 130
-Paragraph 17, 18, 19, 22, 23, 24, 25, 26
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 133
-Paragraph 45
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 52
-Paragraph 12, 13
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 52
-Paragraph 31
-Subparagraph a
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 45
-Paragraph 11
-URI http://asc.fasb.org/extlink&oid=6920043&loc=d3e637-108580

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 830
-SubTopic 30
-Section 45
-Paragraph 12
-URI http://asc.fasb.org/extlink&oid=6915805&loc=d3e32022-110900

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 830
-SubTopic 30
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6450520&loc=d3e32583-110901

Reference 9: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 45
-Paragraph 14
-URI http://asc.fasb.org/extlink&oid=6920043&loc=d3e681-108580

Reference 10: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 45
-Paragraph 13
-URI http://asc.fasb.org/extlink&oid=6920043&loc=d3e653-108580

+ Details

- Definition

Accumulated change in equity from transactions and other events and circumstances from non-owner sources, net of tax effect, at period end. Excludes Net Income (Loss), and accumulated changes in equity from transactions resulting from investments by owners and distributions to owners. Includes foreign currency translation items, certain pension adjustments, unrealized gains and losses on certain investments in debt and equity securities, other than temporary impairment (OTTI) losses related to factors other than credit losses on available-for-sale and held-to-maturity debt securities that an entity does not intend to sell and it is not more likely than not that the entity will be required to sell before recovery of the amortized cost basis, as well as changes in the fair value of derivatives related to the effective portion of a designated cash flow hedge.

+ References

+ Details

OTHER DISCLOSURES. (Detail) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Other Disclosures [Abstract]
Repurchase authorization	The Board of Directors has authorized the future repurchase of up to 13,715,681 common shares as of December 31, 2011.
Shares authorized for future repurchase (shares)	13,715,681
Cash dividends declared per share (in dollars per share)	$ 1.24	$ 1.08	$ 1
Amount of restricted stockholders' equity	$ 92.0
Compensation expense for defined contribution retirement plans	$ 54.5	$ 48.2	$ 41.2

SUPPLEMENTARY QUARTERLY FINANCIAL DATA. (Unaudited) (Detail) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2011	Sep. 30, 2011	Jun. 30, 2011	Mar. 31, 2011	Dec. 31, 2010	Sep. 30, 2010	Jun. 30, 2010	Mar. 31, 2010	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Supplementary Quarterly Financial Data (Detail) [Abstract]
Net revenues	$ 671.6	$ 679.4	$ 713.7	$ 682.4	$ 647.5	$ 586.1	$ 577.4	$ 556.2	$ 2,747.1	$ 2,367.2	$ 1,867.4
Net income	$ 188.4	$ 185.5	$ 204.7	$ 194.6	$ 191.6	$ 169.1	$ 158.5	$ 153.0	$ 773.2	$ 672.2	$ 433.6
Basic earnings per share on common stock (in dollars per share)	$ 0.74	$ 0.73	$ 0.79	$ 0.75	$ 0.74	$ 0.66	$ 0.61	$ 0.59	$ 3.01	$ 2.60	$ 1.69
Diluted earnings per share on common stock (in dollars per share)	$ 0.73	$ 0.71	$ 0.76	$ 0.72	$ 0.72	$ 0.64	$ 0.59	$ 0.57	$ 2.92	$ 2.53	$ 1.65

- Definition

The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
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Reference 2: http://www.xbrl.org/2003/role/presentationRef
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+ Details

- Definition

The amount of net income (loss) for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period.

+ References + Details

- Definition

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Reference 2: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Research Bulletin (ARB)
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Reference 3: http://www.xbrl.org/2003/role/presentationRef
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Reference 4: http://www.xbrl.org/2003/role/presentationRef
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Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
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Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
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-Number 210
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Reference 7: http://www.xbrl.org/2003/role/presentationRef
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Reference 8: http://www.xbrl.org/2003/role/presentationRef
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Reference 9: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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Reference 10: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
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Reference 14: http://www.xbrl.org/2003/role/presentationRef
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Reference 15: http://www.xbrl.org/2003/role/presentationRef
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Reference 16: http://www.xbrl.org/2003/role/presentationRef
-Publisher AICPA
-Name Accounting Research Bulletin (ARB)
-Number 51
-Paragraph A7
-Appendix A

+ Details