Janus Capital (JNS) 10-Q 24 Oct 13 2013 Q3 Quarterly report Financial data

Document_and_Entity_Informatio

Document and Entity Information	9 Months Ended
	Sep. 30, 2013	Oct. 18, 2013
Document and Entity Information
Entity Registrant Name	JANUS CAPITAL GROUP INC
Entity Central Index Key	1065865
Document Type	10-Q
Document Period End Date	30-Sep-13
Amendment Flag	FALSE
Current Fiscal Year End Date	-19
Entity Current Reporting Status	Yes
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		189,111,260
Document Fiscal Year Focus	2013
Document Fiscal Period Focus	Q3

CONDENSED_CONSOLIDATED_BALANCE

CONDENSED CONSOLIDATED BALANCE SHEETS (USD $)	Sep. 30, 2013	Dec. 31, 2012
In Millions, unless otherwise specified
Current assets:
Cash and cash equivalents	$358.20	$387
Investment securities	434.4	350.5
Accounts receivable	98.1	100.2
Income taxes receivable	10.2	3.5
Other current assets	35.3	47.2
Total current assets	936.2	888.4
Other assets:
Property and equipment, net	29.8	33.3
Intangible assets, net	1,233.10	1,242.30
Goodwill	488.2	488.2
Other assets	6.6	8.2
Total assets	2,693.90	2,660.40
Current liabilities:
Accounts payable	4.2	3.7
Accrued compensation and benefits	80	91.2
Current portion of long-term debt	95.9
Other accrued liabilities	55.8	64.6
Total current liabilities	235.9	159.5
Other liabilities:
Long-term debt	447.1	545.1
Deferred income taxes	439.3	436
Other liabilities	50.6	41.8
Total liabilities	1,172.90	1,182.40
Commitments and contingencies
Redeemable noncontrolling interests	7.1	42.9
Equity:
Preferred stock ($1.00 par, 10,000,000 shares authorized, none issued)
Common stock ($0.01 par, 1,000,000,000 shares authorized; 265,500,708 and 265,500,708 shares issued, respectively; 189,347,010 and 187,522,000 shares outstanding, respectively)	1.9	1.9
Retained earnings	1,475.10	1,415.40
Accumulated other comprehensive (loss) income, net of tax	-1.2	0.6
Total JCG stockholders' equity	1,475.80	1,417.90
Noncontrolling interests	38.1	17.2
Total equity	1,513.90	1,435.10
Total liabilities and equity	$2,693.90	$2,660.40

CONDENSED_CONSOLIDATED_BALANCE1

CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $)	Sep. 30, 2013	Dec. 31, 2012
CONDENSED CONSOLIDATED BALANCE SHEETS
Preferred stock, par (in dollars per share)	$1	$1
Preferred stock, shares authorized	10,000,000	10,000,000
Preferred stock, shares issued	0	0
Common stock, par (in dollars per share)	$0.01	$0.01
Common stock, shares authorized	1,000,000,000	1,000,000,000
Common stock, shares issued	265,500,708	265,500,708
Common stock, shares outstanding	189,347,010	187,522,000

CONDENSED_CONSOLIDATED_STATEME

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (USD $)	3 Months Ended		9 Months Ended
In Millions, except Per Share data, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Revenues:
Investment management fees	$204	$194.10	$605	$588.50
Performance fees	-22	-20.9	-63.7	-61.8
Shareowner servicing fees and other	35.7	35.8	106.4	106.7
Total	217.7	209	647.7	633.4
Operating expenses:
Employee compensation and benefits	73.3	70.8	222	209.4
Long-term incentive compensation	15.8	16.2	45.3	51
Marketing and advertising	4.6	5.4	14.3	16.3
Distribution	30.8	32.3	94	96
Depreciation and amortization	7.1	9.9	21.9	26
General, administrative and occupancy	27.1	26.5	78.1	78.2
Total	158.7	161.1	475.6	476.9
Operating income	59	47.9	172.1	156.5
Interest expense	-9.5	-11.1	-31.7	-33.9
Investment gains, net	7.9	7.6	6.4	6.9
Other income, net	0.8	0.3	1.8	2.2
Loss on early extinguishment of debt	-0.9		-13.5	-7.2
Income before taxes	57.3	44.7	135.1	124.5
Income tax provision	-21.7	-17	-53	-45.4
Net income	35.6	27.7	82.1	79.1
Noncontrolling interests	-3	-2.6	-5.7	-8
Net income attributable to JCG	32.6	25.1	76.4	71.1
Earnings per share attributable to JCG common shareholders:
Basic (in dollars per share)	$0.18	$0.14	$0.41	$0.39
Diluted (in dollars per share)	$0.17	$0.14	$0.41	$0.38
Other comprehensive income (loss), net of tax:
Net unrealized gain on available-for-sale securities	0.7	0.1	0.6	0.6
Foreign currency items		0.3		0.1
Reclassifications for items included in net income	-0.7	0.2	-2.4	-0.1
Other comprehensive income (loss), net of tax		0.6	-1.8	0.6
Comprehensive income	35.6	28.3	80.3	79.7
Comprehensive income attributable to noncontrolling interests	-3	-2.6	-5.7	-8
Comprehensive income attributable to JCG	$32.60	$25.70	$74.60	$71.70

CONDENSED_CONSOLIDATED_STATEME1

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $)	9 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012
Operating activities:
Net income	$82.10	$79.10
Adjustments to net income:
Depreciation and amortization	21.9	26
Deferred income taxes	13.5	12.1
Amortization of stock-based compensation	18.5	22.5
Investment gains, net	-6.4	-6.9
Amortization of debt discount and deferred issuance costs	7.9	8.4
Loss on early extinguishment of debt	13.5	7.2
Payment of deferred commissions, net	-3.3	-3.9
Other, net	-1	0.3
Changes in working capital items:
Accounts receivable	2.6	5.2
Other current assets	-6.6	6.8
Accounts payable and accrued compensation payable	-5.1	-8.7
Other liabilities	-5.6	-6.6
Net operating activities	132	141.5
Investing activities:
Purchase of property and equipment	-5	-4.4
Purchase of investment securities	-167.8	-96.4
Proceeds from sales and maturities of investment securities	112.2	69.5
Net investing activities	-60.6	-31.3
Financing activities:
Proceeds from issuance of stock warrants	10.5
Purchase of convertible note hedge	-16.1
Debt issuance costs	-3.3
Repayment of long-term debt	-8.9	-65.8
Purchase of noncontrolling interests	-34.1	-6.5
Proceeds from stock plans	7.1	5.3
Proceeds from stock option issuance		4.9
Excess tax benefit from equity-based compensation	1.6	1.3
Repurchase of common stock	-22.2	-14.9
Distributions to noncontrolling interests	-5.9	-9.1
Principal payments under capital lease obligations	-0.8	-0.8
Dividends paid to shareholders	-26.5	-31.9
Net financing activities	-98.6	-117.5
Cash and cash equivalents:
Effect of exchange rate changes	-1.6
Net change	-28.8	-7.3
At beginning of period	387	360
At end of period	358.2	352.7
Supplemental cash flow information:
Cash paid for interest	18.4	19.9
Cash paid for income taxes	$46.20	$27.30

CONDENSED_CONSOLIDATED_STATEME2

CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY (USD $)	Total	Common stock	Retained earnings	Accumulated other comprehensive income (loss)	Nonredeemable noncontrolling interests
In Millions, except Share data, unless otherwise specified
Balance at Dec. 31, 2011	$1,349.10	$1.90	$1,311.80	($0.50)	$35.90
Balance (in shares) at Dec. 31, 2011		187,000,000
Increase (Decrease) in Stockholders' Equity
Net income	72.5		71.1		1.4
Other comprehensive (income) loss	0.6			0.6
Amortization of stock-based compensation	24		20.5		3.5
Issuance and forfeitures of restricted stock awards, net (in shares)		1,300,000
Stock option exercises and employee stock purchases	5.3		5.3
Stock option exercises and employee stock purchases (in shares)		900,000
Stock option issuance	4.9		4.9
Change in noncontrolling interests in consolidated investment products	-16.5				-16.5
Distributions to noncontrolling interests	-1.8				-1.8
Change in fair value of redeemable noncontrolling interests	22.1		22.1
Vesting of noncontrolling interests	-1.2				-1.2
Purchase of noncontrolling interests	-0.6				-0.6
Common stock repurchases	-14.9		-14.9
Common stock repurchases (in shares)		-1,800,000
Common stock dividends	-31.9		-31.9
Balance at Sep. 30, 2012	1,411.60	1.9	1,388.90	0.1	20.7
Balance (in shares) at Sep. 30, 2012		187,400,000
Balance at Dec. 31, 2012	1,435.10	1.9	1,415.40	0.6	17.2
Balance (in shares) at Dec. 31, 2012	187,522,000	187,500,000
Increase (Decrease) in Stockholders' Equity
Net income	77.2		76.4		0.8
Other comprehensive (income) loss	-1.8			-1.8
Amortization of stock-based compensation	17.8		16.1		1.7
Issuance and forfeitures of restricted stock awards, net (in shares)		3,000,000
Stock option exercises and employee stock purchases	7.1		7.1
Stock option exercises and employee stock purchases (in shares)		1,300,000
Convertible senior notes issuance	14.7		14.7
Extinguishment of convertible senior notes	-2		-2
Convertible note hedge issuance	-16.1		-16.1
Stock warrants issuance	10.5		10.5
Change in noncontrolling interests in consolidated investment products	21.5				21.5
Distributions to noncontrolling interests	-1.6				-1.6
Change in fair value of redeemable noncontrolling interests	1.7		1.7
Vesting of noncontrolling interests	-1.2				-1.2
Purchase of noncontrolling interests	-0.3				-0.3
Common stock repurchases	-22.2		-22.2
Common stock repurchases (in shares)		-2,500,000
Common stock dividends	-26.5		-26.5
Balance at Sep. 30, 2013	$1,513.90	$1.90	$1,475.10	($1.20)	$38.10
Balance (in shares) at Sep. 30, 2013	189,347,010	189,300,000

Basis_of_Presentation

Basis of Presentation	9 Months Ended
	Sep. 30, 2013
Basis of Presentation
Basis of Presentation	Note 1 — Basis of Presentation
	In the opinion of Janus Capital Group Inc. (collectively, “JCG” or the “Company”) management, the accompanying unaudited interim condensed consolidated financial statements contain all adjustments necessary to fairly present the financial position, results of operations and cash flows of JCG in accordance with accounting principles generally accepted in the United States of America (“GAAP”). All such adjustments are of a normal recurring nature. Such interim condensed consolidated financial statements have been prepared in accordance with the instructions to Form 10-Q pursuant to the rules and regulations of the Securities and Exchange Commission (“SEC”). Certain information and footnote disclosures normally included in financial statements prepared in accordance with GAAP have been condensed or omitted pursuant to such rules and regulations. Events subsequent to the balance sheet date have been evaluated for inclusion in the accompanying condensed consolidated financial statements through the issuance date. These condensed consolidated financial statements should be read in conjunction with JCG’s Annual Report on Form 10-K for the year ended December 31, 2012.
	The accompanying condensed consolidated financial statements have been prepared on a consistent basis with the accounting policies described in Note 2 to the consolidated financial statements that are presented in JCG’s Annual Report on Form 10-K for the year ended December 31, 2012.

Recent_Accounting_Guidance

Recent Accounting Guidance	9 Months Ended
	Sep. 30, 2013
Recent Accounting Guidance
Recent Accounting Guidance	Note 2 — Recent Accounting Guidance
	In February 2013, the Financial Accounting Standards Board issued Accounting Standards Update (“ASU”) No. 2013-02, “Comprehensive Income”. The ASU requires an entity to disclose changes in accumulated other comprehensive income (“OCI”) balances by component and disaggregate the total change between current period OCI and reclassification adjustments. For significant reclassifications out of accumulated OCI, an entity is required to identify each line item affected by the reclassification in the notes to the financial statements or on the statement where net income is presented. The ASU is effective for JCG’s fiscal period beginning January 1, 2013. JCG adopted ASU No. 2013-02 on January 1, 2013, and added related disclosure in Note 10 — Accumulated Other Comprehensive (Loss) Income.

Investment_Securities

Investment Securities	9 Months Ended
	Sep. 30, 2013
Investment Securities
Investment Securities	Note 3 — Investment Securities
	JCG’s investment securities as of September 30, 2013, and December 31, 2012, are summarized as follows (in millions):
		September 30,			December 31,
		2013			2012
	Trading securities:
	Seeded investment products	$	338.9		$	219.5
	Investments in advised mutual funds	58.4			89
	Deferred compensation plans	13.8			11.9
	Total trading securities	411.1			320.4
	Available-for-sale securities:
	Seeded investment products	23.3			30.1
	Total investment securities	$	434.4		$	350.5
	Trading Securities
	Investment securities classified as trading include seeded investment products, investments in advised mutual funds and investments related to the economic hedging of deferred compensation plans. Investments in advised mutual funds represent those assets that had been previously utilized as economic hedges against JCG’s mutual fund share awards. Effective January 2013, JCG is no longer making dollar-for-dollar investments in advised mutual funds for purposes of economically hedging mutual fund share awards.
	At September 30, 2013, seeded investment products represented $257.4 million in 13 mutual funds advised by JCG and $81.5 million in 27 separately managed accounts. At December 31, 2012, seeded investment products represented $155.3 million in 18 mutual funds advised by JCG and $64.2 million in 25 separately managed accounts.
	JCG recognized $14.5 million and $13.5 million of gains related to trading securities that were still held as of the reporting date for the nine months ended September 30, 2013 and 2012, respectively.
	Available-for-Sale Securities
	At September 30, 2013, and December 31, 2012, seeded investment products advised by JCG classified as available-for-sale securities represented $23.3 million held in 37 mutual funds and $30.1 million held in 31 mutual funds, respectively.
	The following is a summary of the cost, gross unrealized gains and losses, and estimated fair value of seeded investment products classified as available-for-sale securities at September 30, 2013, and December 31, 2012 (in millions):
		September 30,			December 31,
		2013			2012
	Cost basis	$	21.1		$	32.2
	Gross unrealized gains	2.3			1
	Gross unrealized losses	(0.1		)	(3.1		)
	Estimated fair value	$	23.3		$	30.1
	The gross unrealized gains and losses in seeded investment products were recognized as components of other comprehensive income (loss), net of tax on the Condensed Consolidated Statements of Comprehensive Income. JCG reviewed the gross unrealized losses and determined that the losses were not other-than-temporary. No other-than-temporary impairment charges were recognized in the three and nine months ended September 30, 2013 and 2012.
	Realized gains and losses related to the disposition of seeded investment products classified as available-for-sale securities were recognized in investment gains, net on the Condensed Consolidated Statements of Comprehensive Income. The following is a summary of realized gains and losses upon disposition of seeded investment products classified as available-for-sale securities for the three and nine months ended September 30, 2013 and 2012 (in millions):
		Three months ended						Nine months ended
		September 30,						September 30,
		2013			2012			2013			2012
	Realized gains	$	1.8		$	—		$	2.6		$	0.6
	Realized losses	(0.5		)	(0.6		)	(1.1		)	(0.6		)
	Net realized gains (losses)	$	1.3		$	(0.6	)	$	1.5		$	—
	Derivative Instruments
	The Company maintains an economic hedge program that uses derivative instruments to hedge against market volatility of its seed investments. Fluctuations in equity markets, credit markets and foreign currency markets are hedged by using index swaps, futures contracts and forward contracts, respectively. As of September 30, 2013, JCG had six index swap positions with a notional value of $182.5 million, six futures contract positions with a notional value of $84.1 million and four foreign currency forward contract positions with a notional value of $81.6 million.
	These instruments are not designated as hedges for accounting purposes. The index swaps and futures contracts are settled daily, and settlement amounts are recognized in investment gains, net on the Condensed Consolidated Statements of Comprehensive Income. The fair value of the foreign currency forward contracts as of September 30, 2013, and December 31, 2012, was $(2.6) million and $(0.2) million, respectively, and is netted against associated cash collateral within other current assets on the Condensed Consolidated Balance Sheets. Fair value adjustments for the foreign currency forward contracts are recognized in other income, net on the Condensed Consolidated Statements of Comprehensive Income.
	JCG recognized the following net gains on hedged seed investments and net losses on associated index swaps and futures contracts for the three and nine months ended September 30, 2013 and 2012 (in millions):
		Three months ended						Nine months ended
		September 30,						September 30,
		2013			2012			2013			2012
	Hedged seed investments classified as trading securities	$	15.4		$	4.8		$	18.6		$	9.4
	Hedged seed investments classified as available-for-sale securities	0.6			—			0.6			—
	Total hedged seed investments	16			4.8			19.2			9.4
	Futures contracts	(13.7		)	(5.0		)	(20.5		)	(10.1		)
	Index swaps	(0.7		)	—			(2.1		)	—
	Total	$	1.6		$	(0.2	)	$	(3.4	)	$	(0.7	)
	JCG recognized the following net gains on hedged trading securities denominated in a foreign currency and net losses on associated foreign currency forward contracts for the three and nine months ended September 30, 2013 and 2012 (in millions):
		Three months ended						Nine months ended
		September 30,						September 30,
		2013			2012			2013			2012
	Net losses in net income related to:
	Translation gains	$	3.4		$	0.1		$	2.7		$	—
	Foreign currency forward contracts	(3.7		)	(0.2		)	(2.9		)	—
	Total	$	(0.3	)	$	(0.1	)	$	(0.2	)	$	—
	Investment Gains, Net
	Investment gains, net on the Condensed Consolidated Statements of Comprehensive Income includes the following for the three and nine months ended September 30, 2013 and 2012 (in millions):
		Three months ended						Nine months ended
		September 30,						September 30,
		2013			2012			2013			2012
	Seeded investment products	$	17.4		$	8.7		$	18		$	15.3
	Noncontrolling interests in seeded investment products	2			0.6			2.1			1.7
	Investments in advised mutual funds	2.2			3.3			7			6.1
	Futures contracts and index swaps	(14.4		)	(5.0		)	(22.6		)	(10.1		)
	Economic hedges for deferred compensation plans	0.7			—			1.9			—
Other	—			—			—			(6.1		)
Investment gains, net	$	7.9		$	7.6		$	6.4		$	6.9
Purchases, Sales and Maturities
Cash flows related to investment securities for the three and nine months ended September 30, 2013 and 2012, are summarized as follows (in millions):
	Three months ended September 30,												Nine months ended September 30,
	2013						2012						2013					2012
	Purchases			Sales/			Purchases			Sales/			Purchases			Sales/		Purchases			Sales/
				Maturities						Maturities						Maturities					Maturities
Trading securities	$	(2.1	)	$	2.2		$	(16.4	)	$	6.9		$	(113.5	)	$	62.5	$	(77.9	)	$	51.4
Available-for-sale securities	(0.1		)	8.1			(0.1		)	2.9			(0.4		)	18.2		(0.8		)	8
Seed capital derivative instruments	(19.2		)	8			(7.4		)	1.8			(53.9		)	31.5		(17.7		)	10.1
Total cash flows	$	(21.4	)	$	18.3		$	(23.9	)	$	11.6		$	(167.8	)	$	112.2	$	(96.4	)	$	69.5

Fair_Value_Measurements

Fair Value Measurements	9 Months Ended
	Sep. 30, 2013
Fair Value Measurements
Fair Value Measurements	Note 4 — Fair Value Measurements
	The following table presents assets, liabilities and redeemable noncontrolling interests measured or disclosed at fair value on a recurring basis as of September 30, 2013 (in millions):
		Fair Value Measurements Using:
		Quoted prices in
		active markets for			Significant other			Significant
		identical assets			observable inputs			unobservable inputs
		(Level 1)			(Level 2)			(Level 3)			Total
	Assets:
	Cash equivalents	$	—		$	179.3		$	—		$	179.3
	Trading securities:
	Seeded investment products	245.6			93.3			—			338.9
	Investments in advised mutual funds	58.4			—			—			58.4
	Deferred compensation plans hedge assets	13.8			—			—			13.8
	Available-for-sale securities:
	Seeded investment products	5.3			18			—			23.3
	Total investment securities	323.1			111.3			—			434.4
	Total assets	$	323.1		$	290.6		$	—		$	613.7
	Liabilities:
	Current portion of long-term debt	$	—		$	100.1		$	—		$	100.1
	Long-term debt	—			507.2			—			507.2
	Foreign currency forward contracts	—			2.6			—			2.6
	Total liabilities	$	—		$	609.9		$	—		$	609.9
	Redeemable noncontrolling interests	$	—		$	—		$	7.1		$	7.1
	The following table presents assets, liabilities and redeemable noncontrolling interests measured or disclosed at fair value on a recurring basis as of December 31, 2012 (in millions):
		Fair Value Measurements Using:
		Quoted prices in
		active markets for			Significant other			Significant
		identical assets			observable inputs			unobservable inputs
		(Level 1)			(Level 2)			(Level 3)			Total
	Assets:
	Cash equivalents	$	—		$	250.1		$	—		$	250.1
	Trading securities:
	Seeded investment products	74.2			145.3			—			219.5
	Investments in advised mutual funds	89			—			—			89
	Deferred compensation plans hedge assets	11.9			—			—			11.9
	Available-for-sale securities:
	Seeded investment products	7.5			22.6			—			30.1
	Total investment securities	182.6			167.9			—			350.5
	Total assets	$	182.6		$	418		$	—		$	600.6
	Liabilities:
	Long-term debt	$	—		$	618.3		$	—		$	618.3
	Foreign currency forward contracts	—			0.1			—			0.1
	Total liabilities	$	—		$	618.4		$	—		$	618.4
	Redeemable noncontrolling interests	$	—		$	—		$	42.9		$	42.9
	JCG’s Level 1 fair value measurements consist of trading securities and available-for-sale securities with quoted market prices in active markets. The majority of investment securities classified as Level 2 are debt securities with values derived from evaluated pricing by independent third-party providers. Short-term securities with maturities of 60 days or less are valued at amortized cost, which approximates market value, and are also categorized as Level 2 in the hierarchy. The underlying securities of mutual funds and separate accounts may be denominated in a foreign currency. In some cases, the closing price of such securities may be adjusted to capture the effects of any post-closing activity impacting the markets in which they trade. Security prices are adjusted based upon historical impacts for similar post-close activity. These adjustments result in the securities being classified as Level 2 and may also result in movements of securities between Level 1 and Level 2.
	Transfers between Level 1 and Level 2 classifications for the nine months ended September 30, 2013 and 2012, are summarized as follows (in millions):
		September 30,
		2013			2012
	Transfers from Level 1 to Level 2	$	—		$	—
	Transfers from Level 2 to Level 1	$	13.4		$	4.9
	Transfers from Level 2 to Level 1 primarily represented foreign securities whose quoted market prices no longer required adjustment for subsequent fluctuations in active markets. Transfers are generally recognized at the end of each reporting period.
	JCG’s Level 3 recurring fair value measurements represent redeemable noncontrolling interests in INTECH Investment Management LLC (“INTECH”) and Perkins Investment Management LLC (“Perkins”).
	Redeemable noncontrolling interests in INTECH are measured at fair value on an annual basis, or more frequently if events or circumstances indicate that material change in the fair value of INTECH has occurred. The fair value of INTECH is determined using a discounted cash flow methodology with probability-weighted scenarios. Discounted cash flow analyses are prepared internally within JCG’s finance organization by personnel with appropriate valuation experience and credentials. In preparing the analyses, JCG benchmarks valuation metrics such as multiples of earnings against recent market transactions of a similar size and nature to ensure that the estimates are reasonable. The analyses are reviewed by senior JCG finance personnel and JCG’s Chief Financial Officer. The analyses may also be reviewed by the holders of the noncontrolling interests in INTECH. If the analyses are reviewed by the holders of the noncontrolling interests in INTECH and the valuation is agreed to by both JCG and the holders of noncontrolling interests, JCG utilizes the analyses to value the redeemable noncontrolling interests. If the holders of noncontrolling interests object to the analyses, a valuation is obtained from a third-party investment bank agreed upon by the interested parties. JCG has engaged a third-party investment bank for such valuation in the past and may do so again in the future.
	Significant unobservable inputs related to the INTECH discounted cash flow analysis include forecasted operating results, discount rate and terminal multiple of forecasted earnings before interest expense, taxes, depreciation and amortization. Significant increases or decreases in the forecasted operating results and terminal multiple inputs in isolation would result in a significantly higher or lower fair value measurement, respectively. A significant increase or decrease in the discount rate input would result in a significantly lower or higher fair value measurement, respectively. The terminal multiple input for each scenario is influenced by the growth rate contained in the forecasted operating results. Generally, a change in the assumptions used for forecasted operating results is accompanied by a directionally similar change in the terminal multiple. A fair value analysis on the INTECH redeemable noncontrolling interests was performed during the first quarter 2013. The average discount rate and average terminal multiple used in the first quarter 2013 analysis were 13% and 7.50x, respectively.
	Redeemable noncontrolling interests in Perkins are measured by a contractual formula intended to represent fair value on a monthly basis. The contractual formula is prepared internally within JCG’s finance organization and is reviewed by senior JCG finance personnel and JCG’s Chief Financial Officer. The analyses are also reviewed by the holders of the noncontrolling interests in Perkins. In the event either party objects to the valuation determined by the contractual formula, a valuation is obtained from a third-party investment bank agreed upon by the interested parties. JCG has not engaged a third-party investment bank for such valuation in the past but may do so in the future.
	Inputs to the Perkins contractual formula include trailing 12-month revenues of Perkins investment products and the relative performance of Perkins investment products as compared to benchmark indices. The contractual formula applies defined revenue multiples to trailing 12-month Perkins revenues to arrive at fair value; the revenue multiples are subject to increases if certain performance targets are met. Due to the contractual nature of the formula, the revenue and performance inputs are relationally independent. The revenue multiples used in the September 30, 2013, and December 31, 2012, valuations were 3.39x and 3.43x, respectively.
	Nonrecurring Level 3 fair value measurements include goodwill and intangible assets. JCG measures the fair value of goodwill and intangible assets using a discounted cash flow analysis that requires assumptions regarding projected future earnings and discount rates. Because of the significance of the unobservable inputs in the fair value measurements of these assets and liabilities, such measurements have been classified as Level 3. There were no remeasurements of these assets during the nine months ended September 30, 2013 and 2012.
	The changes in fair value of JCG’s recurring Level 3 fair value measurements are as follows (in millions):
		Three months ended September 30,						Nine months ended September 30,
		2013			2012			2013			2012			2012
		Redeemable			Redeemable			Redeemable			Redeemable			Other
		noncontrolling			noncontrolling			noncontrolling			noncontrolling			investment
		interests			interests			interests			interests			securities
	Beginning of period fair value	$	40.3		$	65.6		$	42.9		$	85.4		$	3.2
Distributions	(0.1		)	(1.3		)	(4.3		)	(7.3		)	—
Current earnings	0.7			1.5			2.8			4.9			—
Sale of investments	—			—			—			—			(3.2		)
Purchase of redeemable noncontrolling interests (1)	(33.8		)	(2.6		)	(33.8		)	(5.9		)	—
Vesting of noncontrolling interests	—			—			1.2			1.2			—
Change in fair value	—			(7.0		)	(1.7		)	(22.1		)	—
End of period fair value	$	7.1		$	56.2		$	7.1		$	56.2		$	—
(1)         Refer to Note 7— Noncontrolling Interests for information regarding the redemption of certain Perkins ownership units.

Debt

Debt	9 Months Ended
	Sep. 30, 2013
Debt
Debt	Note 5 — Debt
	Debt at September 30, 2013, and December 31, 2012, consisted of the following (in millions):
		September 30, 2013						December 31, 2012
		Carrying			Fair			Carrying		Fair
		value			value			value		value
	6.119% Senior Notes due 2014	$	38.9		$	39.8		$	38.9	$	40.7
	3.250% Convertible Senior Notes due 2014	57			60.3			154		176
	6.700% Senior Notes due 2017	344.4			384.9			352.2		401.6
	0.750% Convertible Senior Notes due 2018	102.7			122.3			—		—
	Total	543			607.3			545.1		618.3
	Less: Current maturities	(95.9		)	(100.1		)	—		—
	Total long-term debt	$	447.1		$	507.2		$	545.1	$	618.3
	Fair Value of Debt
	The fair value of debt was determined using broker quotes and recent trading activity for each of the notes listed above, which are considered Level 2 inputs.
	Partial Buyback of 6.700% Senior Notes and Loss on Early Extinguishment of Debt
	On August 30, 2013, JCG repurchased on the open market $8.0 million aggregate principal amount of the Company’s outstanding 6.70% Senior Notes due 2017 (“2017 Notes”) for $8.9 million in cash. JCG recognized a loss of $0.9 million on the repurchase.
	Exchange of Convertible Senior Notes and Loss on Early Extinguishment of Debt
	On June 14, 2013, JCG entered into separate, privately negotiated exchange agreements pursuant to which $110.0 million aggregate principal amount of JCG’s existing, 3.25% Convertible Senior Notes due 2014 (“2014 Notes”) was exchanged for $116.6 million aggregate principal amount of newly issued, 0.75% Convertible Senior Notes due 2018 (“2018 Notes”). Immediately following the exchange, $60.0 million aggregate principal amount of existing 2014 Notes remained outstanding.
	The non-cash exchange of the 2018 Notes for a portion of the 2014 Notes constituted an extinguishment of debt under applicable accounting guidance. As a result of the extinguishment, JCG recognized a $12.6 million loss on early extinguishment of debt related to the settlement of the liability component of the exchanged 2014 Notes, and a $2.0 million reduction in equity related to the retirement of the conversion feature of the exchanged 2014 Notes.
	0.750% Convertible Senior Notes
	The 2018 Notes pay interest semiannually at a rate of 0.75% per annum on January 15 and July 15 of each year, beginning on January 15, 2014, and will be convertible, under certain circumstances, into cash, shares of JCG common stock, or a combination of cash and shares of JCG common stock, at the Company’s election. The initial conversion rate of the 2018 Notes is 92.1 shares of JCG common stock per $1,000 principal amount of the 2018 Notes, which is equivalent to an initial conversion price of approximately $10.86 per share of common stock, subject to adjustment in certain circumstances. This initial conversion price represents a premium of 25% relative to the $8.69 per share closing price of JCG’s common stock on June 13, 2013, the date of pricing.
	Holders may convert their 2018 Notes at their option prior to the close of business on the business day immediately preceding April 15, 2018, only under the following circumstances: (1) during any calendar quarter commencing after September 30, 2013, if the last reported sale price of JCG’s common stock for at least 20 trading days (whether or not consecutive) during a period of 30 consecutive trading days ending on the last trading day of the preceding calendar quarter is greater than or equal to 130% of the applicable conversion price on each applicable trading day; (2) during the five business day period after any five consecutive trading day period in which the trading price per $1,000 principal amount of the 2018 Notes for each day of such period is less than 98% of the product of the last reported sale price of JCG’s common stock and the applicable conversion rate; or (3) upon the occurrence of specified corporate events.
	Because the 2018 Notes may be wholly or partially settled in cash, the liability and conversion feature components are required to be accounted for separately. The initial $102.0 million liability component was determined by discounting future contractual cash flows at a 3.5% rate, which is consistent with the estimated market interest rate for similar senior notes with no conversion option. The liability component will accrete up to the face value of $116.6 million over the five-year expected term of the 2018 Notes through interest expense. The $14.6 million initial equity component was determined as the difference between the initial liability component and the face value of the 2018 Notes and was recorded as an adjustment to equity.
	The 2018 Notes include an unamortized discount at September 30, 2013 of $13.9 million, which will be amortized over the remaining term. Interest expense related to the 2018 Notes includes interest on the outstanding principal balance as well as amortization of capitalized issuance costs and totaled $1.0 million and $1.1 million for the three and nine months ended September 30, 2013, respectively.
	Convertible Note Hedge and Warrant Transactions
	In connection with the 2018 Notes issuance, JCG entered into convertible note hedge and warrant transactions which, in combination, are intended to reduce the potential for future dilution to existing shareholders by effectively increasing the conversion price of the 2018 Notes to JCG from $10.86 to $12.60 per share of common stock.
	The convertible note hedge and warrant transactions consist of two separate instruments: purchased call options and the sale of warrants. The call options represent the same number of shares of JCG’s common stock underlying the 2018 Notes with a strike price of $10.86 per share of common stock, which is equal to the conversion price of the 2018 Notes. The call options cost $16.1 million. To offset the cost of the call options, JCG sold warrants to the counterparty of the call options for the same number of shares of JCG’s common stock underlying the 2018 Notes with an exercise price of $12.60 per share of common stock. The proceeds from the sale of the warrants totaled $10.5 million. The call options and warrants may be settled in cash or stock at JCG’s election. The instruments are indexed to JCG’s equity and may potentially settle in JCG stock. Accordingly, the Company recorded the $5.6 million net cost of the instruments as a reduction in equity, and will not recognize subsequent changes in fair value of these financial instruments in its consolidated financial statements.
	3.250% Convertible Senior Notes
	In July 2009, JCG issued $170.0 million of 2014 Notes, which pay interest at 3.25% semiannually on July 15 and January 15 of each year and mature on July 15, 2014, unless earlier converted. As discussed above, $110.0 million aggregate principal amount of the 2014 Notes was exchanged for the 2018 Notes, leaving $60.0 million aggregate principal amount of 2014 Notes outstanding. The 2014 Notes are convertible under certain circumstances into cash, shares of JCG common stock, or a combination of cash and shares of JCG common stock at JCG’s election. The holders of the 2014 Notes have the right to require JCG to repurchase their notes for cash under certain circumstances. The original conversion rate of 71.3 shares of JCG common stock per $1,000 principal amount of 2014 Notes was most recently adjusted during the third quarter 2013 when JCG paid a quarterly cash dividend of $0.07 per share. As a result of the quarterly cash dividend paid on August 23, 2013, the conversion rate changed to 75.4 shares of JCG common stock per $1,000 principal amount of 2014 Notes, equivalent to a conversion price of approximately $13.26 per share of common stock. JCG is required to continue to adjust the conversion rate to the extent there are future dividend payments above $0.04 per share on an annual basis. The 2014 Notes are not callable by JCG. During the second quarter 2013, JCG derecognized $7.4 million and $0.6 million of unamortized debt discount and capitalized issuance costs, respectively, in conjunction with the exchange of $110.0 million aggregate principal amount of the 2014 Notes discussed above.
	The 2014 Notes include an unamortized discount at September 30, 2013, of $3.0 million, which will be amortized over the remaining term. Interest expense related to the 2014 Notes includes interest on the outstanding principal balance as well as amortization of capitalized issuance costs and totaled $1.5 million and $9.3 million for the three and nine months ended September 30, 2013, respectively. Interest expense related to the 2014 Notes totaled $3.9 million and $11.6 million for the three and nine months ended September 30, 2012, respectively.
	Credit Facility
	At September 30, 2013, JCG had a $250 million, unsecured, revolving credit facility (the “Credit Facility”) with JPMorgan Chase Bank, N.A., as administrative agent and swingline lender. Under the Credit Facility, JCG’s financing leverage ratio cannot exceed 3.00x, and its interest coverage ratio must equal or exceed 4.00x. At September 30, 2013, JCG was in compliance with all covenants, and there were no borrowings under the Credit Facility. The Credit Facility has a maturity date of October 14, 2014.
	Capital Lease Obligations
	JCG’s capital lease obligations represent leased computer equipment. The carrying values of the obligations totaled $2.1 million and $2.9 million at September 30, 2013, and December 31, 2012, respectively, and are included in other accrued liabilities and other liabilities on the Condensed Consolidated Balance Sheets. The related lease terms extend through 2017.

Income_Taxes

Income Taxes	9 Months Ended
	Sep. 30, 2013
Income Taxes
Income Taxes	Note 6 — Income Taxes
	JCG’s provision for income taxes was $21.7 million and $17.0 million, or 37.8% and 38.0% of income before taxes, for the three months ended September 30, 2013 and 2012, respectively. The provision for income taxes was $53.0 million and $45.4 million, or 39.2% and 36.5% of income before taxes, for the nine months ended September 30, 2013 and 2012, respectively. The Company’s effective tax rate for the nine month period ending September 30, 2013 increased by 2.7% due largely to the reversal of unrealized deferred tax assets upon the expiration and vesting of certain equity-based compensation awards.
	As of September 30, 2013, JCG had $6.0 million of accrued reserves for income tax contingencies. JCG accrued additional reserves for income tax contingencies in the amount of $0.3 million during the three months ended September 30, 2013, creating a net tax expense of $0.2 million. JCG also decreased its income tax contingency reserves by $0.1 million and $0.7 million during the three and nine months ended September 30, 2013, respectively, as a result of the expiration of statutes of limitations and audit settlements, creating a net tax benefit of $0.1 million and $0.5 million, respectively. JCG anticipates that its income tax contingency reserves will decrease by approximately $1.2 million in the next 12 months, primarily from the expiration of statutes of limitations and the resolution of audits. Accrued reserves for income tax contingencies are presented in other accrued liabilities and other liabilities on the Condensed Consolidated Balance Sheets.

Noncontrolling_Interests

Noncontrolling Interests	9 Months Ended
	Sep. 30, 2013
Noncontrolling Interests
Noncontrolling Interests	Note 7 — Noncontrolling Interests
	Noncontrolling interests in net income consist of the following (in millions):
		Three months ended					Nine months ended
		September 30,					September 30,
		2013		2012			2013		2012
	Nonredeemable noncontrolling interests in subsidiaries	$	0.3	$	0.5		$	0.8	$	1.4
	Nonredeemable noncontrolling interests in consolidated seeded investment products	2		0.6			2.1		1.7
	Redeemable noncontrolling interests in subsidiaries	0.7		1.5			2.8		4.9
	Total noncontrolling interests in net income	$	3	$	2.6		$	5.7	$	8
	Noncontrolling interests on the Condensed Consolidated Balance Sheets consist of the following:
	Nonredeemable Noncontrolling Interests
	Noncontrolling interests that are not subject to redemption rights include, or have included, employee ownership interests in two of JCG’s subsidiaries, INTECH and Perkins, and third-party investors’ ownership in consolidated seeded investment products. Certain of the Perkins ownership interests granted to employees became subject to redemption rights upon vesting in the first quarter 2013 at which time such interests were reclassified to redeemable noncontrolling interests.
	Nonredeemable noncontrolling interests as of September 30, 2013, and December 31, 2012, are summarized as follows (in millions):
		September 30,		December 31,
		2013		2012
	Nonredeemable noncontrolling interests in consolidated seeded investment products	$	33.9	$	12.4
	Nonredeemable noncontrolling interests in subsidiaries	4.2		4.8
	Total nonredeemable noncontrolling interests	$	38.1	$	17.2
	Changes in noncontrolling interests in consolidated seeded investment products are driven by two factors: changes in the market value of the underlying seeded investment products and changes in ownership of the underlying seeded investment products.
	The following table presents a rollforward of noncontrolling interests in consolidated seeded investment products (in millions):
		Three months ended					Nine months ended
		September 30,					September 30,
		2013		2012			2013		2012
	Beginning of period balance	$	26.1	$	35.6		$	12.4	$	29.2
	Change in market value	2		0.6			2.1		1.7
	Change in ownership	5.8		(23.6		)	19.4		(18.3		)
	End of period balance	$	33.9	$	12.6		$	33.9	$	12.6
	Redeemable Noncontrolling Interests
	Redeemable noncontrolling interests consist of INTECH and Perkins interests that are currently redeemable or will become subject to redemption rights at certain future dates. Also included are undistributed earnings due to the redeemable noncontrolling interests. As of September 30, 2013, and December 31, 2012, redeemable noncontrolling interests are summarized as follows (in millions):
		September 30,		December 31,
		2013		2012
	Redeemable noncontrolling interest in subsidiaries	$	5.8	$	40.1
	Undistributed earnings	1.3		2.8
	Total redeemable noncontrolling interests	$	7.1	$	42.9
	INTECH
	INTECH ownership interests held by a founding member had an estimated value of approximately $5.2 million and $4.8 million as of September 30, 2013, and December 31, 2012, respectively, representing approximately 1.0% aggregate ownership of INTECH for both periods. This founding member is entitled to retain his remaining INTECH interests until his death and has the option to require JCG to purchase from him his ownership interest of INTECH at fair value.
	At September 30, 2013, and December 31, 2012, no ownership interests subject to redemption rights were held by other INTECH employees.
	Perkins
	The total Perkins noncontrolling interests subject to redemption rights had an estimated fair value of approximately $0.6 million and $35.3 million as of September 30, 2013, and December 31, 2012, respectively.
	On February 1, 2013, the noncontrolling owners of Perkins (who then owned 22.2% of the equity units of Perkins) exercised their right to put 98% of their equity units to JCG. Under the terms of the put, the noncontrolling ownership units were redeemed at fair value of $33.8 million as determined on August 31, 2013, six full months following the month of the put exercise. The fair value of the ownership units was based on a contractual formula driven by revenue and investment performance of products managed by Perkins.
	The noncontrolling interests were primarily held by founding members who are not involved in the management of Perkins. Perkins management continue to hold the majority of their interests in Perkins through senior profits interests awards and long-term incentive compensation plans. The Perkins senior profits interests awards generally receive 5% of Perkins annual taxable income and have a terminal value based on Perkins revenue and relative investment performance of products managed by Perkins. The Perkins senior profits interests awards and long-term incentive compensation plans provide active members of Perkins management an ongoing stake in the success of Perkins.

LongTerm_Incentive_Compensatio

Long-Term Incentive Compensation	9 Months Ended
	Sep. 30, 2013
Long-Term Incentive Compensation
Long-Term Incentive Compensation	Note 8 — Long-Term Incentive Compensation
	JCG generally grants annual long-term incentive awards in February of each year. JCG granted $55.8 million in long-term incentive awards during the nine months ended September 30, 2013, which generally vest and will be recognized ratably over a four-year period. The 2013 awards consisted of $33.4 million of restricted stock (3.5 million shares at a weighted-average price of $9.55 per share), $22.2 million of mutual fund share awards and $0.2 million of stock option awards.
	JCG records compensation expense associated with long-term incentive awards based on the amount of awards expected to vest at the end of the stated service period, comprising the total value of the awards less an estimate for forfeitures.
	During the three and nine months ended September 30, 2013, JCG recognized $2.4 million and $5.7 million of long-term incentive compensation expense related to mark-to-market adjustments of mutual fund share awards and deferred compensation plans, respectively, and $1.7 million and $4.3 million during the same periods in 2012, respectively.

Other_Income_Net

Other Income, Net	9 Months Ended
	Sep. 30, 2013
Other Income, Net
Other Income, Net	Note 9 — Other Income, Net
	The components of other income, net are as follows (in millions):
		Three months ended					Nine months ended
		September 30,					September 30,
		2013		2012			2013		2012
	Dividend income	$	0.4	$	0.3		$	1.1	$	1
	Interest income	0.1		0.2			0.4		0.4
	Foreign currency gains (losses)	0.3		(0.2		)	0.2		(1.0		)
	Other, net	—		—			0.1		1.8
	Total	$	0.8	$	0.3		$	1.8	$	2.2

Accumulated_Other_Comprehensiv

Accumulated Other Comprehensive (Loss) Income	9 Months Ended
	Sep. 30, 2013
Accumulated Other Comprehensive (Loss) Income
Accumulated Other Comprehensive (Loss) Income	Note 10 — Accumulated Other Comprehensive (Loss) Income
	Changes in accumulated other comprehensive (loss) income, net of tax, for the three months ended September 30, 2013 and 2012, are as follows (in millions):
		Three months ended September 30,
		2013									2012
		Unrealized gains									Unrealized gains
		(losses) on			Foreign						(losses) on			Foreign
		available-for-sale			currency						available-for-sale			currency
		securities			items			Total			securities			items			Total
	Beginning balance	$	1.1		$	(2.3	)	$	(1.2	)	$	0.9		$	(1.4	)	$	(0.5	)
	Other comprehensive gain before reclassifications	0.7			—			0.7			0.1			0.3			0.4
	Amounts reclassified from accumulated other comprehensive (loss) income to:
	Investment gains, net	(0.7		)	—			(0.7		)	0.2			—			0.2
	Net current period other comprehensive income	—			—			—			0.3			0.3			0.6
	Ending balance	$	1.1		$	(2.3	)	$	(1.2	)	$	1.2		$	(1.1	)	$	0.1
	Changes in accumulated other comprehensive (loss) income, net of tax, for the nine months ended September 30, 2013 and 2012, are as follows (in millions):
		Nine months ended September 30,
		2013									2012
		Unrealized gains									Unrealized gains
		(losses) on			Foreign						(losses) on			Foreign
		available-for-sale			currency						available-for-sale			currency
		securities			items			Total			securities			items			Total
	Beginning balance	$	1.4		$	(0.8	)	$	0.6		$	0.7		$	(1.2	)	$	(0.5	)
	Other comprehensive gain before reclassifications	0.6			—			0.6			0.6			0.1			0.7
	Amounts reclassified from accumulated other comprehensive (loss) income to:
	Investment gains, net	(0.9		)	—			(0.9		)	(0.1		)	—			(0.1		)
	Other income, net	—			(1.5		)	(1.5		)	—			—			—
	Net current period other comprehensive (loss) income	(0.3		)	(1.5		)	(1.8		)	0.5			0.1			0.6
	Ending balance	$	1.1		$	(2.3	)	$	(1.2	)	$	1.2		$	(1.1	)	$	0.1

Earnings_Per_Share

Earnings Per Share	9 Months Ended
	Sep. 30, 2013
Earnings Per Share
Earnings Per Share	Note 11 — Earnings Per Share
	Basic earnings per common share is calculated by dividing net income attributable to JCG common shareholders by the weighted-average number of common shares outstanding during the period. The calculation of diluted earnings per common share adjusts the weighted-average shares outstanding by the dilutive impact of shares underlying stock options, unvested restricted stock awards and price-vesting units.
	The following is a summary of the earnings per share calculation for the three and nine months ended September 30, 2013 and 2012 (in millions, except per share data):
			Three months ended					Nine months ended
			September 30,					September 30,
			2013			2012		2013		2012
	Net income attributable to JCG common shareholders		$	32.6		$	25.1	$	76.4	$	71.1
	Basic earnings per share attributable to JCG common shareholders:
	Weighted-average common shares outstanding		184.7			183.4		184.8		183.8
	Basic earnings per share		$	0.18		$	0.14	$	0.41	$	0.39
	Diluted earnings per share attributable to JCG common shareholders:
	Weighted-average common shares outstanding		184.7			183.4		184.8		183.8
	Dilutive effect of stock options, unvested restricted stock and price-vesting units using the treasury stock method		1.7			1.9		1.2		1.3
	Weighted-average diluted common shares outstanding		186.4			185.3		186		185.1
	Diluted earnings per share		$	0.17		$	0.14	$	0.41	$	0.38
	Dividends paid per share		$	0.07		$	0.06	$	0.14	$	0.17
	The following stock options, unvested restricted stock and price-vesting units are anti-dilutive and have not been included in the weighted-average diluted shares outstanding calculation (in millions):
			Three months ended				Nine months ended
			September 30,				September 30,
			2013		2012		2013	2012
	Employee stock options		7		9.6		7	9.6
	Other stock options		14		14		14	14
	Unvested restricted stock and price-vesting units		0.2		1.4		1	1.5
	All shares held in the JCG Employee Stock Ownership Plan are treated as outstanding for purposes of computing basic earnings per share. The computation of diluted earnings per share does not include the impact of the conversion of the 2014 Notes and 2018 Notes because their conversion would be anti-dilutive as the conversion criteria have not been satisfied.
	Dividends
	Dividends paid during the nine months ended September 30, 2013, are summarized as follows:
	Dividend			Date		Date
	per share			declared		paid
	$	0.07		April 18		May 24
	$	0.07		July 22		August 23
	On December 10, 2012, JCG’s Board of Directors declared a regular quarterly cash dividend of $0.06 per share, which was paid on December 31, 2012, to stockholders of record at the close of business on December 21, 2012. This accelerated quarterly cash dividend was in place of the quarterly cash dividend scheduled to be declared in January 2013.
	On April 18, 2013, JCG’s Board of Directors approved an increase of $0.01 per share, or 17%, in the Company’s regular quarterly dividend. The approved quarterly rate of $0.07 per share represents an expected annualized dividend rate of $0.28 per share of common stock.
	On October 21, 2013, JCG’s Board of Directors declared a regular quarterly cash dividend of $0.07 per share. The quarterly dividend will be paid on November 22, 2013, to stockholders of record at the close of business on November 8, 2013.

Litigation_and_Other_Regulator

Litigation and Other Regulatory Matters	9 Months Ended
	Sep. 30, 2013
Litigation and Other Regulatory Matters
Litigation and Other Regulatory Matters	Note 12 — Litigation and Other Regulatory Matters
	JCG is periodically involved in various legal proceedings and other regulatory matters. At September 30, 2013, JCG had a $0.5 million litigation accrual for all pending litigation matters. Possible losses in addition to the litigation accrual cannot be currently estimated, and as such, no additional accruals have been made. Although there can be no assurances, based on information currently available, management believes that it is probable that the ultimate outcome of matters that are pending or threatened will not have a material effect on JCG’s consolidated financial condition.

Investment_Securities_Tables

Investment Securities (Tables)	9 Months Ended
	Sep. 30, 2013
Investment Securities
Investment securities, carried at fair value	JCG’s investment securities as of September 30, 2013, and December 31, 2012, are summarized as follows (in millions):
		September 30,			December 31,
		2013			2012
	Trading securities:
	Seeded investment products	$	338.9		$	219.5
	Investments in advised mutual funds	58.4			89
	Deferred compensation plans	13.8			11.9
	Total trading securities	411.1			320.4
	Available-for-sale securities:
	Seeded investment products	23.3			30.1
	Total investment securities	$	434.4		$	350.5
Summary of the cost, gross unrealized gains and losses, and estimated fair value of seeded investment products classified as available-for-sale securities	The following is a summary of the cost, gross unrealized gains and losses, and estimated fair value of seeded investment products classified as available-for-sale securities at September 30, 2013, and December 31, 2012 (in millions):
		September 30,			December 31,
		2013			2012
	Cost basis	$	21.1		$	32.2
	Gross unrealized gains	2.3			1
	Gross unrealized losses	(0.1		)	(3.1		)
	Estimated fair value	$	23.3		$	30.1
Summary of realized gains and losses upon disposition of investment products classified as available-for-sale securities	The following is a summary of realized gains and losses upon disposition of seeded investment products classified as available-for-sale securities for the three and nine months ended September 30, 2013 and 2012 (in millions):
		Three months ended						Nine months ended
		September 30,						September 30,
		2013			2012			2013			2012
	Realized gains	$	1.8		$	—		$	2.6		$	0.6
	Realized losses	(0.5		)	(0.6		)	(1.1		)	(0.6		)
	Net realized gains (losses)	$	1.3		$	(0.6	)	$	1.5		$	—
Schedule of net (losses) gains in earnings on hedged seed investments and associated index swaps and futures contracts	JCG recognized the following net gains on hedged seed investments and net losses on associated index swaps and futures contracts for the three and nine months ended September 30, 2013 and 2012 (in millions):
		Three months ended						Nine months ended
		September 30,						September 30,
		2013			2012			2013			2012
	Hedged seed investments classified as trading securities	$	15.4		$	4.8		$	18.6		$	9.4
	Hedged seed investments classified as available-for-sale securities	0.6			—			0.6			—
	Total hedged seed investments	16			4.8			19.2			9.4
	Futures contracts	(13.7		)	(5.0		)	(20.5		)	(10.1		)
	Index swaps	(0.7		)	—			(2.1		)	—
	Total	$	1.6		$	(0.2	)	$	(3.4	)	$	(0.7	)
Schedule of net gains (losses) in earnings on hedged trading securities denominated in a foreign currency and associated foreign currency forward contracts	JCG recognized the following net gains on hedged trading securities denominated in a foreign currency and net losses on associated foreign currency forward contracts for the three and nine months ended September 30, 2013 and 2012 (in millions):
		Three months ended						Nine months ended
		September 30,						September 30,
		2013			2012			2013			2012
	Net losses in net income related to:
	Translation gains	$	3.4		$	0.1		$	2.7		$	—
	Foreign currency forward contracts	(3.7		)	(0.2		)	(2.9		)	—
	Total	$	(0.3	)	$	(0.1	)	$	(0.2	)	$	—
Schedule of investment gains, net on the Condensed Consolidated Statements of Comprehensive Income	Investment gains, net on the Condensed Consolidated Statements of Comprehensive Income includes the following for the three and nine months ended September 30, 2013 and 2012 (in millions):
		Three months ended						Nine months ended
		September 30,						September 30,
		2013			2012			2013			2012
	Seeded investment products	$	17.4		$	8.7		$	18		$	15.3
	Noncontrolling interests in seeded investment products	2			0.6			2.1			1.7
	Investments in advised mutual funds	2.2			3.3			7			6.1
	Futures contracts and index swaps	(14.4		)	(5.0		)	(22.6		)	(10.1		)
	Economic hedges for deferred compensation plans	0.7			—			1.9			—
	Other	—			—			—			(6.1		)
	Investment gains, net	$	7.9		$	7.6		$	6.4		$	6.9
Cash flows related to investment securities	Cash flows related to investment securities for the three and nine months ended September 30, 2013 and 2012, are summarized as follows (in millions):
		Three months ended September 30,												Nine months ended September 30,
		2013						2012						2013					2012
		Purchases			Sales/			Purchases			Sales/			Purchases			Sales/		Purchases			Sales/
					Maturities						Maturities						Maturities					Maturities
	Trading securities	$	(2.1	)	$	2.2		$	(16.4	)	$	6.9		$	(113.5	)	$	62.5	$	(77.9	)	$	51.4
	Available-for-sale securities	(0.1		)	8.1			(0.1		)	2.9			(0.4		)	18.2		(0.8		)	8
	Seed capital derivative instruments	(19.2		)	8			(7.4		)	1.8			(53.9		)	31.5		(17.7		)	10.1
	Total cash flows	$	(21.4	)	$	18.3		$	(23.9	)	$	11.6		$	(167.8	)	$	112.2	$	(96.4	)	$	69.5

Fair_Value_Measurements_Tables

Fair Value Measurements (Tables)	9 Months Ended
	Sep. 30, 2013
Fair Value Measurements
Schedule of assets, liabilities and redeemable noncontrolling interests measured or disclosed at fair value on a recurring basis	The following table presents assets, liabilities and redeemable noncontrolling interests measured or disclosed at fair value on a recurring basis as of September 30, 2013 (in millions):
		Fair Value Measurements Using:
		Quoted prices in
		active markets for			Significant other			Significant
		identical assets			observable inputs			unobservable inputs
		(Level 1)			(Level 2)			(Level 3)			Total
	Assets:
	Cash equivalents	$	—		$	179.3		$	—		$	179.3
	Trading securities:
	Seeded investment products	245.6			93.3			—			338.9
	Investments in advised mutual funds	58.4			—			—			58.4
	Deferred compensation plans hedge assets	13.8			—			—			13.8
	Available-for-sale securities:
	Seeded investment products	5.3			18			—			23.3
	Total investment securities	323.1			111.3			—			434.4
	Total assets	$	323.1		$	290.6		$	—		$	613.7
	Liabilities:
	Current portion of long-term debt	$	—		$	100.1		$	—		$	100.1
	Long-term debt	—			507.2			—			507.2
	Foreign currency forward contracts	—			2.6			—			2.6
	Total liabilities	$	—		$	609.9		$	—		$	609.9
	Redeemable noncontrolling interests	$	—		$	—		$	7.1		$	7.1
	The following table presents assets, liabilities and redeemable noncontrolling interests measured or disclosed at fair value on a recurring basis as of December 31, 2012 (in millions):
		Fair Value Measurements Using:
		Quoted prices in
		active markets for			Significant other			Significant
		identical assets			observable inputs			unobservable inputs
		(Level 1)			(Level 2)			(Level 3)			Total
	Assets:
	Cash equivalents	$	—		$	250.1		$	—		$	250.1
	Trading securities:
	Seeded investment products	74.2			145.3			—			219.5
	Investments in advised mutual funds	89			—			—			89
	Deferred compensation plans hedge assets	11.9			—			—			11.9
	Available-for-sale securities:
	Seeded investment products	7.5			22.6			—			30.1
	Total investment securities	182.6			167.9			—			350.5
	Total assets	$	182.6		$	418		$	—		$	600.6
	Liabilities:
	Long-term debt	$	—		$	618.3		$	—		$	618.3
	Foreign currency forward contracts	—			0.1			—			0.1
	Total liabilities	$	—		$	618.4		$	—		$	618.4
	Redeemable noncontrolling interests	$	—		$	—		$	42.9		$	42.9
Schedule of transfers between Level 1 and Level 2 classifications	Transfers between Level 1 and Level 2 classifications for the nine months ended September 30, 2013 and 2012, are summarized as follows (in millions):
		September 30,
		2013			2012
	Transfers from Level 1 to Level 2	$	—		$	—
	Transfers from Level 2 to Level 1	$	13.4		$	4.9
Schedule of changes in fair value of the recurring Level 3 fair value measurement	The changes in fair value of JCG’s recurring Level 3 fair value measurements are as follows (in millions):
		Three months ended September 30,						Nine months ended September 30,
		2013			2012			2013			2012			2012
		Redeemable			Redeemable			Redeemable			Redeemable			Other
		noncontrolling			noncontrolling			noncontrolling			noncontrolling			investment
		interests			interests			interests			interests			securities
	Beginning of period fair value	$	40.3		$	65.6		$	42.9		$	85.4		$	3.2
	Distributions	(0.1		)	(1.3		)	(4.3		)	(7.3		)	—
	Current earnings	0.7			1.5			2.8			4.9			—
	Sale of investments	—			—			—			—			(3.2		)
	Purchase of redeemable noncontrolling interests (1)	(33.8		)	(2.6		)	(33.8		)	(5.9		)	—
	Vesting of noncontrolling interests	—			—			1.2			1.2			—
	Change in fair value	—			(7.0		)	(1.7		)	(22.1		)	—
	End of period fair value	$	7.1		$	56.2		$	7.1		$	56.2		$	—
	(1)         Refer to Note 7— Noncontrolling Interests for information regarding the redemption of certain Perkins ownership units.

Debt_Tables

Debt (Tables)	9 Months Ended
	Sep. 30, 2013
Debt
Components of debt	Debt at September 30, 2013, and December 31, 2012, consisted of the following (in millions):
		September 30, 2013						December 31, 2012
		Carrying			Fair			Carrying		Fair
		value			value			value		value
	6.119% Senior Notes due 2014	$	38.9		$	39.8		$	38.9	$	40.7
	3.250% Convertible Senior Notes due 2014	57			60.3			154		176
	6.700% Senior Notes due 2017	344.4			384.9			352.2		401.6
	0.750% Convertible Senior Notes due 2018	102.7			122.3			—		—
	Total	543			607.3			545.1		618.3
	Less: Current maturities	(95.9		)	(100.1		)	—		—
	Total long-term debt	$	447.1		$	507.2		$	545.1	$	618.3

Noncontrolling_Interests_Table

Noncontrolling Interests (Tables)	9 Months Ended
	Sep. 30, 2013
Noncontrolling Interests
Schedule of noncontrolling interests in net income	Noncontrolling interests in net income consist of the following (in millions):
		Three months ended					Nine months ended
		September 30,					September 30,
		2013		2012			2013		2012
	Nonredeemable noncontrolling interests in subsidiaries	$	0.3	$	0.5		$	0.8	$	1.4
	Nonredeemable noncontrolling interests in consolidated seeded investment products	2		0.6			2.1		1.7
	Redeemable noncontrolling interests in subsidiaries	0.7		1.5			2.8		4.9
	Total noncontrolling interests in net income	$	3	$	2.6		$	5.7	$	8
Schedule of nonredeemable noncontrolling interests	Nonredeemable noncontrolling interests as of September 30, 2013, and December 31, 2012, are summarized as follows (in millions):
		September 30,		December 31,
		2013		2012
	Nonredeemable noncontrolling interests in consolidated seeded investment products	$	33.9	$	12.4
	Nonredeemable noncontrolling interests in subsidiaries	4.2		4.8
	Total nonredeemable noncontrolling interests	$	38.1	$	17.2
Schedule of rollforward of noncontrolling interests in consolidated seed investment products	The following table presents a rollforward of noncontrolling interests in consolidated seeded investment products (in millions):
		Three months ended					Nine months ended
		September 30,					September 30,
		2013		2012			2013		2012
	Beginning of period balance	$	26.1	$	35.6		$	12.4	$	29.2
	Change in market value	2		0.6			2.1		1.7
	Change in ownership	5.8		(23.6		)	19.4		(18.3		)
	End of period balance	$	33.9	$	12.6		$	33.9	$	12.6
Summary of redeemable noncontrolling interests	As of September 30, 2013, and December 31, 2012, redeemable noncontrolling interests are summarized as follows (in millions):
		September 30,		December 31,
		2013		2012
	Redeemable noncontrolling interest in subsidiaries	$	5.8	$	40.1
	Undistributed earnings	1.3		2.8
	Total redeemable noncontrolling interests	$	7.1	$	42.9

Other_Income_Net_Tables

Other Income, Net (Tables)	9 Months Ended
	Sep. 30, 2013
Other Income, Net
Schedule of components of other income, net	The components of other income, net are as follows (in millions):
		Three months ended					Nine months ended
		September 30,					September 30,
		2013		2012			2013		2012
	Dividend income	$	0.4	$	0.3		$	1.1	$	1
	Interest income	0.1		0.2			0.4		0.4
	Foreign currency gains (losses)	0.3		(0.2		)	0.2		(1.0		)
	Other, net	—		—			0.1		1.8
	Total	$	0.8	$	0.3		$	1.8	$	2.2

Accumulated_Other_Comprehensiv1

Accumulated Other Comprehensive (Loss) Income (Tables)	9 Months Ended
	Sep. 30, 2013
Accumulated Other Comprehensive (Loss) Income
Schedule of the changes in accumulated other comprehensive (loss) income, net of tax	Changes in accumulated other comprehensive (loss) income, net of tax, for the three months ended September 30, 2013 and 2012, are as follows (in millions):
		Three months ended September 30,
		2013									2012
		Unrealized gains									Unrealized gains
		(losses) on			Foreign						(losses) on			Foreign
		available-for-sale			currency						available-for-sale			currency
		securities			items			Total			securities			items			Total
	Beginning balance	$	1.1		$	(2.3	)	$	(1.2	)	$	0.9		$	(1.4	)	$	(0.5	)
	Other comprehensive gain before reclassifications	0.7			—			0.7			0.1			0.3			0.4
	Amounts reclassified from accumulated other comprehensive (loss) income to:
	Investment gains, net	(0.7		)	—			(0.7		)	0.2			—			0.2
	Net current period other comprehensive income	—			—			—			0.3			0.3			0.6
	Ending balance	$	1.1		$	(2.3	)	$	(1.2	)	$	1.2		$	(1.1	)	$	0.1
	Changes in accumulated other comprehensive (loss) income, net of tax, for the nine months ended September 30, 2013 and 2012, are as follows (in millions):
		Nine months ended September 30,
		2013									2012
		Unrealized gains									Unrealized gains
		(losses) on			Foreign						(losses) on			Foreign
		available-for-sale			currency						available-for-sale			currency
		securities			items			Total			securities			items			Total
	Beginning balance	$	1.4		$	(0.8	)	$	0.6		$	0.7		$	(1.2	)	$	(0.5	)
	Other comprehensive gain before reclassifications	0.6			—			0.6			0.6			0.1			0.7
	Amounts reclassified from accumulated other comprehensive (loss) income to:
	Investment gains, net	(0.9		)	—			(0.9		)	(0.1		)	—			(0.1		)
	Other income, net	—			(1.5		)	(1.5		)	—			—			—
	Net current period other comprehensive (loss) income	(0.3		)	(1.5		)	(1.8		)	0.5			0.1			0.6
	Ending balance	$	1.1		$	(2.3	)	$	(1.2	)	$	1.2		$	(1.1	)	$	0.1

Earnings_Per_Share_Tables

Earnings Per Share (Tables)	9 Months Ended
	Sep. 30, 2013
Earnings Per Share
Summary of earnings per share calculation	The following is a summary of the earnings per share calculation for the three and nine months ended September 30, 2013 and 2012 (in millions, except per share data):
			Three months ended					Nine months ended
			September 30,					September 30,
			2013			2012		2013		2012
	Net income attributable to JCG common shareholders		$	32.6		$	25.1	$	76.4	$	71.1
	Basic earnings per share attributable to JCG common shareholders:
	Weighted-average common shares outstanding		184.7			183.4		184.8		183.8
	Basic earnings per share		$	0.18		$	0.14	$	0.41	$	0.39
	Diluted earnings per share attributable to JCG common shareholders:
	Weighted-average common shares outstanding		184.7			183.4		184.8		183.8
	Dilutive effect of stock options, unvested restricted stock and price-vesting units using the treasury stock method		1.7			1.9		1.2		1.3
	Weighted-average diluted common shares outstanding		186.4			185.3		186		185.1
	Diluted earnings per share		$	0.17		$	0.14	$	0.41	$	0.38
	Dividends paid per share		$	0.07		$	0.06	$	0.14	$	0.17
Schedule of anti-dilutive securities that have not been included in the calculation of weighted average diluted shares outstanding	The following stock options, unvested restricted stock and price-vesting units are anti-dilutive and have not been included in the weighted-average diluted shares outstanding calculation (in millions):
			Three months ended				Nine months ended
			September 30,				September 30,
			2013		2012		2013	2012
	Employee stock options		7		9.6		7	9.6
	Other stock options		14		14		14	14
	Unvested restricted stock and price-vesting units		0.2		1.4		1	1.5
Schedule of dividends paid	Dividends paid during the nine months ended September 30, 2013, are summarized as follows:
	Dividend			Date		Date
	per share			declared		paid
	$	0.07		April 18		May 24
	$	0.07		July 22		August 23

Investment_Securities_Details

Investment Securities (Details) (USD $)	3 Months Ended		9 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Dec. 31, 2012
Short-term investments:
Estimated Fair Value	$434.40		$434.40		$350.50
Net gains (losses):
Total	1.6	-0.2	-3.4	-0.7
Fair value of the foreign currency forward contracts	-2.6		-2.6		-0.2
Net losses in net income related to:
Translation gains	3.4	0.1	2.7
Foreign currency forward contracts	-3.7	-0.2	-2.9
Total	-0.3	-0.1	-0.2
Investment gains, net	7.9	7.6	6.4	6.9
Cash flows related to investment securities
Purchases	-21.4	-23.9	-167.8	-96.4
Sales/ Maturities	18.3	11.6	112.2	69.5
Seeded investment products
Net gains (losses):
Total hedged seed investments	16	4.8	19.2	9.4
Net losses in net income related to:
Investment gains, net	17.4	8.7	18	15.3
Futures contracts and index swaps
Net losses in net income related to:
Investment gains, net	-14.4	-5	-22.6	-10.1
Noncontrolling interests in seeded investment products
Net losses in net income related to:
Investment gains, net	2	0.6	2.1	1.7
Deferred compensation plans
Net losses in net income related to:
Investment gains, net	0.7		1.9
Investments in advised mutual funds
Net losses in net income related to:
Investment gains, net	2.2	3.3	7	6.1
Other
Net losses in net income related to:
Investment gains, net				-6.1
Futures contract
Net gains (losses):
Gain (loss) on derivatives not designated as hedging	-13.7	-5	-20.5	-10.1
Index swap
Net gains (losses):
Gain (loss) on derivatives not designated as hedging	-0.7		-2.1
Trading securities (carried at fair value):
Short-term investments:
Estimated Fair Value	411.1		411.1		320.4
Recognized gains on trading securities that were still held as of the reporting date			14.5	13.5
Cash flows related to investment securities
Purchases	-2.1	-16.4	-113.5	-77.9
Sales/ Maturities	2.2	6.9	62.5	51.4
Trading securities (carried at fair value): | Seeded investment products
Short-term investments:
Estimated Fair Value	338.9		338.9		219.5
Net gains (losses):
Total hedged seed investments	15.4	4.8	18.6	9.4
Trading securities (carried at fair value): | Deferred compensation plans
Short-term investments:
Estimated Fair Value	13.8		13.8		11.9
Trading securities (carried at fair value): | Investments in advised mutual funds
Short-term investments:
Estimated Fair Value	58.4		58.4		89
Seeded investment products	257.4		257.4		155.3
Number of portfolios of funds	13		13		18
Trading securities (carried at fair value): | Separately managed accounts
Short-term investments:
Seeded investment products	81.5		81.5		64.2
Number of separately managed accounts	27		27		25
Available-for-sale securities (carried at fair value):
Short-term investments:
Seeded investment products	23.3		23.3		30.1
Available-for-sale securities
Other-than-temporary impairment charges	0	0	0	0
Available-for-Sale Securities
Available-for-Sale Securities, Realized gains	1.8		2.6	0.6
Available-for-Sale Securities, Realized losses	-0.5	-0.6	-1.1	-0.6
Available-for-Sale Securities, Net realized gains (losses)	1.3	-0.6	1.5
Cash flows related to investment securities
Purchases	-0.1	-0.1	-0.4	-0.8
Sales/ Maturities	8.1	2.9	18.2	8
Available-for-sale securities (carried at fair value): | Seeded investment products
Short-term investments:
Estimated Fair Value	23.3		23.3		30.1
Available-for-sale securities
Available-for-sale Securities, Cost basis	21.1		21.1		32.2
Available-for-sale securities, Gross unrealized gains	2.3		2.3		1
Available-for-sale securities, Gross unrealized losses	-0.1		-0.1		-3.1
Available-for-sale securities, Estimated fair value	23.3		23.3		30.1
Net gains (losses):
Total hedged seed investments	0.6		0.6
Available-for-sale securities (carried at fair value): | Investments in advised mutual funds
Short-term investments:
Number of portfolios of funds	37		37		31
Derivative instruments: | Seed capital derivative instruments
Cash flows related to investment securities
Purchases	-19.2	-7.4	-53.9	-17.7
Sales/ Maturities	8	1.8	31.5	10.1
Derivative instruments: | Foreign currency forward contract | Not designated as hedges
Available-for-Sale Securities
Number of positions of derivative	4		4
Notional value of derivative	81.6		81.6
Derivative instruments: | Futures contract | Not designated as hedges
Available-for-Sale Securities
Number of positions of derivative	6		6
Notional value of derivative	84.1		84.1
Derivative instruments: | Index swap | Not designated as hedges
Available-for-Sale Securities
Number of positions of derivative	6		6
Notional value of derivative	$182.50		$182.50

Fair_Value_Measurements_Detail

Fair Value Measurements (Details) (USD $)	Sep. 30, 2013	Dec. 31, 2012
In Millions, unless otherwise specified
Assets
Total investment securities	$434.40	$350.50
Liabilities
Redeemable noncontrolling interests	7.1	42.9
Fair Value, Measurements, Recurring | Fair value
Assets
Cash equivalents	179.3	250.1
Total investment securities	434.4	350.5
Other assets
Deferred compensation plans hedge assets	13.8	11.9
Total assets	613.7	600.6
Liabilities
Current portion of long-term debt	100.1
Long-term debt	507.2	618.3
Foreign currency forward contracts	2.6	0.1
Total liabilities	609.9	618.4
Redeemable noncontrolling interests	7.1	42.9
Fair Value, Measurements, Recurring | Fair value | Seeded investment products
Assets
Trading securities	338.9	219.5
Available-for-sale securities, Estimated Fair Value	23.3	30.1
Fair Value, Measurements, Recurring | Fair value | Investments in advised funds
Assets
Trading securities	58.4	89
Fair Value, Measurements, Recurring | Level 1
Assets
Total investment securities	323.1	182.6
Other assets
Deferred compensation plans hedge assets	13.8	11.9
Total assets	323.1	182.6
Fair Value, Measurements, Recurring | Level 1 | Seeded investment products
Assets
Trading securities	245.6	74.2
Available-for-sale securities, Estimated Fair Value	5.3	7.5
Fair Value, Measurements, Recurring | Level 1 | Investments in advised funds
Assets
Trading securities	58.4	89
Fair Value, Measurements, Recurring | Level 2
Assets
Cash equivalents	179.3	250.1
Total investment securities	111.3	167.9
Other assets
Total assets	290.6	418
Liabilities
Current portion of long-term debt	100.1
Long-term debt	507.2	618.3
Foreign currency forward contracts	2.6	0.1
Total liabilities	609.9	618.4
Fair Value, Measurements, Recurring | Level 2 | Seeded investment products
Assets
Trading securities	93.3	145.3
Available-for-sale securities, Estimated Fair Value	18	22.6
Fair Value, Measurements, Recurring | Level 3
Liabilities
Redeemable noncontrolling interests	$7.10	$42.90

Fair_Value_Measurements_Detail1

Fair Value Measurements (Details 2) (USD $)	9 Months Ended		9 Months Ended	12 Months Ended	3 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Dec. 31, 2012	Mar. 31, 2013
			Perkins	Perkins	INTECH
Significant unobservable inputs
Maturity period of short-term securities valued at amortized costs	60 days
Transfers from Level 2 to Level 1	$13.40	$4.90
Discount rate					13.00%
Terminal multiple					7.5
Period of revenues			12 months
Revenue multiples			3.39	3.43

Fair_Value_Measurements_Detail2

Fair Value Measurements (Details 3) (USD $)	3 Months Ended		9 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Changes in fair value
Distributions			($1.60)	($1.80)
Purchase of redeemable noncontrolling interests			-0.3	-0.6
Change in fair value			1.7	22.1
Level 3 | Fair Value, Measurements, Recurring | Redeemable noncontrolling interests
Changes in fair value
Balance at the beginning of the period	40.3	65.6	42.9	85.4
Distributions	-0.1	-1.3	-4.3	-7.3
Current earnings	0.7	1.5	2.8	4.9
Purchase of redeemable noncontrolling interests	-33.8	-2.6	-33.8	-5.9
Vesting of noncontrolling interests			1.2	1.2
Change in fair value		-7	-1.7	-22.1
Balance at the end of the period	7.1	56.2	7.1	56.2
Level 3 | Fair Value, Measurements, Recurring | Other investment securities
Changes in fair value
Balance at the beginning of the period				3.2
Sale of investments				($3.20)

Debt_Details

Debt (Details) (USD $)

0 Months Ended

3 Months Ended

9 Months Ended

0 Months Ended

0 Months Ended

3 Months Ended

9 Months Ended

0 Months Ended

1 Months Ended

3 Months Ended

9 Months Ended

9 Months Ended

In Millions, except Per Share data, unless otherwise specified

Aug. 23, 2013

24-May-13

Dec. 31, 2012

Sep. 30, 2013

Sep. 30, 2012

Sep. 30, 2013

Sep. 30, 2012

Sep. 30, 2013

Dec. 31, 2012

Sep. 30, 2013

Dec. 31, 2012

Aug. 30, 2013

Sep. 30, 2013

Dec. 31, 2012

Sep. 30, 2013

Dec. 31, 2012

Sep. 30, 2013

Dec. 31, 2012

Sep. 30, 2013

Dec. 31, 2012

Sep. 30, 2013

Dec. 31, 2012

Sep. 30, 2013

Dec. 31, 2012

Jun. 14, 2013

Sep. 30, 2013

Sep. 30, 2013

Jun. 13, 2013

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2013

Aug. 23, 2013

Jun. 14, 2013

Jul. 31, 2009

Sep. 30, 2013

Jun. 30, 2013

Sep. 30, 2012

Sep. 30, 2013

Sep. 30, 2012

Dec. 31, 2012

Sep. 30, 2013

Dec. 31, 2012

Sep. 30, 2013

Dec. 31, 2012

Sep. 30, 2013

Carrying value

Carrying value

Fair value

Fair value

6.700% Senior Notes due 2017

6.700% Senior Notes due 2017

6.700% Senior Notes due 2017

6.700% Senior Notes due 2017

6.700% Senior Notes due 2017

6.700% Senior Notes due 2017

6.700% Senior Notes due 2017

6.119% Senior Notes due 2014

6.119% Senior Notes due 2014

6.119% Senior Notes due 2014

6.119% Senior Notes due 2014

6.119% Senior Notes due 2014

6.119% Senior Notes due 2014

2018 Notes

2018 Notes

2018 Notes

2018 Notes

2018 Notes

2018 Notes

2018 Notes

2014 Notes

2014 Notes

2014 Notes

2014 Notes

2014 Notes

2014 Notes

2014 Notes

2014 Notes

2014 Notes

2014 Notes

2014 Notes

2014 Notes

2014 Notes

Credit Facility

Carrying value

Carrying value

Fair value

Fair value

Carrying value

Carrying value

Fair value

Fair value

Item

D

Maximum

Carrying value

Fair value

Carrying value

Carrying value

Fair value

Fair value

Components of debt

Interest rate (as a percent)

6.70%

6.70%

6.12%

6.12%

0.75%

0.75%

3.25%

3.25%

3.25%

3.25%

Total

$543

$545.10

$607.30

$618.30

$344.40

$352.20

$384.90

$401.60

$38.90

$38.90

$39.80

$40.70

$102

$102.70

$122.30

$57

$154

$60.30

$176

Less: Current maturities

-95.9

-95.9

-95.9

-100.1

Total long-term debt

545.1

447.1

447.1

447.1

545.1

507.2

618.3

Other Disclosures

Aggregate principal amount of notes repurchased

8

Cash paid for repurchase of notes

8.9

65.8

8.9

Loss recognized on repurchase of notes

0.9

Aggregate principal outstanding

60

60

60

Loss on early extinguishment of debt

0.9

13.5

7.2

12.6

Amount of reduction in equity related to the retirement of conversion feature of the exchanged 2014 Notes

2

2

Conversion rate

0.0921

0.0754

0.0713

Adjusted conversion price per share of common stock (in dollars per share)

$10.86

$13.26

Conversion price premium percentage relative to the closing price

25.00%

Share price (in dollars per share)

$8.69

Number of trading days within 30 consecutive trading days required per the conversion eligibility terms, minimum

20

Number of consecutive trading days required per the conversion eligibility terms

30 days

Percentage of the conversion price that the last reported sales price of the entity's common stock must equal or exceed as per conversion eligibility terns, minimum

130.00%

Number of business days after 5 consecutive trading days

5 days

Number of consecutive trading days required as per the conversion eligibility terms

5 days

Percentage of the last reported sale price of the common stock as per conversion eligibility terms, maximum

98.00%

Rate used to discount the future contractual cash flows of the initial liability component (as a percent)

3.50%

Face value

116.6

116.6

170

Estimated accretion period of liability component of convertible liability

5 years

Initial equity component

14.6

Increased conversion price per share of common stock (in dollars per share)

$12.60

Number of convertible note hedge and warrant transactions instruments

2

Call options cost

16.1

16.1

Proceeds from issuance of stock warrants

10.5

10.5

Amount of reduction in equity related to call options and warrants

5.6

Quarterly cash dividend per share paid (in dollars per share)

$0.07

$0.07

$0.06

$0.07

$0.06

$0.14

$0.17

$0.07

Debt instrument adjustment with future dividend payment minimum (in dollars per share)

$0.04

$0.04

Unamortized discount

13.9

13.9

3

3

Unamortized debt discount derecognized

7.4

Capitalized debt issuance costs derecognized

0.6

Interest expense

1

1.1

1.5

3.9

9.3

11.6

Credit facility, maximum borrowing capacity

250

Credit facility covenant terms, financing leverage ratio, maximum

3

Credit facility covenant terms, interest coverage ratio, minimum

4

Borrowings under the Credit Facility

0

Capital lease obligations, carrying values

2.9

2.1

2.1

Amount exchanged for 2018 Notes

$110

Income_Taxes_Details

Income Taxes (Details) (USD $)	3 Months Ended		9 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Income Taxes
Provision for income taxes	$21.70	$17	$53	$45.40
Provision for income taxes (as a percent)	37.80%	38.00%	39.20%	36.50%
Increase in effective tax rate (as a percent)			2.70%
Reserves for income tax contingencies	6		6
Accrual of additional reserves for income tax contingencies	0.3
Net tax expense related to accrued additional reserves in income tax contingency reserves	0.2
Decrease in income tax contingency reserves due to the expiration of statutes of limitations and audit settlements	0.1		0.7
Net tax benefit related to change in income tax contingency reserves	0.1		0.5
Anticipated decrease in income tax contingency reserves in the next 12 months	$1.20		$1.20

Noncontrolling_Interests_Detai

Noncontrolling Interests (Details) (USD $)	3 Months Ended		9 Months Ended		3 Months Ended		9 Months Ended		3 Months Ended		9 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Dec. 31, 2012
				Item	Seeded investment products	Seeded investment products	Seeded investment products	Seeded investment products	Subsidiaries	Subsidiaries	Subsidiaries	Subsidiaries	INTECH and Perkins employees	INTECH and Perkins employees
Noncontrolling interests in net income consist
Nonredeemable noncontrolling interests					$2	$0.60	$2.10	$1.70	$0.30	$0.50	$0.80	$1.40
Redeemable noncontrolling interests									0.7	1.5	2.8	4.9
Total noncontrolling interests in net income	3	2.6	5.7	8
Number of subsidiaries having employee ownership interest that are not subject to redemption rights				2
Total nonredeemable noncontrolling interests	38.1		38.1		33.9	12.6	33.9	12.6					4.2	4.8
Rollforward of noncontrolling interests in consolidated seed investment products
Balance at beginning of period			17.2		26.1	35.6	12.4	29.2					4.2	4.8
Changes in market value					2	0.6	2.1	1.7
Changes in ownership					5.8	-23.6	19.4	-18.3
Balance at end of period	$38.10		$38.10		$33.90	$12.60	$33.90	$12.60					$4.20	$4.80

Noncontrolling_Interests_Detai1

Noncontrolling Interests (Details 2) (USD $)	0 Months Ended
In Millions, unless otherwise specified	Feb. 02, 2013	Sep. 30, 2013	Aug. 31, 2013	Dec. 31, 2012
Redeemable Noncontrolling Interests
Undistributed earnings attributable to redeemable noncontrolling interests		$1.30		$2.80
Redeemable noncontrolling interests		7.1		42.9
INTECH Founders
Redeemable Noncontrolling Interests
Redeemable noncontrolling interests		5.2		4.8
Remaining interest (as a percent)		1.00%		1.00%
INTECH employees
Redeemable Noncontrolling Interests
Noncontrolling ownership interest subject to redemption rights (as a percent)		0.00%		0.00%
Perkins
Redeemable Noncontrolling Interests
Redeemable noncontrolling interests		0.6		35.3
Noncontrolling ownership interest subject to redemption rights (as a percent)	22.20%
Percentage of interests that noncontrolling owners have right to put	98.00%
Noncontrolling ownership units redeemed at fair value			33.8
Perkins | Perkins senior profit interests
Redeemable Noncontrolling Interests
Portion of taxable income awards program receives	5.00%
INTECH and Perkins
Redeemable Noncontrolling Interests
Redeemable noncontrolling interests		$5.80		$40.10

LongTerm_Incentive_Compensatio1

Long-Term Incentive Compensation (Details) (USD $)	3 Months Ended		9 Months Ended
In Millions, except Per Share data, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Long-term incentive compensation expense
Long-term incentive awards granted			$55.80
Vesting period			4 years
Long-term incentive compensation expense related to mark-to-market adjustments	15.8	16.2	45.3	51
Restricted stock awards
Long-term incentive compensation expense
Long-term incentive awards granted			33.4
Number of shares granted (in shares)			3.5
Weighted average price per share (in dollars per share)			$9.55
Mutual fund share awards
Long-term incentive compensation expense
Long-term incentive awards granted			22.2
Stock Options
Long-term incentive compensation expense
Long-term incentive awards granted			0.2
Deferred compensation plans
Long-term incentive compensation expense
Long-term incentive compensation expense related to mark-to-market adjustments	$2.40	$1.70	$5.70	$4.30

Other_Income_Net_Details

Other Income, Net (Details) (USD $)	3 Months Ended		9 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Other Income, Net
Dividend income	$0.40	$0.30	$1.10	$1
Interest income	0.1	0.2	0.4	0.4
Foreign currency gains (losses)	0.3	-0.2	0.2	-1
Other, net			0.1	1.8
Total	$0.80	$0.30	$1.80	$2.20

Accumulated_Other_Comprehensiv2

Accumulated Other Comprehensive (Loss) Income (Details) (USD $)	3 Months Ended		9 Months Ended		3 Months Ended		9 Months Ended		3 Months Ended	9 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Jun. 30, 2013
					Unrealized gains (losses) on available-for-sale securities	Unrealized gains (losses) on available-for-sale securities	Unrealized gains (losses) on available-for-sale securities	Unrealized gains (losses) on available-for-sale securities	Foreign currency items	Foreign currency items	Foreign currency items	Foreign currency items
Changes in accumulated other comprehensive (loss) income, net of tax
Beginning balance	($1.20)	($0.50)	$0.60	($0.50)	$1.10	$0.90	$1.40	$0.70	($1.40)	($0.80)	($1.20)	($2.30)
Other comprehensive gain before reclassifications	0.7	0.4	0.6	0.7	0.7	0.1	0.6	0.6	0.3		0.1
Amounts reclassified from accumulated other comprehensive (loss) income to:
Investment gains, net	-0.7	0.2	-0.9	-0.1	-0.7	0.2	-0.9	-0.1
Other income, net			-1.5							-1.5
Net current period other comprehensive (loss) income		0.6	-1.8	0.6		0.3	-0.3	0.5	0.3	-1.5	0.1
Ending balance	($1.20)	$0.10	($1.20)	$0.10	$1.10	$1.20	$1.10	$1.20	($1.10)	($2.30)	($1.10)	($2.30)

Earnings_Per_Share_Details

Earnings Per Share (Details) (USD $)	0 Months Ended							3 Months Ended		9 Months Ended
In Millions, except Per Share data, unless otherwise specified	Oct. 21, 2013	Aug. 23, 2013	Jul. 22, 2013	24-May-13	Apr. 18, 2013	Dec. 31, 2012	Dec. 10, 2012	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Earnings Per Share
Net income attributable to JCG common shareholders								$32.60	$25.10	$76.40	$71.10
Basic earnings per share attributable to JCG common shareholders:
Weighted average common shares outstanding								184.7	183.4	184.8	183.8
Basic earnings per share (in dollars per share)								$0.18	$0.14	$0.41	$0.39
Diluted earnings per share attributable to JCG common shareholders:
Weighted average common shares outstanding								184.7	183.4	184.8	183.8
Dilutive effect of stock options, unvested restricted stock and price-vesting units using the treasury stock method								1.7	1.9	1.2	1.3
Weighted average diluted common shares outstanding								186.4	185.3	186	185.1
Diluted earnings per share (in dollars per share)								$0.17	$0.14	$0.41	$0.38
Dividends paid per share		$0.07		$0.07		$0.06		$0.07	$0.06	$0.14	$0.17
Dividends
Cash dividend declared (in dollars per share)	$0.07		$0.07		$0.07		$0.06
Dividends paid per share		$0.07		$0.07		$0.06		$0.07	$0.06	$0.14	$0.17
Cash dividend increase (in dollars per share)					$0.01
Cash dividend increase (as a percent)					17.00%
Expected annualized dividend rate (in dollars per share)										$0.28
Employee stock options
Anti-dilutive securities that have not been included in the calculation of weighted average diluted shares outstanding
Number of anti-dilutive securities that have not been included in the calculation of weighted average diluted shares outstanding								7	9.6	7	9.6
Other stock options
Anti-dilutive securities that have not been included in the calculation of weighted average diluted shares outstanding
Number of anti-dilutive securities that have not been included in the calculation of weighted average diluted shares outstanding								14	14	14	14
Restricted stock awards
Anti-dilutive securities that have not been included in the calculation of weighted average diluted shares outstanding
Number of anti-dilutive securities that have not been included in the calculation of weighted average diluted shares outstanding								0.2	1.4	1	1.5

Litigation_and_Other_Regulator1

Litigation and Other Regulatory Matters (Details) (Pending litigation matters, USD $)	9 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2013
Pending litigation matters
Litigation and Other Regulatory Matters
Litigation accrual	$0.50
Change in litigation accrual	$0