Janus Capital (JNS) 10-Q 23 Oct 14 2014 Q3 Quarterly report Financial data

Document_and_Entity_Informatio

Document and Entity Information	9 Months Ended
	Sep. 30, 2014	Oct. 17, 2014
Document and Entity Information	'	'
Entity Registrant Name	'JANUS CAPITAL GROUP INC	'
Entity Central Index Key	'0001065865	'
Document Type	'10-Q	'
Document Period End Date	30-Sep-14	'
Amendment Flag	'false	'
Current Fiscal Year End Date	'--12-31	'
Entity Current Reporting Status	'Yes	'
Entity Filer Category	'Large Accelerated Filer	'
Entity Common Stock, Shares Outstanding	'	185,995,017
Document Fiscal Year Focus	'2014	'
Document Fiscal Period Focus	'Q3	'

CONDENSED_CONSOLIDATED_BALANCE

CONDENSED CONSOLIDATED BALANCE SHEETS (USD $)	Sep. 30, 2014	Dec. 31, 2013
In Millions, unless otherwise specified
Current assets:	'	'
Cash and cash equivalents	$434.90	$344.50
Investment securities	341.2	485.5
Accounts receivable	116.2	108.8
Other current assets	51.4	52
Total current assets	943.7	990.8
Other assets:	'	'
Property and equipment, net	29.8	29.9
Intangible assets, net	1,222.70	1,230.10
Goodwill	488.2	488.2
Non-current assets	7.6	8.3
Total assets	2,692	2,747.30
Current liabilities:	'	'
Accounts payable	8.1	4.1
Accrued compensation and benefits	113.6	122.7
Current portion of long-term debt	'	96.9
Other accrued liabilities	53.9	78
Total current liabilities	175.6	301.7
Other liabilities:	'	'
Long-term debt	449.8	447.7
Deferred income taxes, net	463	447.7
Other non-current liabilities	30.9	32.4
Total liabilities	1,119.30	1,229.50
Commitments and contingencies	'	'
Redeemable noncontrolling interests	4.8	7.3
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; 186,386,184 and 188,603,875 shares outstanding, respectively)	1.9	1.9
Retained earnings	1,523.30	1,496
Accumulated other comprehensive loss, net of tax	-1.1	-1.1
Total JCG stockholders' equity	1,524.10	1,496.80
Noncontrolling interests	43.8	13.7
Total equity	1,567.90	1,510.50
Total liabilities and equity	$2,692	$2,747.30

CONDENSED_CONSOLIDATED_BALANCE1

CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $)	Sep. 30, 2014	Dec. 31, 2013
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	186,386,184	188,603,875

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, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Revenues:	'	'	'	'
Investment management fees	$213.30	$204	$632	$605
Performance fees	-14	-22	-47.2	-63.7
Shareowner servicing fees and other	37.7	35.7	113.6	106.4
Total	237	217.7	698.4	647.7
Operating expenses:	'	'	'	'
Employee compensation and benefits	82.2	73.3	240.5	222
Long-term incentive compensation	11.6	15.8	36.1	45.3
Marketing and advertising	4.1	4.6	13.6	14.3
Distribution	33.2	30.8	98.5	94
Depreciation and amortization	6.2	7.1	19	21.9
General, administrative and occupancy	28.1	27.1	81.5	78.1
Total	165.4	158.7	489.2	475.6
Operating income	71.6	59	209.2	172.1
Interest expense	-7.6	-9.5	-25.9	-31.7
Investment gains, net	1.3	7.9	1.1	6.4
Other (expense) income, net	-1.1	0.8	-0.1	1.8
Loss on early extinguishment of debt	'	-0.9	'	-13.5
Income before taxes	64.2	57.3	184.3	135.1
Income tax provision	-23.6	-21.7	-75.7	-53
Net income	40.6	35.6	108.6	82.1
Noncontrolling interests	0.3	-3	-0.9	-5.7
Net income attributable to JCG common shareholders	40.9	32.6	107.7	76.4
Net income attributable to JCG common shareholders:	'	'	'	'
Basic (in dollars per share)	$0.22	$0.18	$0.57	$0.41
Diluted (in dollars per share)	$0.22	$0.17	$0.57	$0.41
Other comprehensive loss, net of tax:	'	'	'	'
Net unrealized gain on available-for-sale securities	'	0.7	2.3	0.6
Reclassification for items included in net income	-1.8	-0.7	-2.3	-2.4
Total other comprehensive loss, net of tax	-1.8	'	'	-1.8
Comprehensive income	38.8	35.6	108.6	80.3
Comprehensive loss (income) attributable to noncontrolling interests	0.3	-3	-0.9	-5.7
Comprehensive income attributable to JCG common shareholders	$39.10	$32.60	$107.70	$74.60

CONDENSED_CONSOLIDATED_STATEME1

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $)	9 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013
Operating activities:	'	'
Net income	$108.60	$82.10
Adjustments to net income:	'	'
Depreciation and amortization	19	21.9
Deferred income taxes	29.2	13.5
Amortization of stock-based compensation	11.7	18.5
Investment gains, net	-1.1	-6.4
Amortization of debt discounts, premiums and deferred issuance costs	7	7.9
Loss on early extinguishment of debt	'	13.5
Payment of deferred commissions, net	-4.5	-3.3
Other, net	0.2	-1
Changes in working capital items:	'	'
Accounts receivable	-7.3	2.6
Other current assets	-29	-6.6
Accounts payable and accrued compensation payable	8	-5.1
Other current and non-current liabilities	-11.8	-5.6
Net operating activities	130	132
Investing activities:	'	'
Purchase of property and equipment	-7.5	-5
Purchases and settlements of investment securities	-159.4	-167.8
Proceeds from sales, settlements and maturities of investment securities	331.5	112.2
Net investing activities	164.6	-60.6
Financing activities:	'	'
Repayment of long-term debt	-98.9	-8.9
Proceeds from the issuance of stock warrants	'	10.5
Purchase of convertible note hedge	'	-16.1
Debt issuance costs	'	-3.3
Purchase of noncontrolling interests	-1.5	-34.1
Distributions to noncontrolling interests	-1.6	-5.9
Proceeds from stock option exercises and employee stock purchases	3.7	7.1
Excess tax benefit from equity-based compensation	1	1.6
Principal payments under capital lease obligations	-1	-0.8
Repurchase of common stock	-62.2	-22.2
Dividends paid to JCG shareholders	-43.6	-26.5
Net financing activities	-204.1	-98.6
Cash and cash equivalents:	'	'
Effect of exchange rate changes	-0.1	-1.6
Net change	90.4	-28.8
At beginning of period	344.5	387
At end of period	434.9	358.2
Supplemental cash flow information:	'	'
Cash paid for interest	15.6	18.4
Cash paid for income taxes, net of refunds	$74.10	$46.20

CONDENSED_CONSOLIDATED_STATEME2

CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY (USD $)	Common Stock [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Noncontrolling Interest [Member]	Total
In Millions, except Share data, unless otherwise specified
Balance at Dec. 31, 2012	$1.90	$1,415.40	$0.60	$17.20	$1,435.10
Balance (in shares) at Dec. 31, 2012	187,500,000	'	'	'	'
Increase (Decrease) in Stockholders' Equity	'	'	'	'	'
Net income	'	76.4	'	0.8	77.2
Other comprehensive income (loss)	'	'	-1.8	'	-1.8
Amortization of stock-based compensation	'	16.1	'	1.7	17.8
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 nonredeemable 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 to JCG common shareholders	'	-26.5	'	'	-26.5
Balance at Sep. 30, 2013	1.9	1,475.10	-1.2	38.1	1,513.90
Balance (in shares) at Sep. 30, 2013	189,300,000	'	'	'	'
Balance at Dec. 31, 2013	1.9	1,496	-1.1	13.7	1,510.50
Balance (in shares) at Dec. 31, 2013	188,600,000	'	'	'	188,603,875
Increase (Decrease) in Stockholders' Equity	'	'	'	'	'
Net income	'	107.7	'	0.7	108.4
Amortization of stock-based compensation	'	20.1	'	1.2	21.3
Issuance and forfeitures of restricted stock awards, net (in shares)	2,600,000	'	'	'	'
Stock option exercises and employee stock purchases	'	3.7	'	'	3.7
Stock option exercises and employee stock purchases (in shares)	500,000	'	'	'	'
Change in noncontrolling interests in consolidated investment products	'	'	'	30	30
Distributions to noncontrolling interests	'	'	'	-0.9	-0.9
Change in fair value of redeemable noncontrolling interests	'	1.6	'	'	1.6
Purchase of noncontrolling interests	'	'	'	-0.9	-0.9
Common stock repurchases	'	-62.2	'	'	-62.2
Common stock repurchases (in shares)	-5,300,000	'	'	'	'
Common stock dividends to JCG common shareholders	'	-43.6	'	'	-43.6
Balance at Sep. 30, 2014	$1.90	$1,523.30	($1.10)	$43.80	$1,567.90
Balance (in shares) at Sep. 30, 2014	186,400,000	'	'	'	186,386,184

BASIS_OF_PRESENTATION

BASIS OF PRESENTATION	9 Months Ended
	Sep. 30, 2014
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 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 and the Company has determined that there were no subsequent events that require disclosure other than the items set forth in Notes 7 and 12. The Company operates one business segment, its Investment Management Operations. These interim condensed consolidated financial statements should be read in conjunction with JCG’s Annual Report on Form 10-K for the year ended December 31, 2013.
	The accompanying interim 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, 2013.
	Recent Accounting Pronouncements
	In May 2014, the Financial Accounting Standards Board issued a new revenue recognition standard. The standard’s core principle is that a company will recognize revenue to depict the transfer of goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. In addition, the standard specifies the accounting for certain costs to obtain or fulfill a contract with a customer and expands disclosure requirements for revenue recognition. The standard is effective for annual reporting periods beginning after December 15, 2016, including interim periods within that reporting period. The Company is evaluating the effect of adopting this new accounting standard.

INVESTMENT_SECURITIES

INVESTMENT SECURITIES	9 Months Ended
	Sep. 30, 2014
INVESTMENT SECURITIES	'
INVESTMENT SECURITIES	'
	Note 2 — Investment Securities
	JCG’s investment securities as of September 30, 2014, and December 31, 2013, are summarized as follows (in millions):
		September 30,			December 31,
		2014			2013
	Trading securities:
	Seeded investment products	$	315.9		$	312.9
	Investments in advised mutual funds	4.3			45.5
	Investments related to deferred compensation plans	12.5			14.9
	Total trading securities	332.7			373.3
	Available-for-sale securities:
	Seeded investment products	8.5			10.7
	Debt securities	—			101.5
	Total available-for-sale securities	8.5			112.2
	Total investment securities	$	341.2		$	485.5
	Trading Securities
	Seeded investment products represented $247.2 million in 17 mutual funds advised by the Company and $68.7 million in 30 separately managed accounts at September 30, 2014. Seeded investment products represented $230.0 million in 12 mutual funds advised by the Company and $82.9 million in 28 separately managed accounts at December 31, 2013.
	The Company recognized $4.7 million and $14.5 million of net investment gains related to trading securities still held as of September 30, 2014 and 2013, respectively.
	Available-for-Sale Securities
	Seeded investment products advised by the Company designated as available-for-sale securities represented $8.5 million held in 38 mutual funds and $10.7 million held in 34 mutual funds at September 30, 2014, and December 31, 2013, respectively.
	During the three and nine months ended September 30, 2014, one debt security with a principal value of $12.0 million and nine debt securities with an aggregate principal value of $100.0 million matured, respectively.
	The following is a summary of available-for-sale securities at September 30, 2014, and December 31, 2013 (in millions):
		September 30, 2014
					Gross unrealized						Foreign
					investment						currency			Estimated		Carrying
		Cost			Gains			Losses			translation			fair value		value
	Available-for-sale securities:
	Seeded investment products	$	8.2		$	0.5		$	(0.1	)	$	(0.1	)	$	8.5	$	8.5
		December 31, 2013
					Gross unrealized						Foreign
					investment						currency			Estimated		Carrying
		Cost			Gains			Losses			translation			fair value		value
	Available-for-sale securities:
	Seeded investment products	$	9.9		$	0.9		$	—		$	(0.1	)	$	10.7	$	10.7
	Debt securities	101.6			—			(0.1		)	—			101.5		101.5
	Total available-for-sale securities	$	111.5		$	0.9		$	(0.1	)	$	(0.1	)	$	112.2	$	112.2
	The Company reviewed the gross unrealized losses on available-for-sale securities and determined that the losses were not other-than-temporary. No other-than-temporary impairment charges were recognized in the nine months ended September 30, 2014 or 2013.
	Realized gains and losses related to the disposition of seeded investment products classified as available-for-sale securities were recognized within investment gains, net on JCG’s 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, 2014 and 2013 (in millions):
		Three months ended						Nine months ended
		September 30,						September 30,
		2014			2013			2014			2013
	Realized gains	$	2.6		$	1.8		$	2.8		$	2.6
	Realized losses	—			(0.5		)	(0.1		)	(1.1		)
	Net realized gains	$	2.6		$	1.3		$	2.7		$	1.5
	Derivative Instruments
	The Company maintains an economic hedge program that uses derivative instruments to hedge against market volatility of certain seed investments. Fluctuations in equity markets, debt markets and foreign currency markets are hedged by using index swaps, index futures and foreign currency forward contracts.
	JCG was party to the following derivative instruments as of September 30, 2014, and December 31, 2013:
		September 30, 2014					December 31, 2013
		Number of		Notional value			Number of		Notional value
		contracts		(in millions)			contracts		(in millions)
	Index swaps	4		$	55.5		6		$	184.3
	Index futures	6		$	89.8		6		$	66.6
	Foreign currency forward contracts	6		$	3.2		6		$	93.6
	The above derivative instruments are not designated as hedges for accounting purposes. Changes in fair value of the index swaps and index futures are recognized in investment gains, net on JCG’s Condensed Consolidated Statements of Comprehensive Income while changes in the fair value of the foreign currency forward contracts are recognized in other (expense) income, net on JCG’s Condensed Consolidated Statements of Comprehensive Income.
	Index swaps are subject to a master netting arrangement. The values of the individual index swap contracts, including any associated cash collateral, are combined and are included on a net basis in other current assets on JCG’s Condensed Consolidated Balance Sheets. Index futures are also subject to a master netting arrangement and are presented in the same manner as the index swaps. Foreign currency forward contracts are not subject to a master netting arrangement, and as such, fair values of individual contracts are not netted and are included separately within either other current assets or other accrued liabilities on JCG’s Condensed Consolidated Balance Sheets.
	The Company posted $2.1 million and $4.8 million in cash collateral with the counterparty of the index futures as of September 30, 2014, and December 31, 2013, respectively. The cash collateral is included in other current assets on JCG’s Condensed Consolidated Balance Sheets.
	The following tables illustrate the effect of offsetting derivative instruments on JCG’s Condensed Consolidated Balance Sheets as of September 30, 2014, and December 31, 2013 (in millions):
		September 30, 2014
					Gross amounts
		Gross amounts			offset			Net amounts
	Assets:
	Index futures	$	0.9		$	—		$	0.9
		December 31, 2013
					Gross amounts
	Gross amounts			offset			Net amounts
Assets:
Index swaps	$	0.1		$	(0.1	)	$	—
Index futures	0.9			(0.4		)	0.5
Total	$	1		$	(0.5	)	$	0.5
Liabilities:
Index swaps	$	1.5		$	(1.5	)	$	—
Index futures	0.4			(0.4		)	—
Foreign currency forward contracts	1.5			—			1.5
Total	$	3.4		$	(1.9	)	$	1.5
JCG recognized the following net gains (losses) on hedged seed investments and net gains (losses) on associated index futures and index swaps for the three and nine months ended September 30, 2014 and 2013 (in millions):
	Three months ended						Nine months ended
	September 30,						September 30,
	2014			2013			2014			2013
Hedged seed investments classified as trading securities	$	(2.1	)	$	15.4		$	4.4		$	18.6
Hedged seed investments classified as available-for-sale securities	—			0.6			3.2			0.6
Total hedged seed investments	(2.1		)	16			7.6			19.2
Index futures	(0.8		)	(13.7		)	(5.2		)	(20.5		)
Index swaps	1.7			(0.7		)	(3.1		)	(2.1		)
Total	$	(1.2	)	$	1.6		$	(0.7	)	$	(3.4	)
JCG recognized the following net (losses) gains on hedged seed investments denominated in a foreign currency and net gains (losses) on associated foreign currency forward contracts for the three and nine months ended September 30, 2014 and 2013 (in millions):
	Three months ended						Nine months ended
	September 30,						September 30,
	2014			2013			2014			2013
Net (losses) gains in net income related to:
Foreign currency translation	$	(0.7	)	$	3.4		$	(1.7	)	$	2.7
Foreign currency forward contracts	0.4			(3.7		)	1.2			(2.9		)
Total	$	(0.3	)	$	(0.3	)	$	(0.5	)	$	(0.2	)
Investment Gains, Net
Investment gains, net on JCG’s Condensed Consolidated Statements of Comprehensive Income included the following for the three and nine months ended September 30, 2014 and 2013  (in millions):
	Three months ended						Nine months ended
	September 30,						September 30,
	2014			2013			2014			2013
Seeded investment products	$	1		$	17.4		$	8.9		$	18
Noncontrolling interests in seeded investment products	(0.6		)	2			(0.2		)	2.1
Investments in advised mutual funds	(0.1		)	2.2			(0.1		)	7
Index swaps and index futures	0.9			(14.4		)	(8.3		)	(22.6		)
Economic hedge for deferred compensation plans	0.1			0.7			0.8			1.9
Investment gains, net	$	1.3		$	7.9		$	1.1		$	6.4
Purchases, Sales, Settlements and Maturities
Cash flows related to investment securities for the three and nine months ended September 30, 2014 and 2013, are summarized as follows (in millions):
	Three months ended September 30,
	2014						2013
	Purchases			Sales,			Purchases			Sales,
	and			settlements and			and			settlements and
	settlements			maturities			settlements			maturities
Trading securities	$	(106.0	)	$	27.3		$	(2.1	)	$	2.2
Available-for-sale securities	—			76.9			(0.1		)	8.1
Derivative instruments:
Seed capital economic hedge	(3.6		)	5.3			(19.2		)	8
Total cash flows	$	(109.6	)	$	109.5		$	(21.4	)	$	18.3
	Nine months ended September 30,
	2014						2013
	Purchases			Sales,			Purchases			Sales,
	and			settlements and			and			settlements and
	settlements			maturities			settlements			maturities
Trading securities	$	(138.1	)	$	143.5		$	(113.5	)	$	62.5
Available-for-sale securities	(0.2		)	174.8			(0.4		)	18.2
Derivative instruments:
Seed capital economic hedge	(21.1		)	13.2			(53.9		)	31.5
Total cash flows	$	(159.4	)	$	331.5		$	(167.8	)	$	112.2
During the third quarter 2014, seeding of investment products included a $100.0 million investment in the Global Unconstrained Bond strategy. The investment included $48.0 million and $52.0 million allocated to JCG’s domestic and international trusts, respectively.

FAIR_VALUE_MEASUREMENTS

FAIR VALUE MEASUREMENTS	9 Months Ended
	Sep. 30, 2014
FAIR VALUE MEASUREMENTS	'
FAIR VALUE MEASUREMENTS	'
	Note 3 — 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, 2014 (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	$	—		$	275.9		$	—		$	275.9
	Index futures	0.9			—			—			0.9
	Trading securities:
	Seeded investment products	159.5			156.4			—			315.9
	Investments in advised mutual funds	4.3			—			—			4.3
	Investments related to deferred compensation plans	12.5			—			—			12.5
	Available-for-sale securities:
	Seeded investment products	8.5			—			—			8.5
	Total investment securities	184.8			156.4			—			341.2
	Total assets	$	185.7		$	432.3		$	—		$	618.0
	Liabilities:
	Long-term debt	$	—		$	548.6		$	—		$	548.6
	Redeemable noncontrolling interests	$	—		$	—		$	4.8		$	4.8
	The following table presents assets, liabilities and redeemable noncontrolling interests measured or disclosed at fair value on a recurring basis as of December 31, 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	$	—		$	199.0		$	—		$	199.0
	Index swaps	—			0.1			—			0.1
	Index futures	—			0.9			—			0.9
	Trading securities:
	Seeded investment products	265.9			47.0			—			312.9
	Investments in advised mutual funds	45.5			—			—			45.5
	Investments related to deferred compensation plans	14.9			—			—			14.9
	Available-for-sale securities:
	Seeded investment products	10.7			—			—			10.7
	Debt securities	—			101.5			—			101.5
	Total investment securities	337.0			148.5			—			485.5
	Total assets	$	337.0		$	348.5		$	—		$	685.5
	Liabilities:
	Current portion of long-term debt	$	—		$	101.3		$	—		$	101.3
	Long-term debt	—			532.5			—			532.5
	Index swaps	—			1.5			—			1.5
	Index futures	—			0.4			—			0.4
	Foreign currency forward contracts	—			1.5			—			1.5
	Total liabilities	$	—		$	637.2		$	—		$	637.2
	Redeemable noncontrolling interests	$	—		$	—		$	7.3		$	7.3
	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. 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 are recognized at the end of each reporting period. Transfers from Level 1 and Level 2 classifications for the nine months ended September 30, 2014 and 2013, are summarized as follows (in millions):
		September 30,
		2014			2013
	Transfers from Level 1 to Level 2	$	5.5		$	—
	Transfers from Level 2 to Level 1	$	0.4		$	13.4
	JCG’s Level 3 recurring fair value measurements represent redeemable noncontrolling interests in INTECH Investment Management LLC (“INTECH”) as of September 30, 2014.
	Redeemable noncontrolling interests in INTECH are measured at fair value on a quarterly basis or more frequently if events or circumstances indicate that a material change in the fair value of INTECH has occurred. The fair value of INTECH is determined using a relative value methodology that incorporates observable metrics from publicly traded peer companies as valuation comparables, and adjustments related to investment performance and changes in assets under management. The relative value analysis is prepared internally within JCG’s finance organization by personnel with appropriate valuation experience and credentials. In preparing the analysis, JCG benchmarks valuation metrics such as multiples of earnings before interest expense, taxes, depreciation and amortization (“EBITDA”) against current market observables and recent market transactions of a similar size and nature to ensure that the estimates are reasonable. The analysis is reviewed by senior JCG finance personnel and JCG’s Chief Financial Officer. The analysis is also reviewed by the holders of the noncontrolling interests in INTECH. If the valuation is agreed to by both JCG and the holders of noncontrolling interests, JCG utilizes the analysis to value the redeemable noncontrolling interests.
	Significant inputs related to the relative value analysis include INTECH’s trailing twelve-month operating results, performance fees, investment performance and trends in assets under management. In addition, market trading comparables from a relevant publicly traded peer set are included to complete the relative valuation process. Publicly available comparables utilized for the third quarter 2014 valuation analysis ranged from approximately 8.0x to 13.0x EBITDA. Significant increases or decreases in historical INTECH operating results would result in a significantly higher or lower fair value measurement, respectively. Additionally, a significant increase or decrease in market trading comparables would result in a significantly higher or lower fair value measurement, respectively. Generally, any period-over-period change in INTECH performance or level of assets under management in isolation is accompanied by a directionally similar change in the fair value measurement.
	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.
	The changes in fair value of JCG’s redeemable noncontrolling interests, which are classified as recurring Level 3 fair value measurements, for the three and nine months ended September 30, 2014 and 2013, are as follows (in millions):
		Three months ended						Nine months ended
		September 30,						September 30,
		2014			2013			2014			2013
	Beginning of period fair value	$	4.6		$	40.3		$	7.3		$	42.9
Distributions	(0.2		)	(0.1		)	(0.7		)	(4.3		)
Current earnings	0.1			0.7			0.4			2.8
Purchase of redeemable noncontrolling interests	—			(33.8		)	(0.6		)	(33.8		)
Vesting of noncontrolling interests	—			—			—			1.2
Change in fair value	0.3			—			(1.6		)	(1.7		)
End of period fair value	$	4.8		$	7.1		$	4.8		$	7.1

DEBT

DEBT	9 Months Ended
	Sep. 30, 2014
DEBT	'
DEBT	'
	Note 4 — Debt
	Debt at September 30, 2014, and December 31, 2013, consisted of the following (in millions):
		September 30, 2014				December 31, 2013
		Carrying		Fair		Carrying			Fair
		value		value		value			value
	6.700% Senior Notes due 2017	$	344.4	$	384.3	$	344.4		$	383.7
	0.750% Convertible Senior Notes due 2018	105.4		164.3		103.3			148.8
	3.250% Convertible Senior Notes due 2014	—		—		58			61.8
	6.119% Senior Notes due 2014	—		—		38.9			39.5
	Total debt	449.8		548.6		544.6			633.8
	Less: Current maturities	—		—		(96.9		)	(101.3		)
	Total long-term debt	$	449.8	$	548.6	$	447.7		$	532.5
	Fair Value of Debt
	The fair value of debt was determined using broker quotes and any recent trading activity for each of the notes listed above, which are considered Level 2 inputs.
	6.119% Senior Notes due 2014
	On April 15, 2014, the 6.119% Senior Notes due 2014 matured and JCG paid the principal balance of $38.9 million with cash on hand.
	3.250% Convertible Senior Notes due 2014
	On July 15, 2014, the 3.250% Convertible Senior Notes due 2014 matured and JCG paid the principal balance of $60.0 million with cash on hand.
	0.750% Convertible Senior Notes due 2018
	The initial conversion rate of the 0.750% Convertible Senior Notes due 2018 (“2018 Convertible Notes”) was 92.06 shares of JCG common stock per $1,000 principal amount of the 2018 Convertible Notes, which is equivalent to an initial conversion price of approximately $10.86 per share of common stock. The initial conversion rate was most recently adjusted during the third quarter 2014 when JCG paid a quarterly cash dividend of $0.08 per share, which was greater than the quarterly dividend of $0.07 per share at the time of issuance. As a result of the quarterly cash dividend paid on August 22, 2014, the conversion rate changed to 92.22 shares of JCG common stock per $1,000 principal amount of 2018 Convertible Notes, equivalent to a conversion price of approximately $10.84 per share of common stock.
	Holders of the 2018 Convertible Notes may convert the notes early if the last reported sale price of JCG’s common stock is greater than or equal to $14.10 per share of common stock for at least 20 trading days during a period of 30 trading days.
	Convertible Note Hedge and Warrants
	In connection with the 2018 Convertible Notes issuance in June 2013, 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 initial conversion price of the 2018 Convertible Notes to JCG from $10.86 to $12.60 per share of common stock.
	The initial $10.86 and $12.60 per share of common stock exercise prices of the call options and warrants, respectively, were adjusted during the third quarter 2014 when JCG paid a quarterly cash dividend of $0.08 per share. As a result of the quarterly cash dividend paid on August 22, 2014, which was greater than the quarterly dividend of $0.07 per share at the time of issuance, the exercise price of the call options changed to $10.84 per share of common stock and the exercise price of the warrants changed to $12.58 per share of common stock.
	Interest Rate Adjustment Covenant
	The 6.700% Senior Notes due 2017 are subject to an interest rate adjustment covenant that provides that the interest rate payable will increase by 25 basis points for each level that the Company’s debt rating is decreased by Moody’s Investor Services Inc. (“Moody’s”) from Baa3 or by Standard and Poor’s Rating Service (“S&P”) from BBB-, up to a maximum increase of 200 basis points. If the interest rate has been adjusted upward as a result of either Moody’s or S&P decreasing its rating, then for each level of a subsequent rating increase, the interest payable will be decreased by 25 basis points, but in no event to a rate less than the interest rate payable on the date of issuance of the respective notes. The interest rate adjustment covenant will permanently terminate if the Company’s debt ratings increase to Baa2 (or higher) by Moody’s and BBB (or higher) by S&P, with a stable or positive outlook regardless of any subsequent decrease in the ratings by either or both rating agencies. On March 18, 2014, S&P reaffirmed JCG’s credit rating of BBB-, with a negative outlook. On August 27, 2014, Moody’s reaffirmed JCG’s credit rating of Baa3, with a stable outlook.
	Credit Facility
	At September 30, 2014, JCG had a $200 million, unsecured, revolving credit facility (“the Credit Facility”) with JPMorgan Chase Bank, N.A., as administrative agent and swingline lender. The Credit Facility can be used by JCG and its subsidiaries for working capital needs and general corporate purposes. The Credit Facility bears interest on borrowings outstanding at the London Interbank Offered Rate plus a spread, which is based on JCG’s credit rating. JCG is required to pay a quarterly commitment fee on any unused portion of the Credit Facility, which is also based on JCG’s credit rating. Under the Credit Facility, the financing leverage ratio cannot exceed 3.00x, and the interest coverage ratio must equal or exceed 4.00x. At September 30, 2014, JCG was in compliance with all covenants, and there were no borrowings under the Credit Facility at September 30, 2014, or during the nine months ended September 30, 2014. The Credit Facility has a maturity date of November 23, 2018.
	Capital Lease Obligations
	JCG’s capital lease obligations relate to leased computer equipment. The carrying values of the capital lease obligations totaled $1.1 million and $1.8 million at September 30, 2014, and December 31, 2013, respectively, and are included in other accrued liabilities and other non-current liabilities on JCG’s Condensed Consolidated Balance Sheets. The related lease terms extend through 2017.

INCOME_TAXES

INCOME TAXES	9 Months Ended
	Sep. 30, 2014
INCOME TAXES	'
INCOME TAXES	'
	Note 5 — Income Taxes
	The Company’s effective tax rates for the three and nine months ended September 30, 2014 and 2013, are as follows:
		Three months ended				Nine months ended
		September 30,				September 30,
		2014		2013		2014		2013
	Effective tax rate	36.7	%	37.8	%	41.1	%	39.2	%
	The Company’s effective tax rate decreased by 1.1% for the three months ended September 30, 2014, and increased 1.9% for the nine months ended September 30, 2014. The three-month period decrease and nine-month period increase are due largely to the reversal of unrealized deferred tax assets upon the expiration and vesting of certain equity-based compensation awards and changes in tax reserves and ownership in noncontrolling interests.
	As of September 30, 2014, JCG had $5.7 million of accrued reserves for income tax contingencies. JCG accrued additional reserves for income tax contingencies in the amount of $0.2 million during the third quarter 2014, creating a net tax expense of $0.1 million. JCG also decreased its income tax contingency reserves by $0.1 million during the third quarter 2014, creating a net tax benefit of $0.1 million. JCG anticipates that its income tax contingency reserves will decrease by approximately $1.3 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 non-current liabilities on JCG’s Condensed Consolidated Balance Sheets.

NONCONTROLLING_INTERESTS

NONCONTROLLING INTERESTS	9 Months Ended
	Sep. 30, 2014
NONCONTROLLING INTERESTS	'
NONCONTROLLING INTERESTS	'
	Note 6 — Noncontrolling Interests
	Noncontrolling interests in net income consisted of the following (in millions):
		Three months ended					Nine months ended
		September 30,					September 30,
		2014			2013		2014			2013
	Nonredeemable noncontrolling interests in INTECH	$	0.2		$	0.3	$	0.7		$	0.8
	Nonredeemable noncontrolling interests in consolidated seeded investment products	(0.6		)	2		(0.2		)	2.1
	Redeemable noncontrolling interests in subsidiaries	0.1			0.7		0.4			2.8
	Total noncontrolling interests in net income	$	(0.3	)	$	3	$	0.9		$	5.7
	Nonredeemable Noncontrolling Interests
	At September 30, 2014, noncontrolling interests that are not subject to redemption rights included employee ownership interests in INTECH and third-party investors’ ownership in consolidated seeded investment products.
	Nonredeemable noncontrolling interests as of September 30, 2014, and December 31, 2013, are summarized as follows (in millions):
		September 30,			December 31,
		2014			2013
	Nonredeemable noncontrolling interests in consolidated seeded investment products	$	38.8		$	8.8
	Nonredeemable noncontrolling interests in INTECH	5.0			4.9
	Total nonredeemable noncontrolling interests	$	43.8		$	13.7
	Changes in noncontrolling interests in consolidated seeded investment products were driven by changes in the market value of the underlying seeded investment products and changes in ownership of the underlying seeded investment products. Noncontrolling interests in seeded products increased in 2014 due to third-party investment in a number of the Company’s mutual funds during the third quarter of 2014.
	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,
		2014			2013		2014			2013
	Beginning of period balance	$	14.4		$	26.1	$	8.8		$	12.4
	Changes in market value	(0.6		)	2		(0.2		)	2.1
	Changes in ownership	25			5.8		30.2			19.4
	End of period balance	$	38.8		$	33.9	$	38.8		$	33.9
	Redeemable Noncontrolling Interests
	As of September 30, 2014, and December 31, 2013, redeemable noncontrolling interests are summarized as follows (in millions):
		September 30,			December 31,
		2014			2013
	Redeemable noncontrolling interests in subsidiaries	$	5.5		$	5.9
	Undistributed earnings	(0.7		)	1.4
	Total redeemable noncontrolling interests	$	4.8		$	7.3
	INTECH
	INTECH ownership interests held by a founding member had an estimated fair value of $5.5 million and $5.3 million as of September 30, 2014, and December 31, 2013, 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 interests of INTECH at fair value.
	Perkins
	On February 3, 2014, JCG exercised its right to purchase the remaining noncontrolling ownership units in Perkins Investment Management LLC (“Perkins”) of 0.4%. Under the terms of the call, the remaining noncontrolling ownership units were redeemed for $0.6 million on March 14, 2014, based on the fair value as of the call exercise date. 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 continues 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 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, 2014
LONG-TERM INCENTIVE COMPENSATION	'
LONG-TERM INCENTIVE COMPENSATION	'
	Note 7 — Long-Term Incentive Compensation
	JCG generally grants annual long-term incentive awards in February of each year. JCG granted $55.5 million in long-term incentive awards during the nine months ended September 30, 2014, which generally vest and will be recognized ratably over a four-year period. The 2014 awards consisted of $32.8 million of restricted stock (3.0 million shares at a weighted-average price of $10.95 per share) and $22.7 million of mutual fund share awards.
	During the three and nine months ended September 30, 2014, JCG recognized $0.9 million and $3.3 million of long-term incentive compensation expense related to mark-to-market adjustments of mutual fund share awards and deferred compensation plans, and $2.4 million and $5.7 million during the same periods in 2013, respectively.
	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.
	Additionally, in October 2014, INTECH granted new long-term incentive awards to retain and incentivize employees. The new awards consist of appreciation rights, profits interests and phantom interests and are designed to give recipients an equity-like stake in INTECH. Combined, the new awards represent an approximate 12% economic stake in INTECH’s pre-incentive profits and replace a portion of the prior discretionary bonus pool. The appreciation rights have a grant date fair value of $23.2 million which will be amortized on a straight-line basis over the 10-year vesting schedule.
	Profits interests and phantom interests entitle holders to periodic distributions of a portion of operating income. Distributions are made during employment and, for profits interests, post-employment for up to 10 years. Phantom interests are entitled to a one-time distribution at termination of employment. Compensation expense for post-employment distributions will be based upon the present value of expected future distributions and will be recognized pro-rata over the 10-year vesting schedule for profits interests and five years for phantom interests. Estimated compensation expense for the post-employment payments associated with the profits and phantom interests for the next four quarters is approximately $2.0 million.

OTHER_EXPENSE_INCOME_NET

OTHER (EXPENSE) INCOME, NET	9 Months Ended
	Sep. 30, 2014
OTHER (EXPENSE) INCOME, NET	'
OTHER (EXPENSE) INCOME, NET	'
	Note 8 — Other (Expense) Income, Net
	The components of other (expense) income, net are as follows (in millions):
		Three months ended					Nine months ended
		September 30,					September 30,
		2014			2013		2014			2013
	Dividend income	$	0.4		$	0.4	$	1.3		$	1.1
	Interest income	0.2			0.1		0.5			0.4
	Foreign currency (losses) gains, net	(1.7		)	0.3		(1.9		)	0.2
	Other, net	—			—		—			0.1
	Total other (expense) income, net	$	(1.1	)	$	0.8	$	(0.1	)	$	1.8

ACCUMULATED_OTHER_COMPREHENSIV

ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS)	9 Months Ended
	Sep. 30, 2014
ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS)	'
ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS)	'
	Note 9 — Accumulated Other Comprehensive Income (Loss)
	Changes in accumulated other comprehensive income (loss), net of tax, for the three and nine months ended September 30, 2014 and 2013, are as follows (in millions):
		Three months ended September 30,
		2014									2013
		Unrealized gains									Unrealized gains
		(losses) on			Foreign						(losses) on			Foreign
		available-for-sale			currency						available-for-sale			currency
		securities			losses			Total			securities			losses			Total
	Beginning balance	$	3		$	(2.3	)	$	0.7		$	1.1		$	(2.3	)	$	(1.2	)
	Other comprehensive income (loss) before reclassifications	—			—			—			0.7			—			0.7
	Amounts reclassified from accumulated other comprehensive income (loss) to:
	Investment gains, net	(1.8		)	—			(1.8		)	(0.7		)	—			(0.7		)
	Net current period other comprehensive loss	(1.8		)	—			(1.8		)	—			—			—
	Ending balance	$	1.2		$	(2.3	)	$	(1.1	)	$	1.1		$	(2.3	)	$	(1.2	)
		Nine months ended September 30,
		2014									2013
		Unrealized gains									Unrealized gains
		(losses) on			Foreign						(losses) on			Foreign
		available-for-sale			currency						available-for-sale			currency
		securities			losses			Total			securities			losses			Total
	Beginning balance	$	1.2		$	(2.3	)	$	(1.1	)	$	1.4		$	(0.8	)	$	0.6
	Other comprehensive income (loss) before reclassifications	2.3			—			2.3			0.6			—			0.6
	Amounts reclassified from accumulated other comprehensive income (loss) to:
	Investment gains, net	(2.3		)	—			(2.3		)	(0.9		)	—			(0.9		)
	Other (expense) income, net	—			—			—			—			(1.5		)	(1.5		)
	Net current period other comprehensive loss	—			—			—			(0.3		)	(1.5		)	(1.8		)
	Ending balance	$	1.2		$	(2.3	)	$	(1.1	)	$	1.1		$	(2.3	)	$	(1.2	)

EARNINGS_PER_SHARE

EARNINGS PER SHARE	9 Months Ended
	Sep. 30, 2014
EARNINGS PER SHARE	'
EARNINGS PER SHARE	'
	Note 10 — Earnings Per Share
	The following is a summary of the earnings per share calculation for the three and nine months ended September 30, 2014 and 2013 (in millions, except per share data):
		Three months ended					Nine months ended
		September 30,					September 30,
		2014			2013		2014		2013
	Net income attributable to JCG	$	40.9		$	32.6	$	107.7	$	76.4
	Less: Allocation of earnings to participating restricted stock awards	1.4			—		3.6		—
	Net income attributable to JCG common shareholders	$	39.5		$	32.6	$	104.1	$	76.4
	Basic earnings per share attributable to JCG common shareholders:
	Weighted-average common shares outstanding	181.4			184.7		183.0		184.8
	Basic earnings per share	$	0.22		$	0.18	$	0.57	$	0.41
	Diluted earnings per share attributable to JCG common shareholders:
	Weighted-average common shares outstanding	181.4			184.7		183.0		184.8
	Incremental common shares	1.4			1.7		1.0		1.2
	Weighted-average diluted common shares outstanding	182.8			186.4		184.0		186.0
	Diluted earnings per share	$	0.22		$	0.17	$	0.57	$	0.41
	Dividends paid per share	$	0.08		$	0.07	$	0.23	$	0.14
	Incremental common shares include the dilutive effect of stock options, unvested nonparticipating restricted stock awards, the 2018 Convertible Notes and price-vesting units using the two-class method of calculating earnings per share.
	The following stock options, unvested nonparticipating 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,
		2014		2013		2014	2013
	Employee stock options	1.8		7.0		3.4	7.0
	Other stock options	—		14.0		—	14.0
	Unvested nonparticipating restricted stock and price-vesting units	0.1		0.2		0.1	1.0
	All shares held in the JCG Employee Stock Ownership Plan are treated as outstanding for purposes of computing basic earnings per share.

LITIGATION_AND_OTHER_REGULATOR

LITIGATION AND OTHER REGULATORY MATTERS	9 Months Ended
	Sep. 30, 2014
LITIGATION AND OTHER REGULATORY MATTERS	'
LITIGATION AND OTHER REGULATORY MATTERS	'
	Note 11 — Litigation and Other Regulatory Matters
	JCG is periodically involved in various legal proceedings and other regulatory matters. At September 30, 2014, JCG had a $0.2 million litigation accrual for all pending litigation matters. Possible losses in addition to this amount 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.

ACQUISITION_OF_VS_HOLDINGS_INC

ACQUISITION OF VS HOLDINGS INC	9 Months Ended
	Sep. 30, 2014
ACQUISITION OF VS HOLDINGS INC	'
ACQUISITION OF VS HOLDINGS INC	'
	Note 12 — Acquisition of VS Holdings Inc.
	On October 13, 2014, the Company entered into an agreement to acquire VS Holdings Inc., the parent company of VelocityShares, LLC (“VelocityShares”). VelocityShares is a leading sponsor of unique exchange-traded products (“ETPs”), including rules-based exchange-traded funds (“ETFs”), that are institutionally-focused, and deliver sophisticated volatility management solutions. As of September 30, 2014, VelocityShares-branded products had approximately $2 billion in assets. The majority of these assets represent tactical trading products serving short-term investors and traders in the form of exchange-traded notes. More recently, VelocityShares has leveraged its expertise to launch a second business around innovative and intelligent ETFs for diversified investment portfolios, currently focused on volatility hedged equities and equal-risk weighted solutions. These ETF strategies, along with future product innovation, offer significant potential synergies between VelocityShares and JCG.
	The transaction includes initial upfront cash consideration of $30.0 million with up to an additional $36.0 million in contingent cash consideration if certain revenue targets are achieved over a four-year period. The acquisition is expected to close in the fourth quarter of 2014 and is subject to certain conditions, including regulatory approval.

INVESTMENT_SECURITIES_Tables

INVESTMENT SECURITIES (Tables)	9 Months Ended
	Sep. 30, 2014
INVESTMENT SECURITIES	'
Investment securities, carried at fair value	'
	JCG’s investment securities as of September 30, 2014, and December 31, 2013, are summarized as follows (in millions):
		September 30,			December 31,
		2014			2013
	Trading securities:
	Seeded investment products	$	315.9		$	312.9
	Investments in advised mutual funds	4.3			45.5
	Investments related to deferred compensation plans	12.5			14.9
	Total trading securities	332.7			373.3
	Available-for-sale securities:
	Seeded investment products	8.5			10.7
	Debt securities	—			101.5
	Total available-for-sale securities	8.5			112.2
	Total investment securities	$	341.2		$	485.5
Summary of the amortized cost, gross unrealized gains and losses, and estimated fair value and carrying value classified as available-for-sale securities	'
	The following is a summary of available-for-sale securities at September 30, 2014, and December 31, 2013 (in millions):
		September 30, 2014
					Gross unrealized						Foreign
					investment						currency			Estimated		Carrying
		Cost			Gains			Losses			translation			fair value		value
	Available-for-sale securities:
	Seeded investment products	$	8.2		$	0.5		$	(0.1	)	$	(0.1	)	$	8.5	$	8.5
		December 31, 2013
					Gross unrealized						Foreign
					investment						currency			Estimated		Carrying
		Cost			Gains			Losses			translation			fair value		value
	Available-for-sale securities:
	Seeded investment products	$	9.9		$	0.9		$	—		$	(0.1	)	$	10.7	$	10.7
	Debt securities	101.6			—			(0.1		)	—			101.5		101.5
	Total available-for-sale securities	$	111.5		$	0.9		$	(0.1	)	$	(0.1	)	$	112.2	$	112.2
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, 2014 and 2013 (in millions):
		Three months ended						Nine months ended
		September 30,						September 30,
		2014			2013			2014			2013
	Realized gains	$	2.6		$	1.8		$	2.8		$	2.6
	Realized losses	—			(0.5		)	(0.1		)	(1.1		)
	Net realized gains	$	2.6		$	1.3		$	2.7		$	1.5
Schedule of derivative instruments	'
		September 30, 2014					December 31, 2013
		Number of		Notional value			Number of		Notional value
		contracts		(in millions)			contracts		(in millions)
	Index swaps	4		$	55.5		6		$	184.3
	Index futures	6		$	89.8		6		$	66.6
	Foreign currency forward contracts	6		$	3.2		6		$	93.6
Schedule of gross and offsetting amounts for derivative instruments	'
	The following tables illustrate the effect of offsetting derivative instruments on JCG’s Condensed Consolidated Balance Sheets as of September 30, 2014, and December 31, 2013 (in millions):
		September 30, 2014
					Gross amounts
		Gross amounts			offset			Net amounts
	Assets:
	Index futures	$	0.9		$	—		$	0.9
		December 31, 2013
					Gross amounts
		Gross amounts			offset			Net amounts
	Assets:
	Index swaps	$	0.1		$	(0.1	)	$	—
	Index futures	0.9			(0.4		)	0.5
	Total	$	1		$	(0.5	)	$	0.5
	Liabilities:
	Index swaps	$	1.5		$	(1.5	)	$	—
	Index futures	0.4			(0.4		)	—
	Foreign currency forward contracts	1.5			—			1.5
	Total	$	3.4		$	(1.9	)	$	1.5
Schedule of net gains (losses) in earnings on hedged seed investments and associated index futures and index swaps	'
	JCG recognized the following net gains (losses) on hedged seed investments and net gains (losses) on associated index futures and index swaps for the three and nine months ended September 30, 2014 and 2013 (in millions):
		Three months ended						Nine months ended
		September 30,						September 30,
		2014			2013			2014			2013
	Hedged seed investments classified as trading securities	$	(2.1	)	$	15.4		$	4.4		$	18.6
	Hedged seed investments classified as available-for-sale securities	—			0.6			3.2			0.6
	Total hedged seed investments	(2.1		)	16			7.6			19.2
	Index futures	(0.8		)	(13.7		)	(5.2		)	(20.5		)
	Index swaps	1.7			(0.7		)	(3.1		)	(2.1		)
	Total	$	(1.2	)	$	1.6		$	(0.7	)	$	(3.4	)
Schedule of net (losses) gains in earnings on hedged seed investments denominated in a foreign currency and associated foreign currency forward contracts	'
	JCG recognized the following net (losses) gains on hedged seed investments denominated in a foreign currency and net gains (losses) on associated foreign currency forward contracts for the three and nine months ended September 30, 2014 and 2013 (in millions):
		Three months ended						Nine months ended
		September 30,						September 30,
		2014			2013			2014			2013
	Net (losses) gains in net income related to:
	Foreign currency translation	$	(0.7	)	$	3.4		$	(1.7	)	$	2.7
	Foreign currency forward contracts	0.4			(3.7		)	1.2			(2.9		)
	Total	$	(0.3	)	$	(0.3	)	$	(0.5	)	$	(0.2	)
Schedule of investment gains, net on the Consolidated Statements of Comprehensive Income	'
	Investment gains, net on JCG’s Condensed Consolidated Statements of Comprehensive Income included the following for the three and nine months ended September 30, 2014 and 2013  (in millions):
		Three months ended						Nine months ended
		September 30,						September 30,
		2014			2013			2014			2013
	Seeded investment products	$	1		$	17.4		$	8.9		$	18
	Noncontrolling interests in seeded investment products	(0.6		)	2			(0.2		)	2.1
	Investments in advised mutual funds	(0.1		)	2.2			(0.1		)	7
	Index swaps and index futures	0.9			(14.4		)	(8.3		)	(22.6		)
	Economic hedge for deferred compensation plans	0.1			0.7			0.8			1.9
	Investment gains, net	$	1.3		$	7.9		$	1.1		$	6.4
Cash flows related to investment securities	'
	Cash flows related to investment securities for the three and nine months ended September 30, 2014 and 2013, are summarized as follows (in millions):
		Three months ended September 30,
		2014						2013
		Purchases			Sales,			Purchases			Sales,
		and			settlements and			and			settlements and
		settlements			maturities			settlements			maturities
	Trading securities	$	(106.0	)	$	27.3		$	(2.1	)	$	2.2
	Available-for-sale securities	—			76.9			(0.1		)	8.1
	Derivative instruments:
	Seed capital economic hedge	(3.6		)	5.3			(19.2		)	8
	Total cash flows	$	(109.6	)	$	109.5		$	(21.4	)	$	18.3
		Nine months ended September 30,
		2014						2013
		Purchases			Sales,			Purchases			Sales,
		and			settlements and			and			settlements and
		settlements			maturities			settlements			maturities
	Trading securities	$	(138.1	)	$	143.5		$	(113.5	)	$	62.5
	Available-for-sale securities	(0.2		)	174.8			(0.4		)	18.2
	Derivative instruments:
	Seed capital economic hedge	(21.1		)	13.2			(53.9		)	31.5
	Total cash flows	$	(159.4	)	$	331.5		$	(167.8	)	$	112.2

FAIR_VALUE_MEASUREMENTS_Tables

FAIR VALUE MEASUREMENTS (Tables)	9 Months Ended
	Sep. 30, 2014
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, 2014 (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	$	—		$	275.9		$	—		$	275.9
	Index futures	0.9			—			—			0.9
	Trading securities:
	Seeded investment products	159.5			156.4			—			315.9
	Investments in advised mutual funds	4.3			—			—			4.3
	Investments related to deferred compensation plans	12.5			—			—			12.5
	Available-for-sale securities:
	Seeded investment products	8.5			—			—			8.5
	Total investment securities	184.8			156.4			—			341.2
	Total assets	$	185.7		$	432.3		$	—		$	618.0
	Liabilities:
	Long-term debt	$	—		$	548.6		$	—		$	548.6
	Redeemable noncontrolling interests	$	—		$	—		$	4.8		$	4.8
	The following table presents assets, liabilities and redeemable noncontrolling interests measured or disclosed at fair value on a recurring basis as of December 31, 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	$	—		$	199.0		$	—		$	199.0
	Index swaps	—			0.1			—			0.1
	Index futures	—			0.9			—			0.9
	Trading securities:
	Seeded investment products	265.9			47.0			—			312.9
	Investments in advised mutual funds	45.5			—			—			45.5
	Investments related to deferred compensation plans	14.9			—			—			14.9
	Available-for-sale securities:
	Seeded investment products	10.7			—			—			10.7
	Debt securities	—			101.5			—			101.5
	Total investment securities	337.0			148.5			—			485.5
	Total assets	$	337.0		$	348.5		$	—		$	685.5
	Liabilities:
	Current portion of long-term debt	$	—		$	101.3		$	—		$	101.3
	Long-term debt	—			532.5			—			532.5
	Index swaps	—			1.5			—			1.5
	Index futures	—			0.4			—			0.4
	Foreign currency forward contracts	—			1.5			—			1.5
	Total liabilities	$	—		$	637.2		$	—		$	637.2
	Redeemable noncontrolling interests	$	—		$	—		$	7.3		$	7.3
Schedule of from Level 1 and Level 2 classifications	'
	Transfers are recognized at the end of each reporting period. Transfers from Level 1 and Level 2 classifications for the nine months ended September 30, 2014 and 2013, are summarized as follows (in millions):
		September 30,
		2014			2013
	Transfers from Level 1 to Level 2	$	5.5		$	—
	Transfers from Level 2 to Level 1	$	0.4		$	13.4
Schedule of changes in fair value of the recurring Level 3 fair value measurement	'
	The changes in fair value of JCG’s redeemable noncontrolling interests, which are classified as recurring Level 3 fair value measurements, for the three and nine months ended September 30, 2014 and 2013, are as follows (in millions):
		Three months ended						Nine months ended
		September 30,						September 30,
		2014			2013			2014			2013
	Beginning of period fair value	$	4.6		$	40.3		$	7.3		$	42.9
	Distributions	(0.2		)	(0.1		)	(0.7		)	(4.3		)
	Current earnings	0.1			0.7			0.4			2.8
	Purchase of redeemable noncontrolling interests	—			(33.8		)	(0.6		)	(33.8		)
	Vesting of noncontrolling interests	—			—			—			1.2
	Change in fair value	0.3			—			(1.6		)	(1.7		)
	End of period fair value	$	4.8		$	7.1		$	4.8		$	7.1

DEBT_Tables

DEBT (Tables)	9 Months Ended
	Sep. 30, 2014
DEBT	'
Components of debt	'
	Debt at September 30, 2014, and December 31, 2013, consisted of the following (in millions):
		September 30, 2014				December 31, 2013
		Carrying		Fair		Carrying			Fair
		value		value		value			value
	6.700% Senior Notes due 2017	$	344.4	$	384.3	$	344.4		$	383.7
	0.750% Convertible Senior Notes due 2018	105.4		164.3		103.3			148.8
	3.250% Convertible Senior Notes due 2014	—		—		58			61.8
	6.119% Senior Notes due 2014	—		—		38.9			39.5
	Total debt	449.8		548.6		544.6			633.8
	Less: Current maturities	—		—		(96.9		)	(101.3		)
	Total long-term debt	$	449.8	$	548.6	$	447.7		$	532.5

INCOME_TAXES_Tables

INCOME TAXES (Tables)	9 Months Ended
	Sep. 30, 2014
INCOME TAXES	'
Schedule of effective income tax rates	'
		Three months ended				Nine months ended
		September 30,				September 30,
		2014		2013		2014		2013
	Effective tax rate	36.7	%	37.8	%	41.1	%	39.2	%

NONCONTROLLING_INTERESTS_Table

NONCONTROLLING INTERESTS (Tables)	9 Months Ended
	Sep. 30, 2014
NONCONTROLLING INTERESTS	'
Schedule of noncontrolling interests in net income	'
	Noncontrolling interests in net income consisted of the following (in millions):
		Three months ended					Nine months ended
		September 30,					September 30,
		2014			2013		2014			2013
	Nonredeemable noncontrolling interests in INTECH	$	0.2		$	0.3	$	0.7		$	0.8
	Nonredeemable noncontrolling interests in consolidated seeded investment products	(0.6		)	2		(0.2		)	2.1
	Redeemable noncontrolling interests in subsidiaries	0.1			0.7		0.4			2.8
	Total noncontrolling interests in net income	$	(0.3	)	$	3	$	0.9		$	5.7
Summary of nonredeemable noncontrolling interests	'
	Nonredeemable noncontrolling interests as of September 30, 2014, and December 31, 2013, are summarized as follows (in millions):
		September 30,			December 31,
		2014			2013
	Nonredeemable noncontrolling interests in consolidated seeded investment products	$	38.8		$	8.8
	Nonredeemable noncontrolling interests in INTECH	5.0			4.9
	Total nonredeemable noncontrolling interests	$	43.8		$	13.7
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,
		2014			2013		2014			2013
	Beginning of period balance	$	14.4		$	26.1	$	8.8		$	12.4
	Changes in market value	(0.6		)	2		(0.2		)	2.1
	Changes in ownership	25			5.8		30.2			19.4
	End of period balance	$	38.8		$	33.9	$	38.8		$	33.9
Summary of redeemable noncontrolling interests	'
	As of September 30, 2014, and December 31, 2013, redeemable noncontrolling interests are summarized as follows (in millions):
		September 30,			December 31,
		2014			2013
	Redeemable noncontrolling interests in subsidiaries	$	5.5		$	5.9
	Undistributed earnings	(0.7		)	1.4
	Total redeemable noncontrolling interests	$	4.8		$	7.3

OTHER_EXPENSE_INCOME_NET_Table

OTHER (EXPENSE) INCOME, NET (Tables)	9 Months Ended
	Sep. 30, 2014
OTHER (EXPENSE) INCOME, NET	'
Schedule of components of other (expense) income, net	'
	The components of other (expense) income, net are as follows (in millions):
		Three months ended					Nine months ended
		September 30,					September 30,
		2014			2013		2014			2013
	Dividend income	$	0.4		$	0.4	$	1.3		$	1.1
	Interest income	0.2			0.1		0.5			0.4
	Foreign currency (losses) gains, net	(1.7		)	0.3		(1.9		)	0.2
	Other, net	—			—		—			0.1
	Total other (expense) income, net	$	(1.1	)	$	0.8	$	(0.1	)	$	1.8

ACCUMULATED_OTHER_COMPREHENSIV1

ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) (Tables)	9 Months Ended
	Sep. 30, 2014
ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS)	'
Schedule of the changes in accumulated other comprehensive income (loss), net of tax	'
	Changes in accumulated other comprehensive income (loss), net of tax, for the three and nine months ended September 30, 2014 and 2013, are as follows (in millions):
		Three months ended September 30,
		2014									2013
		Unrealized gains									Unrealized gains
		(losses) on			Foreign						(losses) on			Foreign
		available-for-sale			currency						available-for-sale			currency
		securities			losses			Total			securities			losses			Total
	Beginning balance	$	3		$	(2.3	)	$	0.7		$	1.1		$	(2.3	)	$	(1.2	)
	Other comprehensive income (loss) before reclassifications	—			—			—			0.7			—			0.7
	Amounts reclassified from accumulated other comprehensive income (loss) to:
	Investment gains, net	(1.8		)	—			(1.8		)	(0.7		)	—			(0.7		)
	Net current period other comprehensive loss	(1.8		)	—			(1.8		)	—			—			—
	Ending balance	$	1.2		$	(2.3	)	$	(1.1	)	$	1.1		$	(2.3	)	$	(1.2	)
		Nine months ended September 30,
		2014									2013
		Unrealized gains									Unrealized gains
		(losses) on			Foreign						(losses) on			Foreign
		available-for-sale			currency						available-for-sale			currency
		securities			losses			Total			securities			losses			Total
	Beginning balance	$	1.2		$	(2.3	)	$	(1.1	)	$	1.4		$	(0.8	)	$	0.6
	Other comprehensive income (loss) before reclassifications	2.3			—			2.3			0.6			—			0.6
	Amounts reclassified from accumulated other comprehensive income (loss) to:
	Investment gains, net	(2.3		)	—			(2.3		)	(0.9		)	—			(0.9		)
	Other (expense) income, net	—			—			—			—			(1.5		)	(1.5		)
	Net current period other comprehensive loss	—			—			—			(0.3		)	(1.5		)	(1.8		)
	Ending balance	$	1.2		$	(2.3	)	$	(1.1	)	$	1.1		$	(2.3	)	$	(1.2	)

EARNINGS_PER_SHARE_Tables

EARNINGS PER SHARE (Tables)	9 Months Ended
	Sep. 30, 2014
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, 2014 and 2013 (in millions, except per share data):
		Three months ended					Nine months ended
		September 30,					September 30,
		2014			2013		2014		2013
	Net income attributable to JCG	$	40.9		$	32.6	$	107.7	$	76.4
	Less: Allocation of earnings to participating restricted stock awards	1.4			—		3.6		—
	Net income attributable to JCG common shareholders	$	39.5		$	32.6	$	104.1	$	76.4
	Basic earnings per share attributable to JCG common shareholders:
	Weighted-average common shares outstanding	181.4			184.7		183.0		184.8
	Basic earnings per share	$	0.22		$	0.18	$	0.57	$	0.41
	Diluted earnings per share attributable to JCG common shareholders:
	Weighted-average common shares outstanding	181.4			184.7		183.0		184.8
	Incremental common shares	1.4			1.7		1.0		1.2
	Weighted-average diluted common shares outstanding	182.8			186.4		184.0		186.0
	Diluted earnings per share	$	0.22		$	0.17	$	0.57	$	0.41
	Dividends paid per share	$	0.08		$	0.07	$	0.23	$	0.14
Schedule of anti-dilutive securities that have not been included in the calculation of weighted average diluted shares outstanding	'
	The following stock options, unvested nonparticipating 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,
		2014		2013		2014	2013
	Employee stock options	1.8		7.0		3.4	7.0
	Other stock options	—		14.0		—	14.0
	Unvested nonparticipating restricted stock and price-vesting units	0.1		0.2		0.1	1.0

BASIS_OF_PRESENTATION_Details

BASIS OF PRESENTATION (Details)	9 Months Ended
	Sep. 30, 2014
	segment
BASIS OF PRESENTATION	'
Number of operating segments	1

INVESTMENT_SECURITIES_Details

INVESTMENT SECURITIES (Details) (USD $)	3 Months Ended		9 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Dec. 31, 2013
Short-term investments:	'	'	'	'	'
Estimated Fair Value	$341.20	'	$341.20	'	$485.50
Available-for-sale securities	'	'	'	'	'
Assets	'	'	'	'	1
Net gains (losses):	'	'	'	'	'
Total	-1.2	1.6	-0.7	-3.4	'
Net gains (losses) in net income related to:	'	'	'	'	'
Foreign currency translation	-0.7	3.4	-1.7	2.7	'
Foreign currency forward contracts	0.4	-3.7	1.2	-2.9	'
Total	-0.3	-0.3	-0.5	-0.2	'
Investment gains, net	1.3	7.9	1.1	6.4	'
Cash flows related to investment securities	'	'	'	'	'
Purchases and settlements	-109.6	-21.4	-159.4	-167.8	'
Sales, settlements and maturities	109.5	18.3	331.5	112.2	'
Seeded Investment Products [Member]	'	'	'	'	'
Net gains (losses):	'	'	'	'	'
Total hedged seed investments	-2.1	16	7.6	19.2	'
Net gains (losses) in net income related to:	'	'	'	'	'
Investment gains, net	1	17.4	8.9	18	'
Noncontrolling Interests in Seeded lnvestment Products [Member]	'	'	'	'	'
Net gains (losses) in net income related to:	'	'	'	'	'
Investment gains, net	-0.6	2	-0.2	2.1	'
Advised Funds [Member]	'	'	'	'	'
Net gains (losses) in net income related to:	'	'	'	'	'
Investment gains, net	-0.1	2.2	-0.1	7	'
Index Swap and Futures Contract [Member]	'	'	'	'	'
Net gains (losses) in net income related to:	'	'	'	'	'
Investment gains, net	0.9	-14.4	-8.3	-22.6	'
Deferred Compensation Hedge Asset [Member]	'	'	'	'	'
Net gains (losses) in net income related to:	'	'	'	'	'
Investment gains, net	0.1	0.7	0.8	1.9	'
Trading Securities [Member]	'	'	'	'	'
Short-term investments:	'	'	'	'	'
Estimated Fair Value	332.7	'	332.7	'	373.3
Cash flows related to investment securities	'	'	'	'	'
Purchases and settlements	-106	-2.1	-138.1	-113.5	'
Sales, settlements and maturities	27.3	2.2	143.5	62.5	'
Trading Securities [Member] | Seeded Investment Products [Member]	'	'	'	'	'
Short-term investments:	'	'	'	'	'
Estimated Fair Value	315.9	'	315.9	'	312.9
Seeded investment products	100	'	100	'	'
Recognized gains on trading securities that were still held as of the reporting date	'	'	4.7	14.5	'
Net gains (losses):	'	'	'	'	'
Total hedged seed investments	-2.1	15.4	4.4	18.6	'
Trading Securities [Member] | Seeded Investment Products [Member] | Domestic trust	'	'	'	'	'
Short-term investments:	'	'	'	'	'
Seeded investment products	48	'	48	'	'
Trading Securities [Member] | Seeded Investment Products [Member] | International trust	'	'	'	'	'
Short-term investments:	'	'	'	'	'
Seeded investment products	52	'	52	'	'
Trading Securities [Member] | Mutual Fund Share Awards [Member]	'	'	'	'	'
Short-term investments:	'	'	'	'	'
Estimated Fair Value	4.3	'	4.3	'	45.5
Trading Securities [Member] | Separately Managed Accounts [Member]	'	'	'	'	'
Short-term investments:	'	'	'	'	'
Seeded investment products	68.7	'	68.7	'	82.9
Number of separately managed accounts	30	'	30	'	28
Trading Securities [Member] | Advised Funds [Member]	'	'	'	'	'
Short-term investments:	'	'	'	'	'
Seeded investment products	247.2	'	247.2	'	230
Number of portfolios of funds	17	'	17	'	12
Trading Securities [Member] | Deferred Compensation Hedge Asset [Member]	'	'	'	'	'
Short-term investments:	'	'	'	'	'
Estimated Fair Value	12.5	'	12.5	'	14.9
Available-for-sale Securities [Member]	'	'	'	'	'
Short-term investments:	'	'	'	'	'
Estimated Fair Value	'	'	'	'	112.2
Seeded investment products	8.5	'	8.5	'	10.7
Number of debt securities	1	'	9	'	'
Available-for-sale securities	'	'	'	'	'
Debt securities, par value	12	'	100	'	'
Available-for-sale Securities, Amortized cost	'	'	'	'	111.5
Available-for-sale securities, Gross unrealized gains	'	'	'	'	0.9
Available-for-sale securities, Gross unrealized losses	'	'	'	'	-0.1
Available-for-sale securities, Carrying value	8.5	'	8.5	'	112.2
Other-than-temporary impairment charges	'	'	0	0	'
Available-for-Sale Securities	'	'	'	'	'
Available-for-Sale Securities, Realized gains	2.6	1.8	2.8	2.6	'
Available-for-Sale Securities, Realized losses	'	-0.5	-0.1	-1.1	'
Available-for-Sale Securities, Net realized (losses) gains	2.6	1.3	2.7	1.5	'
Cash flows related to investment securities	'	'	'	'	'
Purchases and settlements	'	-0.1	-0.2	-0.4	'
Sales, settlements and maturities	76.9	8.1	174.8	18.2	'
Available-for-sale Securities [Member] | Seeded Investment Products [Member]	'	'	'	'	'
Short-term investments:	'	'	'	'	'
Estimated Fair Value	8.5	'	8.5	'	10.7
Available-for-sale securities	'	'	'	'	'
Available-for-sale Securities, Amortized cost	8.2	'	8.2	'	9.9
Available-for-sale securities, Gross unrealized gains	0.5	'	0.5	'	0.9
Available-for-sale securities, Gross unrealized losses	-0.1	'	-0.1	'	'
Available-for-sale securities, Carrying value	8.5	'	8.5	'	10.7
Net gains (losses):	'	'	'	'	'
Total hedged seed investments	'	0.6	3.2	0.6	'
Available-for-sale Securities [Member] | Debt Securities [Member]	'	'	'	'	'
Short-term investments:	'	'	'	'	'
Estimated Fair Value	'	'	'	'	101.5
Available-for-sale securities	'	'	'	'	'
Available-for-sale Securities, Amortized cost	'	'	'	'	101.6
Available-for-sale securities, Gross unrealized losses	'	'	'	'	-0.1
Available-for-sale securities, Carrying value	'	'	'	'	101.5
Available-for-sale Securities [Member] | Advised Funds [Member]	'	'	'	'	'
Short-term investments:	'	'	'	'	'
Seeded investment products	8.5	10.7	8.5	10.7	'
Number of portfolios of funds	38	'	38	'	34
Derivative Instruments [Member] | Hedging Securities on Seed Capital [Member]	'	'	'	'	'
Cash flows related to investment securities	'	'	'	'	'
Purchases and settlements	-3.6	-19.2	-21.1	-53.9	'
Sales, settlements and maturities	5.3	8	13.2	31.5	'
Index Swap [Member]	'	'	'	'	'
Available-for-sale securities	'	'	'	'	'
Assets	'	'	'	'	0.1
Net gains (losses):	'	'	'	'	'
Gain (loss) on derivatives not designated as hedging	1.7	-0.7	-3.1	-2.1	'
Index Swap [Member] | Derivative Instruments [Member] | Not Designated as Hedging Instrument [Member]	'	'	'	'	'
Available-for-Sale Securities	'	'	'	'	'
Number of positions of derivative	4	'	4	'	6
Notional value of derivative	55.5	'	55.5	'	184.3
Index Futures [Member] | Derivative Instruments [Member] | Not Designated as Hedging Instrument [Member]	'	'	'	'	'
Available-for-Sale Securities	'	'	'	'	'
Number of positions of derivative	6	'	6	'	6
Notional value of derivative	89.8	'	89.8	'	66.6
Foreign Exchange Forward [Member] | Available-for-sale Securities [Member]	'	'	'	'	'
Available-for-sale securities	'	'	'	'	'
Assets	'	'	'	'	-0.1
Foreign Exchange Forward [Member] | Available-for-sale Securities [Member] | Seeded Investment Products [Member]	'	'	'	'	'
Available-for-sale securities	'	'	'	'	'
Assets	-0.1	'	-0.1	'	-0.1
Foreign Exchange Forward [Member] | Derivative Instruments [Member] | Not Designated as Hedging Instrument [Member]	'	'	'	'	'
Available-for-Sale Securities	'	'	'	'	'
Number of positions of derivative	6	'	6	'	6
Notional value of derivative	3.2	'	3.2	'	93.6
Futures Contract [Member]	'	'	'	'	'
Net gains (losses):	'	'	'	'	'
Gain (loss) on derivatives not designated as hedging	($0.80)	($13.70)	($5.20)	($20.50)	'

INVESTMENT_SECURITIES_Details_

INVESTMENT SECURITIES (Details 2) (USD $)	Sep. 30, 2014	Dec. 31, 2013
In Millions, unless otherwise specified
Assets	'	'
Gross amounts, Assets	'	$1
Gross amounts offset, assets	'	-0.5
Net amount, Assets	'	0.5
Liabilities	'	'
Gross amounts, Liabilities	'	3.4
Gross amounts offset, Liabilities	'	-1.9
Net amount, Liabilities	'	1.5
Index Swap [Member]	'	'
Assets	'	'
Gross amounts, Assets	'	0.1
Gross amounts offset, assets	'	-0.1
Liabilities	'	'
Gross amounts, Liabilities	'	1.5
Gross amounts offset, Liabilities	'	-1.5
Foreign Exchange Forward [Member]	'	'
Liabilities	'	'
Gross amounts, Liabilities	'	1.5
Net amount, Liabilities	'	1.5
Index Futures [Member]	'	'
Assets	'	'
Gross amounts, Assets	0.9	0.9
Gross amounts offset, assets	'	-0.4
Net amount, Assets	0.9	0.5
Liabilities	'	'
Gross amounts, Liabilities	'	0.4
Gross amounts offset, Liabilities	'	-0.4
Index Futures [Member] | Cash Collateral [Member]	'	'
Assets	'	'
Gross amounts, Assets	$2.10	$4.80

FAIR_VALUE_MEASUREMENTS_Detail

FAIR VALUE MEASUREMENTS (Details) (USD $)	Sep. 30, 2014	Dec. 31, 2013
In Millions, unless otherwise specified
Assets	'	'
Derivative assets	'	$0.50
Total investment securities	341.2	485.5
Liabilities	'	'
Derivative liabilities	'	1.5
Redeemable noncontrolling interests	4.8	7.3
Fair Value, Measurements, Recurring [Member] | Estimate of Fair Value Measurement [Member]	'	'
Assets	'	'
Cash equivalents	275.9	199
Total investment securities	341.2	485.5
Total assets	618	685.5
Liabilities	'	'
Current portion of long-term debt	'	101.3
Long-term debt	548.6	532.5
Foreign currency forward contracts	'	1.5
Total liabilities	'	637.2
Redeemable noncontrolling interests	4.8	7.3
Fair Value, Measurements, Recurring [Member] | Estimate of Fair Value Measurement [Member] | Seeded Investment Products [Member]	'	'
Assets	'	'
Trading securities	315.9	312.9
Available-for-sale securities, Estimated fair value	8.5	10.7
Fair Value, Measurements, Recurring [Member] | Estimate of Fair Value Measurement [Member] | Advised Funds [Member]	'	'
Assets	'	'
Trading securities	4.3	45.5
Fair Value, Measurements, Recurring [Member] | Estimate of Fair Value Measurement [Member] | Deferred Compensation Hedge Asset [Member]	'	'
Assets	'	'
Trading securities	12.5	14.9
Fair Value, Measurements, Recurring [Member] | Estimate of Fair Value Measurement [Member] | Debt Securities [Member]	'	'
Assets	'	'
Available-for-sale securities, Estimated fair value	'	101.5
Fair Value, Measurements, Recurring [Member] | Estimate of Fair Value Measurement [Member] | Index Swap [Member]	'	'
Assets	'	'
Derivative assets	'	0.1
Liabilities	'	'
Derivative liabilities	'	1.5
Fair Value, Measurements, Recurring [Member] | Estimate of Fair Value Measurement [Member] | Index Futures [Member]	'	'
Assets	'	'
Derivative assets	0.9	0.9
Liabilities	'	'
Derivative liabilities	'	0.4
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member]	'	'
Assets	'	'
Total investment securities	184.8	337
Total assets	185.7	337
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Seeded Investment Products [Member]	'	'
Assets	'	'
Trading securities	159.5	265.9
Available-for-sale securities, Estimated fair value	8.5	10.7
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Advised Funds [Member]	'	'
Assets	'	'
Trading securities	4.3	45.5
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Deferred Compensation Hedge Asset [Member]	'	'
Assets	'	'
Trading securities	12.5	14.9
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Index Futures [Member]	'	'
Assets	'	'
Derivative assets	0.9	'
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]	'	'
Assets	'	'
Cash equivalents	275.9	199
Total investment securities	156.4	148.5
Total assets	432.3	348.5
Liabilities	'	'
Current portion of long-term debt	'	101.3
Long-term debt	548.6	532.5
Foreign currency forward contracts	'	1.5
Total liabilities	'	637.2
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Seeded Investment Products [Member]	'	'
Assets	'	'
Trading securities	156.4	47
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Debt Securities [Member]	'	'
Assets	'	'
Available-for-sale securities, Estimated fair value	'	101.5
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Index Swap [Member]	'	'
Assets	'	'
Derivative assets	'	0.1
Liabilities	'	'
Derivative liabilities	'	1.5
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Index Futures [Member]	'	'
Assets	'	'
Derivative assets	'	0.9
Liabilities	'	'
Derivative liabilities	'	0.4
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]	'	'
Liabilities	'	'
Redeemable noncontrolling interests	$4.80	$7.30

FAIR_VALUE_MEASUREMENTS_Detail1

FAIR VALUE MEASUREMENTS (Details 2) (USD $)	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2014
In Millions, unless otherwise specified			Intech Investment Management Llc [Member]	Intech Investment Management Llc [Member]
			Minimum [Member]	Maximum
Significant unobservable inputs	'	'	'	'
Transfers from Level 1 to Level 2	$5.50	'	'	'
Transfers from Level 2 to Level 1	$0.40	$13.40	'	'
Valuation analysis multiple	'	'	8	13

FAIR_VALUE_MEASUREMENTS_Detail2

FAIR VALUE MEASUREMENTS (Details 3) (USD $)	3 Months Ended		9 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Changes in fair value	'	'	'	'
Distributions	'	'	($0.90)	($1.60)
Purchase of redeemable noncontrolling interests	'	'	-0.9	-0.3
Change in fair value	'	'	1.6	1.7
Fair Value, Inputs, Level 3 [Member] | Fair Value, Measurements, Recurring [Member] | Redeemable noncontrolling interest [Member]	'	'	'	'
Changes in fair value	'	'	'	'
Balance at the beginning of the year	4.6	40.3	7.3	42.9
Distributions	-0.2	-0.1	-0.7	-4.3
Current earnings	0.1	0.7	0.4	2.8
Purchase of redeemable noncontrolling interests	'	-33.8	-0.6	-33.8
Vesting of noncontrolling interests	'	'	'	1.2
Change in fair value	0.3	'	-1.6	-1.7
Balance at the end of the year	$4.80	$7.10	$4.80	$7.10

DEBT_Details

DEBT (Details) (USD $)

3 Months Ended

9 Months Ended

9 Months Ended

1 Months Ended

9 Months Ended

9 Months Ended

0 Months Ended

0 Months Ended

9 Months Ended

In Millions, except Per Share data, unless otherwise specified

Sep. 30, 2014

Sep. 30, 2013

Jun. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Dec. 31, 2013

Sep. 30, 2014

Dec. 31, 2013

Sep. 30, 2014

Dec. 31, 2013

Sep. 30, 2014

Jun. 30, 2014

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Jun. 30, 2013

Sep. 30, 2014

Jun. 30, 2014

Dec. 31, 2013

Sep. 30, 2014

Sep. 30, 2014

Dec. 31, 2013

Sep. 30, 2014

Dec. 31, 2013

Sep. 30, 2014

Jun. 30, 2014

Dec. 31, 2013

Jul. 15, 2014

Dec. 31, 2013

Dec. 31, 2013

Jun. 30, 2014

Dec. 31, 2013

Sep. 30, 2014

Dec. 31, 2013

Apr. 15, 2014

Sep. 30, 2014

Dec. 31, 2013

Sep. 30, 2014

Reported Value Measurement [Member]

Reported Value Measurement [Member]

Estimate of Fair Value Measurement [Member]

Estimate of Fair Value Measurement [Member]

Senior Notes Excluding Convertible Senior Notes [Member]

Senior Notes 6700 Percent Due 2017 [Member]

Senior Notes 6700 Percent Due 2017 [Member]

Senior Notes 6700 Percent Due 2017 [Member]

Senior Notes 6700 Percent Due 2017 [Member]

Convertible Senior Notes 0.750 Percent Due 2018 [Member]

Convertible Senior Notes 0.750 Percent Due 2018 [Member]

Convertible Senior Notes 0.750 Percent Due 2018 [Member]

Convertible Senior Notes 0.750 Percent Due 2018 [Member]

Convertible Senior Notes 0.750 Percent Due 2018 [Member]

Convertible Senior Notes 0.750 Percent Due 2018 [Member]

Convertible Senior Notes 0.750 Percent Due 2018 [Member]

Convertible Senior Notes 0.750 Percent Due 2018 [Member]

Convertible Senior Notes 0.750 Percent Due 2018 [Member]

Convertible Senior Notes 3.250 Percent Due 2014 [Member]

Convertible Senior Notes 3.250 Percent Due 2014 [Member]

Convertible Senior Notes 3.250 Percent Due 2014 [Member]

Convertible Senior Notes 3.250 Percent Due 2014 [Member]

Convertible Senior Notes 3.250 Percent Due 2014 [Member]

Convertible Senior Notes 3.250 Percent Due 2014 [Member]

Senior Notes 6119 Percent Due 2014 [Member]

Senior Notes 6119 Percent Due 2014 [Member]

Senior Notes 6119 Percent Due 2014 [Member]

Senior Notes 6119 Percent Due 2014 [Member]

Senior Notes 6119 Percent Due 2014 [Member]

Senior Notes 6119 Percent Due 2014 [Member]

Senior Notes 6119 Percent Due 2014 [Member]

Unsecured Revolving Credit Facility [Member]

Reported Value Measurement [Member]

Estimate of Fair Value Measurement [Member]

Minimum [Member]

Reported Value Measurement [Member]

Reported Value Measurement [Member]

Estimate of Fair Value Measurement [Member]

Estimate of Fair Value Measurement [Member]

item

Subsequent Event [Member]

Reported Value Measurement [Member]

Estimate of Fair Value Measurement [Member]

Reported Value Measurement [Member]

Reported Value Measurement [Member]

Reported Value Measurement [Member]

Estimate of Fair Value Measurement [Member]

Estimate of Fair Value Measurement [Member]

Subsequent Event [Member]

Components of debt

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Interest rate (as a percent)

'

'

'

'

'

'

'

'

'

'

'

3.25%

3.25%

'

'

'

'

6.70%

6.70%

'

'

'

'

'

'

6.12%

6.12%

'

'

'

0.75%

0.75%

'

'

'

'

'

'

Total

'

'

'

'

'

'

$449.80

$544.60

$548.60

$633.80

'

'

'

$58

$61.80

'

'

'

'

'

$344.40

$344.40

$384.30

$383.70

'

'

'

'

$38.90

$39.50

'

'

$105.40

$103.30

'

$164.30

$148.80

'

Less: Current maturities

'

'

'

'

'

-96.9

'

-96.9

'

-101.3

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Total long-term debt

449.8

'

'

449.8

'

447.7

449.8

447.7

548.6

532.5

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Other Disclosures

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Actual increase (decrease) in interest rate (as a percent)

'

'

'

'

'

'

'

'

'

'

0.25%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Maximum increase in interest rate (as a percent)

'

'

'

'

'

'

'

'

'

'

2.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Decrease in interest rate for each level of increase in debt rating (as a percent)

'

'

'

'

'

'

'

'

'

'

0.25%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Credit facility, maximum borrowing capacity

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

200

Credit facility covenant terms, financing leverage ratio, maximum

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

3

Credit facility covenant terms, interest coverage ratio, minimum

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

4

Borrowings under the Credit Facility

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

0

Carrying value of obligations

1.1

'

'

1.1

'

1.8

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Principal amount paid

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

$60

'

'

'

'

'

'

$38.90

'

'

'

Conversion rate, shares per $1,000 principal amount

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

92.06

92.22

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

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

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

$10.86

$10.84

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Share price (in dollars per share)

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

$14.10

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Dividends paid per share

$0.08

$0.07

$0.07

$0.23

$0.14

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

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

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

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

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

$12.60

$12.58

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

INCOME_TAXES_Details

INCOME TAXES (Details) (USD $)	3 Months Ended		9 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
INCOME TAXES	'	'	'	'
Effective tax rate (as a percent)	36.70%	37.80%	41.10%	39.20%
Increase in effective tax rate (as a percent)	-1.10%	'	1.90%	'
Reserves for income tax contingencies	$5.70	'	$5.70	'
Accrual of additional reserves for income tax contingencies	0.2	-0.1	'	'
Net tax expense related to accrued additional reserves in income tax contingency reserves	0.1	-0.1	'	'
Anticipated decrease in income tax contingency reserves in the next 12 months	$1.30	'	$1.30	'

NONCONTROLLING_INTERESTS_Detai

NONCONTROLLING INTERESTS (Details) (USD $)	3 Months Ended		9 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Noncontrolling interests in net income	'	'	'	'
Total noncontrolling interests in net income	($0.30)	$3	$0.90	$5.70
Nonredeemable noncontrolling interests	'	'	'	'
Total nonredeemable noncontrolling interests	43.8	'	43.8	'
Rollforward of noncontrolling interests in consolidated seed investment products	'	'	'	'
Balance at the beginning of the year	'	'	13.7	'
Balance at the end of the year	43.8	'	43.8	'
Seeded Investment Products [Member]	'	'	'	'
Noncontrolling interests in net income	'	'	'	'
Nonredeemable noncontrolling interests	-0.6	2	-0.2	2.1
Nonredeemable noncontrolling interests	'	'	'	'
Total nonredeemable noncontrolling interests	38.8	33.9	38.8	33.9
Rollforward of noncontrolling interests in consolidated seed investment products	'	'	'	'
Balance at the beginning of the year	14.4	26.1	8.8	12.4
Change in market value	-0.6	2	-0.2	2.1
Change in ownership	25	5.8	30.2	19.4
Balance at the end of the year	38.8	33.9	38.8	33.9
INTECH	'	'	'	'
Noncontrolling interests in net income	'	'	'	'
Nonredeemable noncontrolling interests	0.2	0.3	0.7	0.8
Redeemable noncontrolling interests	0.1	0.7	0.4	2.8
Nonredeemable noncontrolling interests	'	'	'	'
Total nonredeemable noncontrolling interests	5	'	5	'
Rollforward of noncontrolling interests in consolidated seed investment products	'	'	'	'
Balance at the beginning of the year	'	'	4.9	'
Balance at the end of the year	$5	'	$5	'

NONCONTROLLING_INTERESTS_Detai1

NONCONTROLLING INTERESTS (Details 2) (USD $)	Sep. 30, 2014	Dec. 31, 2013	Sep. 30, 2014	Jun. 30, 2014	Dec. 31, 2013	Mar. 14, 2014	Feb. 03, 2014	Sep. 30, 2014	Dec. 31, 2013
In Millions, unless otherwise specified			Intech Founders [Member]	Intech Founders [Member]	Intech Founders [Member]	Perkins Investment Management LLC [Member]	Perkins Investment Management LLC [Member]	Intech Investment Management LLC and Perkins Investment Management LLC [Member]	Intech Investment Management LLC and Perkins Investment Management LLC [Member]
Redeemable Noncontrolling Interests	'	'	'	'	'	'	'	'	'
Undistributed earnings attributable to redeemable noncontrolling interests	($0.70)	$1.40	'	'	'	'	'	'	'
Redeemable noncontrolling interests	4.8	7.3	5.5	'	5.3	'	'	5.5	5.9
Remaining interest (as a percent)	'	'	'	1.00%	1.00%	'	0.40%	'	'
Noncontrolling ownership units redeemed at fair value	'	'	'	'	'	$0.60	'	'	'

LONGTERM_INCENTIVE_COMPENSATIO1

LONG-TERM INCENTIVE COMPENSATION (Details) (USD $)

3 Months Ended

9 Months Ended

1 Months Ended

9 Months Ended

3 Months Ended

9 Months Ended

1 Months Ended

9 Months Ended

In Millions, except Per Share data, unless otherwise specified

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Oct. 23, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Oct. 23, 2014

Oct. 23, 2014

Oct. 23, 2014

Sep. 30, 2014

Intech Investment Management Llc [Member]

Restricted Stock [Member]

Mutual Fund Share Awards [Member]

Deferred Compensation Plans [Member]

Deferred Compensation Plans [Member]

Deferred Compensation Plans [Member]

Deferred Compensation Plans [Member]

Appreciation Rights [Member]

Profits Interests [Member]

Phantom Interests [Member]

Profits and Phantom Interests Member

Intech Investment Management Llc [Member]

Intech Investment Management Llc [Member]

Intech Investment Management Llc [Member]

Intech Investment Management Llc [Member]

Scenario, Forecast [Member]

Long-term incentive compensation expense

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Long-term incentive awards granted

'

'

$55.50

'

'

$32.80

$22.70

'

'

'

'

'

'

'

'

Long-term incentive awards granted

'

'

'

'

'

'

'

'

'

'

'

23.2

'

'

'

Vesting period

'

'

'4 years

'

'

'

'

'

'

'

'

'10 years

'10 years

'5 years

'

Number of price-vesting units granted

'

'

'

'

'

3

'

'

'

'

'

'

'

'

'

Weighted average price per share (in dollars per share)

'

'

'

'

'

$10.95

'

'

'

'

'

'

'

'

'

Total long-term incentive compensation

$11.60

$15.80

$36.10

$45.30

'

'

'

$0.90

$2.40

$3.30

$5.70

'

'

'

$2

Percentage of economic stake as pre-incentive profits

'

'

'

'

12.00%

'

'

'

'

'

'

'

'

'

'

Maximum period for which distribution are made under profits interests post employment

'

'

'

'

'

'

'

'

'

'

'

'

'10 years

'

'

OTHER_INCOME_EXPENSE_NET_Detai

OTHER INCOME (EXPENSE), NET (Details) (USD $)	3 Months Ended		9 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
OTHER (EXPENSE) INCOME, NET	'	'	'	'
Dividend income	$0.40	$0.40	$1.30	$1.10
Interest income	0.2	0.1	0.5	0.4
Foreign currency (losses) gains, net	-1.7	0.3	-1.9	0.2
Other, net	'	'	'	0.1
Total other (expense) income, net	($1.10)	$0.80	($0.10)	$1.80

ACCUMULATED_OTHER_COMPREHENSIV2

ACCUMULATED OTHER COMPREHENSIVE (LOSS) INCOME (Details) (USD $)

3 Months Ended

9 Months Ended

3 Months Ended

9 Months Ended

In Millions, unless otherwise specified

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2014

Jun. 30, 2014

Dec. 31, 2013

Jun. 30, 2013

Accumulated Net Unrealized Investment Gain (Loss) [Member]

Accumulated Net Unrealized Investment Gain (Loss) [Member]

Accumulated Net Unrealized Investment Gain (Loss) [Member]

Accumulated Net Unrealized Investment Gain (Loss) [Member]

Accumulated Translation Adjustment [Member]

Accumulated Translation Adjustment [Member]

Accumulated Translation Adjustment [Member]

Accumulated Translation Adjustment [Member]

Accumulated Translation Adjustment [Member]

Changes in accumulated other comprehensive loss, net of tax

'

'

'

'

'

'

'

'

'

'

'

'

'

Beginning balance

$0.70

($1.20)

($1.10)

$0.60

$3

$1.10

$1.20

$1.40

($0.80)

($2.30)

($2.30)

($2.30)

($2.30)

Other comprehensive gain (loss) before reclassifications

'

0.7

2.3

0.6

'

0.7

2.3

0.6

'

'

'

'

'

Amounts reclassified from accumulated other comprehensive (loss) income to:

'

'

'

'

'

'

'

'

'

'

'

'

'

Investment gains, net

-1.8

-0.7

-2.3

-0.9

-1.8

-0.7

-2.3

-0.9

'

'

'

'

'

Other (expense) income, net

'

'

'

-1.5

'

'

'

'

-1.5

'

'

'

'

Total other comprehensive loss, net of tax

-1.8

'

'

-1.8

-1.8

'

'

-0.3

-1.5

'

'

'

'

Ending balance

($1.10)

($1.20)

($1.10)

($1.20)

$1.20

$1.10

$1.20

$1.10

($2.30)

($2.30)

($2.30)

($2.30)

($2.30)

EARNINGS_PER_SHARE_Details

EARNINGS PER SHARE (Details) (USD $)	3 Months Ended			9 Months Ended
In Millions, except Per Share data, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Jun. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
EARNINGS PER SHARE	'	'	'	'	'
Net income attributable to JCG	$40.90	$32.60	'	$107.70	$76.40
Less: Allocation of earnings to participating restricted stock awards	1.4	'	'	3.6	'
Net income attributable to JCG common shareholders	$39.50	$32.60	'	$104.10	$76.40
Basic earnings per share attributable to JCG common shareholders	'	'	'	'	'
Weighted average common shares outstanding	181.4	184.7	'	183	184.8
Basic earnings per share (in dollars per share)	$0.22	$0.18	'	$0.57	$0.41
Diluted earnings per share attributable to JCG common shareholders	'	'	'	'	'
Weighted average common shares outstanding	181.4	184.7	'	183	184.8
Incremental common shares	1.4	1.7	'	1	1.2
Weighted average diluted common shares outstanding	182.8	186.4	'	184	186
Diluted earnings per share (in dollars per share)	$0.22	$0.17	'	$0.57	$0.41
Dividends paid per share	$0.08	$0.07	$0.07	$0.23	$0.14
Employee Stock Option [Member]	'	'	'	'	'
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	1.8	7	'	3.4	7
Other Stock Options [Member]	'	'	'	'	'
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
Restricted Stock and Price Vesting Units [Member]	'	'	'	'	'
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	0.1	0.2	'	0.1	1

LITIGATION_AND_OTHER_REGULATOR1

LITIGATION AND OTHER REGULATORY MATTERS (Details) (Pending Litigation [Member], USD $)	Sep. 30, 2014
In Millions, unless otherwise specified
Pending Litigation [Member]	'
Litigation and Other Regulatory Matters	'
Litigation accrual	$0.20

ACQUISITION_OF_VS_HOLDINGS_INC1

ACQUISITION OF VS HOLDINGS INC (Details) (VelocityShares, Subsequent Event [Member], USD $)	0 Months Ended
	Oct. 13, 2014	Oct. 13, 2014
VelocityShares | Subsequent Event [Member]	'	'
Acquisition of VS Holdings Inc	'	'
VelocityShares-branded products in assets	'	$2,000,000,000
Initial upfront cash consideration	30,000,000	'
Contingent cash consideration if certain revenue targets are achieved	'	$36,000,000
Period of time for achievement of certain revenue targets	'4 years	'