CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Millions, unless otherwise specified	3 Months Ended
Mar. 31, 2015	Mar. 31, 2014
Cash flow from (used in) operating activities:
Net income	$ 220.7us-gaap_ProfitLoss	$ 159.4us-gaap_ProfitLoss
Adjustments to reconcile Net income to net Cash flow from operating activities:
Intangible amortization and impairments	27.8us-gaap_AmortizationOfIntangibleAssets	27.4us-gaap_AmortizationOfIntangibleAssets
Depreciation and other amortization	4.4amg_DepreciationAndOtherAmortization	3.8amg_DepreciationAndOtherAmortization
Deferred income tax provision	34.1us-gaap_DeferredIncomeTaxExpenseBenefit	15.1us-gaap_DeferredIncomeTaxExpenseBenefit
Imputed interest expense and contingent payment arrangements	(27.2)	22.5
Income from equity method investments, net of amortization	(53.1)	(46.2)
Distributions received from equity method investments	153.8	208.2
Share-based compensation and Affiliate equity expense	17.3us-gaap_ShareBasedCompensation	14.1us-gaap_ShareBasedCompensation
Other non-cash items	2.7us-gaap_OtherNoncashIncomeExpense	8.8us-gaap_OtherNoncashIncomeExpense
Changes in assets and liabilities:
Increase in receivables	(72.4)	(66.5)
(Increase) decrease in other assets	(5.6)	1.9
Decrease in payables, accrued liabilities and other liabilities	(183.4)	(50.8)
Cash flow from operating activities	119.1	297.7
Cash flow from (used in) investing activities:
Investments in Affiliates	0	(108.9)
Purchase of fixed assets	(4.7)	(4.1)
Purchase of investment securities	(1.4)	(2.5)
Sale of investment securities	1.8	1.2
Cash flow used in investing activities	(4.3)	(114.3)
Cash flow from (used in) financing activities:
Borrowings of senior debt	523.3	696.5
Repayments of senior debt and convertible securities	(496.0)	(425.6)
Issuance of common stock	43.6	6.8
Repurchase of common stock	(197.8)	0
Note and contingent payments	5.9	5.1
Distributions to non-controlling interests	(114.6)	(219.0)
Affiliate equity issuances and repurchases	(13.1)	0.2
Excess tax benefit from share-based compensation	34.5	33.1
Other financing items	(3.3)	(3.0)
Cash flow from (used in) financing activities	(217.5)	94.1
Effect of foreign exchange rate changes on cash and cash equivalents	(9.7)	0
Net decrease in cash and cash equivalents	(112.4)	277.5
Cash and cash equivalents at beginning of period	550.6	469.6
Cash and cash equivalents at end of period	438.2	747.1
Supplemental disclosure of non-cash financing activities:
Settlement of 2006 junior convertible securities	0	217.8
Stock issued under other incentive plans	9.5amg_StockIssuedUnderOtherIncentivePlans	61.6amg_StockIssuedUnderOtherIncentivePlans
Stock received in settlement of liability	3.1	44.0
Payables recorded for Affiliate equity repurchases	$ 12.9	$ 55.2

The aggregate expense charged against earnings to allocate the cost of tangible assets to periods in which the assets are used and held and to allocate the cost of issuing debt to periods in which the debt is outstanding. As a noncash expense, this element is added back to net income when calculating cash provided by (used in) operations using the indirect method.

No definition available.