Condensed Consolidated Statements of Cash Flows (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Cash flows from operating activities
Net income	$ 427.5	$ 1,494.1
Adjustments to reconcile net income to net cash flows from operating activities:
Depreciation and amortization	43.5	24.2
Amortization of deferred financing fees	0.4	0.4
Equity-based compensation	52.3
Non-cash performance fees	(475.0)	(478.1)
Other non-cash amounts	2.6	(4.1)
Consolidated Funds related:
Realized/unrealized (gain) loss on investments of Consolidated Funds	(586.5)	(1,019.4)
Realized/unrealized loss from loans payable of Consolidated Funds	387.0	158.6
Purchases of investments by Consolidated Funds	(2,934.1)	(1,586.4)
Proceeds from sale and settlements of investments by Consolidated Funds	3,181.4	2,000.5
Non-cash interest income, net	(21.4)	(16.5)
Change in cash and cash equivalents held at Consolidated Funds	679.5	(226.1)
Change in other receivables held at Consolidated Funds	26.9	25.6
Change in other liabilities held at Consolidated Funds	321.6	43.1
Investment income	16.2	(19.6)
Purchases of investments	(54.4)	(10.0)
Proceeds from the sale of investments	108.8	145.7
Purchases of trading securities	(6.2)	(5.0)
Changes in deferred taxes	11.2	7.6
Change in due from affiliates and other receivables	(3.6)	(11.9)
Change in deposits and other	2.1	(8.7)
Change in accounts payable, accrued expenses and other liabilities	(3.8)	(22.4)
Change in accrued compensation and benefits	152.0	(95.8)
Change in due to affiliates	(2.1)	(27.5)
Change in deferred revenue	128.9	111.6
Net cash provided by operating activities	1,454.8	479.9
Cash flows from investing activities
Change in restricted cash	(9.3)
Purchases of fixed assets, net	(5.4)	(5.1)
Purchases of intangible assets		(43.1)
Net cash used in investing activities	(14.7)	(48.2)
Cash flows from financing activities
Borrowings under credit facility		313.1
Repayments under credit facility	(386.3)	(55.9)
Issuance of 3.875% senior notes due 2023, net of financing costs	495.3
Issuance of 5.625% senior notes due 2043, net of financing costs	394.1
Payments on loans payable	(475.0)	(270.0)
Net payment on loans payable of Consolidated Funds	(769.3)	(182.9)
Payments of contingent consideration	(10.0)
Distributions to common unitholders	(36.8)
Contributions from predecessor owners		1.1
Distributions to predecessor owners		(199.1)
Contributions from non-controlling interest holders	477.2	631.4
Distributions to non-controlling interest holders	(1,205.0)	(800.8)
Change in due to/from affiliates financing activities	38.5	31.2
Change in due to/from affiliates and other receivables of Consolidated Funds	52.7	107.1
Net cash used in financing activities	(1,424.6)	(424.8)
Effect of foreign exchange rate changes	(12.2)	6.7
Increase in cash and cash equivalents	3.3	13.6
Cash and cash equivalents, beginning of period	567.1	509.6
Cash and cash equivalents, end of period	570.4	523.2
Supplemental non-cash disclosures
Net assets related to consolidation of the CLOs		357.3
Non-cash distributions to predecessor owners		296.6
Non-cash contributions from non-controlling interest holders		73.0
Non-cash distributions to non-controlling interest holders		12.9
Reorganization:
Transfer of partners' capital to non-controlling interests in consolidated entities		$ 127.7