Segment Reporting - Expenses Adjustment Representing Elimination of Intercompany Expenses (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Operating Statistics [Line Items]
Partner compensation		$ (5.6)		$ 265.4
Equity-based compensation issued in conjunction with the initial public offering and strategic investments	123.1	93.6	175.2	93.6
Acquisition related charges and amortization of intangibles	52.5	21.5	115.0	45.6
Losses associated with debt refinancing activities			(1.9)
Severance and lease terminations	3.5	1.7	4.0	4.1
Other adjustments	0.2	2.8	(0.7)	3.0
Reconciling Items [Member]
Operating Statistics [Line Items]
Partner compensation		5.6		(265.4)
Equity-based compensation issued in conjunction with the initial public offering and strategic investments	123.1	93.6	175.2	93.6
Acquisition related charges and amortization of intangibles	52.5	21.5	115.0	45.6
Losses associated with debt refinancing activities			1.9
Other non-operating expenses	(3.3)	0.7	(5.7)	(3.4)
Severance and lease terminations	3.5	1.7	4.0	4.1
Non-Carlyle economic interests in acquired business	44.5	33.8	123.4	71.8
Other adjustments	(0.2)	(2.8)	0.7	(3.0)
Elimination of expenses of Consolidated Funds	(66.6)	(40.8)	(148.3)	(74.4)
Total expense adjustments	$ 153.5	$ 113.3	$ 266.2	$ (131.1)