Related Party Transactions and Interests in Consolidated Entities - Amount of Quarterly Distribution (Detail) (USD $)	0 Months Ended							3 Months Ended
	Feb. 26, 2014	Nov. 29, 2013	Aug. 08, 2013	May 06, 2013	Apr. 12, 2013		Feb. 28, 2013	Jun. 30, 2013	Mar. 31, 2014	Feb. 07, 2014	Dec. 31, 2013	Nov. 07, 2013	May 30, 2013	Feb. 08, 2013
Related Party Transaction [Line Items]
Additional Distribution								$ 0.23
Distributions per Class A Share Amount			$ 1.32		$ 0.00				$ 1.08	$ 1.08	$ 3.95	$ 1.01	$ 0.57	$ 1.05
Distributions Payment Date	February 26, 2014	November 29, 2013	August 30, 2013	May 30, 2013	April 12, 2013		February 28, 2013
Total Distributions from Apollo Operating Group			494,900,000		55,200,000		390,700,000		408,200,000	408,200,000	1,532,300,000	378,900,000	212,600,000
Distribution Equivalents on Participating Securities			30,800,000		0		25,000,000		25,500,000	25,500,000	94,200,000	24,100,000	14,300,000
Noncontrolling Interest [Member]
Related Party Transaction [Line Items]
Distributions to Non-Controlling Interest Holders in the Apollo Operating Group			305,200,000		55,200,000	[1]	252,000,000		247,300,000	247,300,000	975,400,000	231,200,000	131,800,000
Common Class A
Related Party Transaction [Line Items]
Distributions to AGM Class A Shareholders			$ 189,700,000		$ 0		$ 138,700,000		$ 160,900,000	$ 160,900,000	$ 556,900,000	$ 147,700,000	$ 80,800,000

[1] On April 12, 2013, the Company made a $0.23 distribution to the non-controlling interest holders in the Apollo Operating Group.