Equity-Based Compensation - Activity of AOG Units (Detail) (USD $)	6 Months Ended
	Jun. 30, 2013
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Apollo Operating Group Units, Beginning	1,500,366
Apollo Operating Group Units, Vested	(1,500,366)
Apollo Operating Group Units, Ending
Weighted Average Grant Date Fair Value, Beginning	$ 20.00
Weighted Average Grant Date Fair Value, Vested	$ 20.00
Weighted Average Grant Date Fair Value, Ending