Investments - Investments of AAA (Excluding VIEs) (Detail) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Investments, at fair value	$ 2,236,648	$ 2,012,027
Investment Cost	1,590,140	1,588,961
Percentage of Net Assets of Consolidated Funds	100.10%	100.00%
Equity | Athene Holding Ltd.
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Investments, at fair value	2,168,531	1,950,010
Investment Cost	$ 1,331,942	$ 1,331,942
Percentage of Net Assets of Consolidated Funds	99.70%	98.90%