Related Party Transactions and Interests in Consolidated Entities - Additional Information (Detail) (USD $) Share data in Millions, unless otherwise specified	1 Months Ended		3 Months Ended			6 Months Ended		12 Months Ended			1 Months Ended		6 Months Ended			12 Months Ended	3 Months Ended		6 Months Ended			3 Months Ended		6 Months Ended				1 Months Ended
	Apr. 30, 2013	Jun. 30, 2008	Jun. 30, 2013	Jun. 30, 2012	Mar. 31, 2011	Jun. 30, 2013	Jun. 30, 2012	Dec. 31, 2012	Jun. 30, 2013 Asia Private Credit ("APC") [Member]	Dec. 31, 2012 Asia Private Credit ("APC") [Member]	May 14, 2013 U.S. federal income tax [Member]	May 14, 2013 Class A Shares [Member]	Jun. 30, 2013 Real Estate Segment [Member]	Mar. 28, 2013 Real Estate Segment [Member]	Dec. 31, 2012 Real Estate Segment [Member]	Dec. 31, 2012 Real Estate Segment [Member] Scenario, Forecast [Member]	Jun. 30, 2013 AAA and AAA Guarantor-Athene L.P. [Member]	Jun. 30, 2012 AAA and AAA Guarantor-Athene L.P. [Member]	Jun. 30, 2013 AAA and AAA Guarantor-Athene L.P. [Member]	Jun. 30, 2012 AAA and AAA Guarantor-Athene L.P. [Member]	Dec. 31, 2012 AAA and AAA Guarantor-Athene L.P. [Member]	Jun. 30, 2013 Athene and Athene Life Re Ltd. [Member]	Jun. 30, 2012 Athene and Athene Life Re Ltd. [Member]	Jun. 30, 2013 Athene and Athene Life Re Ltd. [Member]	Jun. 30, 2012 Athene and Athene Life Re Ltd. [Member]	Jun. 30, 2013 Credit Segment [Member]	Dec. 31, 2012 Credit Segment [Member]	Apr. 30, 2013 Managing Partners [Member]	Apr. 30, 2013 Contributing Partners [Member]
Related Party Transaction [Line Items]
Percentage of amount of cash savings						85.00%
Payments expected to occur						Next 20 years
Payments pursuant to tax receivable agreement						$ 12,100,000
Percentage of payment pursuant to tax receivable agreement						25.00%
Period of payments pursuant to tax receivable agreement						4 years
Cash payment pursuant to the tax receivable agreement with the Managing and Contributing Partners	30,400,000
Interest paid																												7,600,000	300,000
Additional distribution to Holdings																												55,200,000
Intermediate Holding Companies acquired shares of AGM												8.8
U.S. federal income tax basis adjustment											145,700,000
Related liability recorded			78,300,000			78,300,000
Remaining percentage of amount of cash savings						15.00%
Receivable from the contributing partners and certain employee						6,800,000		6,500,000
Amount of management fees waived and related compensation expense				6,800,000			13,600,000
Advisory and transaction fees from affiliates			65,085,000	69,777,000		112,504,000	97,013,000															21,200,000	3,600,000	40,700,000	6,300,000
Due from affiliates			209,280,000			209,280,000		173,312,000									7,100,000		7,100,000		2,100,000	40,900,000		40,900,000
Services Agreement terminate date																			Dec. 31, 2020			Dec. 31, 2014
Management fee including derivative components																	2,500,000	4,400,000	5,600,000	8,900,000
Derivative component charges																	600,000		1,200,000
Unrealized changes in derivative market value recognized			300,000			300,000
Carried interest income		18,900,000
Annual fixed interest rate		3.45%
Reduced loan amount					10,900,000
Outstanding loan						9,400,000
Accrued interest on the outstanding loan obligation						1,400,000
Accrued interest			100,000			100,000
Fair value of contingent consideration liability			107,342,000			107,342,000									1,200,000											13,100,000	14,100,000
General partner obligation return previously distributed carried interest income									300,000	300,000																	3,900,000
Accrued liability to SOMA								19,300,000
Discount rate related to real estate funds																7.00%
Contingent liability paid in cash														500,000
Remaining liability reversed to other income													$ 700,000