Segment Information - Reconciliation of Segment Operating Income to Consolidation (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Income tax (expense) benefit – non-operating	$ (150)	$ (30)	$ 16	$ (62)
Net income (loss) available to Athene Holding Ltd. common shareholders	824	720	(241)	1,428
Operating Segments | Retirement Services
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Net income (loss) available to Athene Holding Ltd. common shareholders	208	376	412	662
Operating Segments | Corporate and Other
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Net income (loss) available to Athene Holding Ltd. common shareholders	282	(6)	(30)	(5)
Non-operating adjustments
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Investment gains (losses), net of offsets	775	417	(364)	875
Change in fair values of derivatives and embedded derivatives – index annuities, net of offsets	(405)	(57)	(340)	(84)
Integration, restructuring and other non-operating expenses	(9)	(11)	(13)	(12)
Stock-based compensation, excluding LTIP	0	(3)	(10)	(6)
Income tax (expense) benefit – non-operating	$ (27)	$ 4	$ 104	$ (2)