Earnings Per Share - Schedule of EPS (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Net income (loss) available to Athene Holding Ltd. common shareholders	$ 578	$ (1,065)
Common Class A
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Net income (loss) available to Athene Holding Ltd. common shareholders	578	(938)
Net income available to AHL shareholders – diluted	$ 578	$ (938)
Basic weighted average shares outstanding (in shares)	191.3	161.4
Dilutive effect of stock compensation plans (in shares)	5.5	0.0
Diluted weighted average shares outstanding (in shares)	196.8	161.4
Earnings per share
Basic (in USD per share)	$ 3.02	$ (5.81)
Diluted (in USD per share)	$ 2.94	$ (5.81)
Common Class B
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Net income (loss) available to Athene Holding Ltd. common shareholders		$ (98)
Net income available to AHL shareholders – diluted		$ (98)
Basic weighted average shares outstanding (in shares)		25.4
Dilutive effect of stock compensation plans (in shares)		0.0
Diluted weighted average shares outstanding (in shares)		25.4
Earnings per share
Basic (in USD per share)		$ (3.87)
Diluted (in USD per share)		$ (3.87)
Common Class M-1
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Net income (loss) available to Athene Holding Ltd. common shareholders		$ (13)
Net income available to AHL shareholders – diluted		$ (13)
Basic weighted average shares outstanding (in shares)		3.3
Dilutive effect of stock compensation plans (in shares)		0.0
Diluted weighted average shares outstanding (in shares)		3.3
Earnings per share
Basic (in USD per share)		$ (3.87)
Diluted (in USD per share)		$ (3.87)
Common Class M-2
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Net income (loss) available to Athene Holding Ltd. common shareholders		$ (3)
Net income available to AHL shareholders – diluted		$ (3)
Basic weighted average shares outstanding (in shares)		0.8
Dilutive effect of stock compensation plans (in shares)		0.0
Diluted weighted average shares outstanding (in shares)		0.8
Earnings per share
Basic (in USD per share)		$ (3.87)
Diluted (in USD per share)		$ (3.87)
Common Class M-3
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Net income (loss) available to Athene Holding Ltd. common shareholders		$ (4)
Net income available to AHL shareholders – diluted		$ (4)
Basic weighted average shares outstanding (in shares)		1.0
Dilutive effect of stock compensation plans (in shares)		0.0
Diluted weighted average shares outstanding (in shares)		1.0
Earnings per share
Basic (in USD per share)		$ (3.87)
Diluted (in USD per share)		$ (3.87)
Common Class M-4
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Net income (loss) available to Athene Holding Ltd. common shareholders		$ (9)
Net income available to AHL shareholders – diluted		$ (9)
Basic weighted average shares outstanding (in shares)		2.4
Dilutive effect of stock compensation plans (in shares)		0.0
Diluted weighted average shares outstanding (in shares)		2.4
Earnings per share
Basic (in USD per share)		$ (3.87)
Diluted (in USD per share)		$ (3.87)