Schedule II - Condensed Financial Information of Registrant - Condensed Balance Sheet (Details) - USD ($) $ / shares in Units, $ in Millions	Dec. 31, 2019	Sep. 19, 2019	Jun. 10, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Condensed Financial Statements, Captions [Line Items]
Accumulated other comprehensive income (loss)	$ 2,281			$ (472)	$ 1,449	$ 366
Investment funds	4,300			3,559
Total assets	146,875			125,505
Total liabilities	132,734			117,229
Additional paid-in capital	4,171			3,462
Retained earnings	6,939			5,286
Total Athene Holding Ltd. shareholders’ equity	13,391			8,276
Total liabilities and equity	146,875			125,505
Parent Company [Member]
Condensed Financial Statements, Captions [Line Items]
AFS securities	61			45
Debt Securities, Available-for-sale, Amortized Cost	56			46
Accumulated other comprehensive income (loss)	2,281			(472)
Cash and cash equivalents	171			112	$ 142	$ 189
Investment funds	132			105
Other assets	6			24
Intercompany Receivable	13			21
Intercompany Investments	14,085			9,108
Total assets	14,470			9,415
Long-term debt	992			991
Notes Payable, Related Parties	38			105
Other Liabilities	40			35
Intercompany Payable	9			8
Total liabilities	1,079			1,139
Additional paid-in capital	4,171			3,462
Retained earnings	6,939			5,286
Total Athene Holding Ltd. shareholders’ equity	13,391			8,276
Total liabilities and equity	14,470			9,415
Consolidated Entity Excluding Variable Interest Entities (VIE) and Related Party
Condensed Financial Statements, Captions [Line Items]
AFS securities	71,374			59,265
Debt Securities, Available-for-sale, Amortized Cost	67,479			60,025
Cash and cash equivalents	4,237			2,911
Investment funds	$ 731			703
Series A Preferred Stock [Member]
Condensed Financial Statements, Captions [Line Items]
Preferred Stock, Par or Stated Value Per Share	$ 1.00
Preferred Stock, Shares Issued			34,500
Preferred Stock, Value, Outstanding	$ 0			$ 0
Series A Preferred Stock [Member] | Parent Company [Member]
Condensed Financial Statements, Captions [Line Items]
Preferred Stock, Par or Stated Value Per Share	$ 1			$ 0
Preferred Stock, Liquidation Preference, Value	$ 863			$ 0
Preferred Stock, Shares Authorized	34,500			0
Preferred Stock, Shares Issued	0			0
Preferred Stock, Shares Outstanding	0			0
Series B Preferred Stock [Member]
Condensed Financial Statements, Captions [Line Items]
Preferred Stock, Par or Stated Value Per Share	$ 1.00
Preferred Stock, Shares Issued		13,800
Preferred Stock, Value, Outstanding	$ 0			$ 0
Series B Preferred Stock [Member] | Parent Company [Member]
Condensed Financial Statements, Captions [Line Items]
Preferred Stock, Par or Stated Value Per Share	$ 1			$ 0
Preferred Stock, Liquidation Preference, Value	$ 345			$ 0
Preferred Stock, Shares Authorized	13,800			0
Preferred Stock, Shares Issued	0			0
Preferred Stock, Shares Outstanding	0			0
Common Class A
Condensed Financial Statements, Captions [Line Items]
Common stock outstanding (in shares)	143,200,000			162,400,000	142,400,000	77,300,000
Common stock	$ 0			$ 0
Common Class A | Parent Company [Member]
Condensed Financial Statements, Captions [Line Items]
Common stock issued (in shares)	143,200,000			162,400,000
Common stock, par value (in USD per share)	$ 0.001			$ 0.001
Common stock outstanding (in shares)	143,200,000			162,400,000
Common stock authorized (in shares)	425,000,000			425,000,000
Common stock	$ 0			$ 0
Common Class B
Condensed Financial Statements, Captions [Line Items]
Common stock outstanding (in shares)	25,400,000			25,400,000	47,400,000	111,800,000
Common stock	$ 0			$ 0
Common Class B | Parent Company [Member]
Condensed Financial Statements, Captions [Line Items]
Common stock issued (in shares)	25,400,000			25,400,000
Common stock, par value (in USD per share)	$ 0.001			$ 0.001
Common stock outstanding (in shares)	25,400,000			25,400,000
Common stock authorized (in shares)	325,000,000			325,000,000
Common stock	$ 0			$ 0
Common Class M-1
Condensed Financial Statements, Captions [Line Items]
Common stock outstanding (in shares)	3,300,000			3,400,000	3,400,000	3,500,000
Common stock	$ 0			$ 0
Common Class M-1 | Parent Company [Member]
Condensed Financial Statements, Captions [Line Items]
Common stock issued (in shares)	3,300,000			3,400,000
Common stock, par value (in USD per share)	$ 0.001			$ 0.001
Common stock outstanding (in shares)	3,300,000			3,400,000
Common stock authorized (in shares)	7,100,000			7,100,000
Common stock	$ 0			$ 0
Common Class M-2
Condensed Financial Statements, Captions [Line Items]
Common stock outstanding (in shares)	800,000			800,000	900,000	1,100,000
Common stock	$ 0			$ 0
Common Class M-2 | Parent Company [Member]
Condensed Financial Statements, Captions [Line Items]
Common stock issued (in shares)	800,000			800,000
Common stock, par value (in USD per share)	$ 0.001			$ 0.001
Common stock outstanding (in shares)	800,000			800,000
Common stock authorized (in shares)	5,000,000			5,000,000
Common stock	$ 0			$ 0
Common Class M-3
Condensed Financial Statements, Captions [Line Items]
Common stock outstanding (in shares)	1,000,000.0			1,000,000.0	1,100,000	1,300,000
Common stock	$ 0			$ 0
Common Class M-3 | Parent Company [Member]
Condensed Financial Statements, Captions [Line Items]
Common stock issued (in shares)	1,000,000			1,000,000
Common stock, par value (in USD per share)	$ 0.001			$ 0.001
Common stock outstanding (in shares)	1,000,000			1,000,000
Common stock authorized (in shares)	7,500,000			7,500,000
Common stock	$ 0			$ 0
Common Class M-4
Condensed Financial Statements, Captions [Line Items]
Common stock outstanding (in shares)	4,000,000.0			4,100,000	4,700,000	5,400,000
Common stock	$ 0			$ 0
Common Class M-4 | Parent Company [Member]
Condensed Financial Statements, Captions [Line Items]
Common stock issued (in shares)	4,000,000			4,100,000
Common stock, par value (in USD per share)	$ 0.001			$ 0.001
Common stock outstanding (in shares)	4,000,000			4,100,000
Common stock authorized (in shares)	7,500,000			7,500,000
Common stock	$ 0			$ 0
Related Party
Condensed Financial Statements, Captions [Line Items]
AFS securities				0
Accumulated other comprehensive income (loss)	17			(25)
Related Party | Parent Company [Member]
Condensed Financial Statements, Captions [Line Items]
AFS securities	2
Debt Securities, Available-for-sale, Amortized Cost	$ 2			$ 0