Commitments and Contingencies - Narrative (Details) - USD ($)	6 Months Ended
	Jun. 30, 2019	Dec. 31, 2018
Other Commitments [Line Items]
Letters of Credit Outstanding, Amount	$ 203,000,000
Advances from FHLB	926,000,000	$ 926,000,000
COLI asset value	378,000,000
Value of guarantees on COLI	186,000,000
Investments
Other Commitments [Line Items]
Investment commitment	3,192,000,000	3,036,000,000
Athene Global Funding | Senior notes
Other Commitments [Line Items]
Maximum borrowing capacity	10,000,000,000
Athene Global Funding | Funding Agreements
Other Commitments [Line Items]
Interest sensitive contract liabilities	3,000,000,000	$ 2,700,000,000
Caldera [Member] | Pending Litigation [Member]
Other Commitments [Line Items]
Loss Contingency, Damages Sought, Value	$ 1,500,000,000