Commitments and Contingencies - Narrative (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
	Mar. 31, 2020	Sep. 30, 2020	Dec. 31, 2019
Other Commitments [Line Items]
Letters of Credit Outstanding, Amount		$ 1,413
Advances from FHLB		2,101	$ 1,226
Interest sensitive contract liabilities		141,207	102,745
COLI asset value		401
Value of guarantees on COLI		196
Litigation Settlement, Expense	$ 45
Investments
Other Commitments [Line Items]
Investment commitment		5,848	4,793
Funding Agreement Backed Repurchase Agreements [Member]
Other Commitments [Line Items]
Interest sensitive contract liabilities		1,000
Athene Global Funding | Senior notes
Other Commitments [Line Items]
Maximum borrowing capacity		2,392
Athene Global Funding | Funding Agreements
Other Commitments [Line Items]
Interest sensitive contract liabilities		6,523	$ 3,700
Caldera [Member] | Pending Litigation [Member]
Other Commitments [Line Items]
Loss Contingency, Damages Sought, Value		$ 1,500