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Reinsurance (Narrative) (Details) - Athene Holding Ltd. [Member] $ in Millions | Sep. 30, 2019 USD ($)
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Ceded Credit Risk [Line Items] |
Deposit assets | $ 7,200
Athene Holding Ltd. [Member] |
Ceded Credit Risk [Line Items] |
Reserves associated with modified coinsurance reinsurance arrangements | 210
Letter of credit | 200
AFS Securities [Member] |
Ceded Credit Risk [Line Items] |
Deposit assets | 2,700
Trading Securities [Member] |
Ceded Credit Risk [Line Items] |
Deposit assets | 3,300
Equity Securities [Member] |
Ceded Credit Risk [Line Items] |
Deposit assets | 64
Commercial Mortgage Loans [Member] |
Ceded Credit Risk [Line Items] |
Deposit assets | 652
Derivative Instruments [Member] |
Ceded Credit Risk [Line Items] |
Deposit assets | 114
Other Investments [Member] |
Ceded Credit Risk [Line Items] |
Deposit assets | 65
Cash [Member] |
Ceded Credit Risk [Line Items] |
Deposit assets | 167
Investment Income [Member] |
Ceded Credit Risk [Line Items] |
Deposit assets | 60
Other Assets [Member] |
Ceded Credit Risk [Line Items] |
Deposit assets | $ 60

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