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Reinsurance (Narrative) (Details) - USD ($) $ in Millions | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Ceded Credit Risk [Line Items] |  |  |
Reinsurance, ACL | $ 190 | $ 192 |
Maximum retention per single insured life on fixed and VUL insurance contracts | $ 20 |  |
Percent of mortality risk reinsured on newly issued non-term life insurance contracts | 20.00% |  |
Reinsurance recoverables, net of allowance for credit losses | $ 20,295 | 16,496 |
Swiss Re [Member] |  |  |
Ceded Credit Risk [Line Items] |  |  |
Trust funded to support reinsurance receivable | 1,000 | 1,200 |
Liabilities for reinsurance related embedded derivatives | 143 | 31 |
Reinsurance recoverables, net of allowance for credit losses | 1,100 | 1,200 |
Protective [Member] |  |  |
Ceded Credit Risk [Line Items] |  |  |
Reinsurance recoverables, net of allowance for credit losses | 10,700 | 11,300 |
Reinsurance Recoverable for Paid and Unpaid Claims and Claims Adjustments | 14,000 | 15,200 |
Athene Holding Ltd. [Member] |  |  |
Ceded Credit Risk [Line Items] |  |  |
Reinsurance ACL and deposit assets | 5,000 | 5,800 |
Deferred gain on business sold through reinsurance | 26 | 29 | $ 30
Reserves associated with modified coinsurance reinsurance arrangements | 5,404 | $ 6,144 |
Letter of credit | 146 |  |
Athene Holding Ltd. [Member] | Over-Collateralization [Member] |  |  |
Ceded Credit Risk [Line Items] |  |  |
Reserves associated with modified coinsurance reinsurance arrangements | 157 |  |
Resolution Life [Member] |  |  |
Ceded Credit Risk [Line Items] |  |  |
Amount of amortization, after-tax, of deferred gain on business sold | 10 |  |
Reinsurance recoverables, net of allowance for credit losses | 4,700 |  |
Reinsurance Recoverable for Paid and Unpaid Claims and Claims Adjustments | $ 4,100 |  |

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