Derivative Instruments (Narrative) (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2022	Dec. 31, 2021
Derivative [Line Items]
Cash Flow Hedge Gain (Loss) to be Reclassified within Twelve Months	$ 18
Credit Default Swaps Referencing Indices, Sell Protection
Derivative [Line Items]
Credit Derivative, Maximum Exposure, Undiscounted	2,080	$ 157
Credit Risk Derivatives, at Fair Value, Net		11
Credit Risk Derivative Liabilities, at Fair Value	3
Credit Default Swaps Referencing Indices, Sell Protection | NAIC 3
Derivative [Line Items]
Credit Derivative, Maximum Exposure, Undiscounted	1,981
Credit Default Swaps Referencing Indices, Sell Protection | NAIC 6
Derivative [Line Items]
Credit Derivative, Maximum Exposure, Undiscounted	99
Credit Default Swap, Buying Protection
Derivative [Line Items]
Credit Derivative, Maximum Exposure, Undiscounted	0	150
Credit Risk Derivatives, at Fair Value, Net	0	14
Future Policy Benefits
Derivative [Line Items]
Embedded Derivative, Fair Value of Embedded Derivative Asset (Liability), Net	(5,707)	(9,048)
Reinsurance Recoverables
Derivative [Line Items]
Embedded Derivative, Fair Value of Embedded Derivative Asset (Liability), Net	555	931
Policyholders' account balances
Derivative [Line Items]
Embedded Derivative, Fair Value of Embedded Derivative Asset (Liability), Net	(3,428)	(3,246)
Other assets
Derivative [Line Items]
Embedded Derivative, Fair Value of Embedded Derivative Asset (Liability), Net	76	73
Other Liabilities
Derivative [Line Items]
Embedded Derivative, Fair Value of Embedded Derivative Asset (Liability), Net	$ (24)	$ (13)