Derivative Instruments (Narrative) (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2024	Dec. 31, 2023
Derivative [Line Items]
Embedded Derivative, Fair Value of Embedded Derivative, Net	$ (9,606)	$ (7,402)
Cash Flow Hedge Gain (Loss) to be Reclassified within Twelve Months	29
Credit Default Swaps Referencing Indices, Sell Protection
Derivative [Line Items]
Credit Derivative, Maximum Exposure, Undiscounted	521	643
Credit Risk Derivatives, at Fair Value, Net Asset	5	$ 8
Credit Default Swaps Referencing Indices, Sell Protection | NAIC 3
Derivative [Line Items]
Credit Derivative, Maximum Exposure, Undiscounted	483
Credit Default Swaps Referencing Indices, Sell Protection | NAIC 6
Derivative [Line Items]
Credit Derivative, Maximum Exposure, Undiscounted	$ 38