Derivatives - Schedule of Derivatives Not Designated as Hedges (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Derivatives, Fair Value [Line Items]
Total gains (losses) on derivatives not designated as hedges	$ 525	$ (5,996)
Investment related gains (losses)
Derivatives, Fair Value [Line Items]
Total gains (losses) on derivatives not designated as hedges	1,968	(8,764)
Equity options \| Investment related gains (losses)
Derivatives, Fair Value [Line Items]
Total gains (losses) on derivatives not designated as hedges	1,564	(2,647)
Futures \| Investment related gains (losses)
Derivatives, Fair Value [Line Items]
Total gains (losses) on derivatives not designated as hedges	73	(144)
Swaps \| Investment related gains (losses)
Derivatives, Fair Value [Line Items]
Total gains (losses) on derivatives not designated as hedges	(108)	56
Foreign currency forwards \| Investment related gains (losses)
Derivatives, Fair Value [Line Items]
Total gains (losses) on derivatives not designated as hedges	(495)	505
Embedded derivatives on funds withheld \| Investment related gains (losses)
Derivatives, Fair Value [Line Items]
Total gains (losses) on derivatives not designated as hedges	934	(6,534)
Embedded derivatives in indexed annuity products \| Embedded derivatives in indexed annuity products
Derivatives, Fair Value [Line Items]
Total gains (losses) on derivatives not designated as hedges	$ (1,443)	$ 2,768