Derivatives - Schedule of Derivatives Not Designated as Hedges (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Derivatives, Fair Value [Line Items]
Total gains (losses) on derivatives not designated as hedges	$ 201	$ 378
Investment related gains (losses)
Derivatives, Fair Value [Line Items]
Total gains (losses) on derivatives not designated as hedges	1,378	851
Equity options | Investment related gains (losses)
Derivatives, Fair Value [Line Items]
Total gains (losses) on derivatives not designated as hedges	1,597	350
Futures | Investment related gains (losses)
Derivatives, Fair Value [Line Items]
Total gains (losses) on derivatives not designated as hedges	127	34
Swaps | Investment related gains (losses)
Derivatives, Fair Value [Line Items]
Total gains (losses) on derivatives not designated as hedges	39	33
Foreign currency forwards | Investment related gains (losses)
Derivatives, Fair Value [Line Items]
Total gains (losses) on derivatives not designated as hedges	(310)	(169)
Embedded derivatives on funds withheld | Investment related gains (losses)
Derivatives, Fair Value [Line Items]
Total gains (losses) on derivatives not designated as hedges	(75)	603
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	$ (1,177)	$ (473)