DAC, VOBA, DSI and DFEL - Narrative (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Investments, Debt and Equity Securities [Abstract]
DAC amortization	$ 987	$ 964	$ 958
VOBA amortization	53	60	77
DSI amortization	19	19	23
DFEL amortization	$ 288	$ 257	$ 220