Other Intangible Assets - Reconciliation of VOBA, DAC and DSI to the Condensed Consolidated Balance Sheets (Details) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Finite-Lived Intangible Assets [Line Items]
VOBA	$ 1,446	$ 1,615	$ 1,743
DAC	2,215	1,411
DSI	346	200	127
FIA
Finite-Lived Intangible Assets [Line Items]
VOBA	1,025	1,166	1,314
DAC	1,378	971
DSI	346	200	127
Fixed Rate Annuities
Finite-Lived Intangible Assets [Line Items]
VOBA	27	32	39
DAC	288	83
Immediate Annuities
Finite-Lived Intangible Assets [Line Items]
VOBA	191	201	212
Universal Life
Finite-Lived Intangible Assets [Line Items]
VOBA	134	143	153
DAC	545	348
Traditional Life
Finite-Lived Intangible Assets [Line Items]
VOBA	69	73	$ 25
Funding Agreements
Finite-Lived Intangible Assets [Line Items]
DAC	$ 4	$ 9