AOCI - Schedule of Reclassifications Out of AOCI (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net investment income	$ 1,466	$ 1,332	$ 2,924	$ 2,679
Interest and debt expense	13	(86)	(67)	(167)
Realized gain (loss)	(641)	663	(631)	230
Benefits	(1,994)	(2,008)	(4,062)	(4,011)
Income (loss) before taxes	848	1,096	(101)	2,625
Federal income tax expense (benefit)	(149)	(201)	78	(509)
Net income (loss)	$ 699	$ 895	(23)	2,116
Reclassification out of Accumulated Other Comprehensive Income | Unrealized Gain (Loss) on Fixed Maturity AFS Securities and Certain
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Realized gain (loss)			(143)	(159)
Benefits			26	22
Income (loss) before taxes			(117)	(137)
Federal income tax expense (benefit)			25	29
Net income (loss)			(92)	(108)
Reclassification out of Accumulated Other Comprehensive Income | Unrealized Gain (Loss) on Derivative Instruments
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Interest and debt expense			8	15
Realized gain (loss)			3	(1)
Income (loss) before taxes			39	42
Federal income tax expense (benefit)			(8)	(9)
Net income (loss)			31	33
Reclassification out of Accumulated Other Comprehensive Income | Unrealized Gain (Loss) on Derivative Instruments | Interest rate contracts
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net investment income			1	(1)
Reclassification out of Accumulated Other Comprehensive Income | Unrealized Gain (Loss) on Derivative Instruments | Foreign currency contracts
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net investment income			$ 27	$ 29