Income Tax (Total Income Taxes Provided) (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Accumulated Other Comprehensive Income (Loss) [Line Items]
Provision for income taxes		$ 256	$ 251	$ 197
Other Comprehensive Income (Loss), Tax		(444)	(305)	271
Income Tax Expense (Benefit), Intraperiod Tax Allocation		700	556	(74)
Accumulated Net Unrealized Investment Gain (Loss) [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other Comprehensive Income (Loss), Tax	[1]	(176)	(449)	2,542
AOCI, Liability for Future Policy Benefit, Parent
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other Comprehensive Income (Loss), Tax		586	(161)	2,224
AOCI, Market Risk Benefit, Instrument-Specific Credit Risk, Parent
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other Comprehensive Income (Loss), Tax		0	3	(5)
Accumulated Translation Adjustment [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other Comprehensive Income (Loss), Tax		(32)	22	(35)
Accumulated Defined Benefit Plans Adjustment [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other Comprehensive Income (Loss), Tax		$ (2)	$ 2	$ (7)

[1] Includes cash flow hedges of $(495), $(218) and $(205) as of December 31, 2024, 2023 and 2022, respectively. See Note 12 for additional information on cash flow hedges.