Equity - Schedule of Other Comprehensive Income (Loss) Reclassification Adjustments (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Other Comprehensive Income (Loss) Reclassification Adjustments
Other comprehensive income (loss)	$ 636	$ (1,057)
Total
Other Comprehensive Income (Loss) Reclassification Adjustments
Unrealized change arising during period	250	(1,435)
Less: Reclassification adjustments included in net income	(270)	(450)
Total other comprehensive income (loss), before of income tax expense (benefit)	520	(985)
Less: Income tax expense (benefit)	(116)	72
Unrealized Appreciation (Depreciation) of Fixed Maturity Securities on Which Allowance for Credit Losses Was Taken
Other Comprehensive Income (Loss) Reclassification Adjustments
Unrealized change arising during period	4	66
Less: Reclassification adjustments included in net income	0	(6)
Total other comprehensive income (loss), before of income tax expense (benefit)	4	72
Less: Income tax expense (benefit)	0	15
Other comprehensive income (loss)	4	57
Unrealized Appreciation (Depreciation) of All Other Investments
Other Comprehensive Income (Loss) Reclassification Adjustments
Unrealized change arising during period	62	(1,832)
Less: Reclassification adjustments included in net income	(262)	(437)
Total other comprehensive income (loss), before of income tax expense (benefit)	324	(1,395)
Less: Income tax expense (benefit)	(101)	(105)
Other comprehensive income (loss)	425	(1,290)
Change in Fair Value of Market Risk Benefits Attributable to Changes in Our Own Credit Risk
Other Comprehensive Income (Loss) Reclassification Adjustments
Unrealized change arising during period	0	(29)
Less: Reclassification adjustments included in net income	0	0
Total other comprehensive income (loss), before of income tax expense (benefit)	0	(29)
Less: Income tax expense (benefit)	0	(6)
Other comprehensive income (loss)	0	(23)
Change in the discount rates used to measure traditional and limited payment long-duration insurance contracts
Other Comprehensive Income (Loss) Reclassification Adjustments
Unrealized change arising during period	9	697
Less: Reclassification adjustments included in net income	0	0
Total other comprehensive income (loss), before of income tax expense (benefit)	9	697
Less: Income tax expense (benefit)	3	152
Other comprehensive income (loss)	6	545
Foreign Currency Translation Adjustments
Other Comprehensive Income (Loss) Reclassification Adjustments
Unrealized change arising during period	175	(339)
Less: Reclassification adjustments included in net income	0	0
Total other comprehensive income (loss), before of income tax expense (benefit)	175	(339)
Less: Income tax expense (benefit)	(19)	14
Other comprehensive income (loss)	194	(353)
Retirement Plan Liabilities Adjustment
Other Comprehensive Income (Loss) Reclassification Adjustments
Unrealized change arising during period	0	2
Less: Reclassification adjustments included in net income	(8)	(7)
Total other comprehensive income (loss), before of income tax expense (benefit)	8	9
Less: Income tax expense (benefit)	1	2
Other comprehensive income (loss)	$ 7	$ 7