Equity - Schedule of Other Comprehensive Income (Loss) Reclassification Adjustments (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Other Comprehensive Income (Loss) Reclassification Adjustments
Other comprehensive income (loss)	$ 6,105	$ 5,940	$ (32,303)
Total
Other Comprehensive Income (Loss) Reclassification Adjustments
Unrealized change arising during year	(1,413)	5,681	(39,179)
Less: Reclassification adjustments included in net income	(7,864)	(1,091)	(1,212)
Total other comprehensive income (loss), before of income tax expense (benefit)	6,451	6,772	(37,967)
Less: Income tax expense (benefit)	346	832	(5,664)
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 year	95	(6)	(112)
Less: Reclassification adjustments included in net income	(42)	(26)	7
Total other comprehensive income (loss), before of income tax expense (benefit)	137	20	(119)
Less: Income tax expense (benefit)	20	6	(25)
Other comprehensive income (loss)	117	14	(94)
Unrealized Appreciation (Depreciation) of All Other Investments
Other Comprehensive Income (Loss) Reclassification Adjustments
Unrealized change arising during year	(2,211)	7,172	(47,043)
Less: Reclassification adjustments included in net income	(9,132)	(1,036)	(1,189)
Total other comprehensive income (loss), before of income tax expense (benefit)	6,921	8,208	(45,854)
Less: Income tax expense (benefit)	70	1,074	(7,446)
Other comprehensive income (loss)	6,851	7,134	(38,408)
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 year	130	(695)	1,635
Less: Reclassification adjustments included in net income	(330)	0
Total other comprehensive income (loss), before of income tax expense (benefit)	460	(695)	1,635
Less: Income tax expense (benefit)	28	(151)	341
Other comprehensive income (loss)	432	(544)	1,294
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 year	946	(1,045)	6,993
Less: Reclassification adjustments included in net income	1,583	0
Total other comprehensive income (loss), before of income tax expense (benefit)	(637)	(1,045)	6,993
Less: Income tax expense (benefit)	165	(174)	1,449
Other comprehensive income (loss)	(802)	(871)	5,544
Foreign Currency Translation Adjustments
Other Comprehensive Income (Loss) Reclassification Adjustments
Unrealized change arising during year	(407)	137	(593)
Less: Reclassification adjustments included in net income	88	0
Total other comprehensive income (loss), before of income tax expense (benefit)	(495)	137	(593)
Less: Income tax expense (benefit)	45	35	20
Other comprehensive income (loss)	(540)	102	(613)
Retirement Plan Liabilities Adjustment
Other Comprehensive Income (Loss) Reclassification Adjustments
Unrealized change arising during year	34	118	(53)
Less: Reclassification adjustments included in net income	(31)	(29)	(30)
Total other comprehensive income (loss), before of income tax expense (benefit)	65	147	(23)
Less: Income tax expense (benefit)	18	42	(3)
Other comprehensive income (loss)	$ 47	105	(20)
Fair Value of Liabilities Under Fair Value Option Attributable to Changes in Our Own Credit Risk
Other Comprehensive Income (Loss) Reclassification Adjustments
Unrealized change arising during year			(6)
Total other comprehensive income (loss), before of income tax expense (benefit)			(6)
Other comprehensive income (loss)		$ 0	$ (6)