Equity - Schedule of Other Comprehensive Income (Loss) Reclassification Adjustments (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Other Comprehensive Income (Loss) Reclassification Adjustments
Other comprehensive income (loss)	$ (1,057)	$ 3,913
Noncontrolling interests
Other Comprehensive Income (Loss) Reclassification Adjustments
Unrealized change arising during period	(1,435)	4,126
Less: Reclassification adjustments included in net income	(450)	(461)
Total other comprehensive income (loss), before of income tax expense (benefit)	(985)	4,587
Less: Income tax expense (benefit)	72	674
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	66	(7)
Less: Reclassification adjustments included in net income	(6)	(16)
Total other comprehensive income (loss), before of income tax expense (benefit)	72	9
Less: Income tax expense (benefit)	15	3
Other comprehensive income (loss)	57	6
Unrealized Appreciation (Depreciation) of All Other Investments
Other Comprehensive Income (Loss) Reclassification Adjustments
Unrealized change arising during period	(1,832)	4,566
Less: Reclassification adjustments included in net income	(437)	(436)
Total other comprehensive income (loss), before of income tax expense (benefit)	(1,395)	5,002
Less: Income tax expense (benefit)	(105)	750
Other comprehensive income (loss)	(1,290)	4,252
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	(29)	95
Less: Reclassification adjustments included in net income	0	0
Total other comprehensive income (loss), before of income tax expense (benefit)	(29)	95
Less: Income tax expense (benefit)	(6)	20
Other comprehensive income (loss)	(23)	75
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	697	(527)
Less: Reclassification adjustments included in net income	0	0
Total other comprehensive income (loss), before of income tax expense (benefit)	697	(527)
Less: Income tax expense (benefit)	152	(107)
Other comprehensive income (loss)	545	(420)
Foreign Currency Translation Adjustments
Other Comprehensive Income (Loss) Reclassification Adjustments
Unrealized change arising during period	(339)	(19)
Less: Reclassification adjustments included in net income	0	0
Total other comprehensive income (loss), before of income tax expense (benefit)	(339)	(19)
Less: Income tax expense (benefit)	14	9
Other comprehensive income (loss)	(353)	(28)
Retirement Plan Liabilities Adjustment
Other Comprehensive Income (Loss) Reclassification Adjustments
Unrealized change arising during period	2	18
Less: Reclassification adjustments included in net income	(7)	(9)
Total other comprehensive income (loss), before of income tax expense (benefit)	9	27
Less: Income tax expense (benefit)	2	(1)
Other comprehensive income (loss)	$ 7	$ 28