Long-duration Contracts - Balances of and Changes in Liability for Future Policy Benefits (Details) - Payout annuities with life contingencies - USD ($) $ in Millions	6 Months Ended
Jun. 30, 2023	Jun. 30, 2022	Dec. 31, 2022	Jan. 01, 2022
Present value of expected future policy benefits
Beginning balance	$ 36,422	$ 35,278
Effect of changes in discount rate assumptions	8,436	6,459	$ 8,425	$ 0
Beginning balance at original discount rate	52,905	41,756	44,847	35,278
Effect of actual experience compared to expected experience			(60)	(91)
Adjusted beginning balance			$ 44,787	$ 35,187
Issuances	9,097	7,624
Interest accrual	751	483
Benefit payments	(1,748)	(1,480)
Foreign exchange	18	(58)
Ending balance at original discount rate	52,905	41,756
Ending balance	$ 44,469	$ 35,297

Liability For Future Policy Benefit, Expected Future Policy Benefit, Foreign exchange

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Amount, before tax, of accumulated other comprehensive income (loss) (AOCI) from (increase) decrease in expected future policy benefit component of liability for future policy benefit from change in discount rate.

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- Definition

Amount, before effect of reinsurance and after current period update of cash flow assumption, of expected future benefit and expense component for liability for future policy benefit, discounted at original rate.

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Amount, before effect of reinsurance and after current period update of cash flow assumption and discount rate change, of expected future policy benefit and expense component of liability for future policy benefit.

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Amount of cumulative increase (decrease) in expected future policy benefit and expense component for liability of future policy benefit from effect of variance from cash flow assumption change for actual experience.

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Amount of interest expense for expected future policy benefit and expense component of liability for future policy benefit.

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Amount of increase in expected future policy benefit and expense component of liability for future policy benefit from contract issuance.

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Amount, before effect of reinsurance and current period update of cash flow assumption, of expected future policy benefit and expense component of liability for future policy benefit, discounted at original rate.

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- Definition

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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No definition available.

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- Definition

Amount of cash outflow to policyholder from benefit payment for expected future policy benefit and expense component of liability for future policy benefit.

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