Lending Activities - Rollforward of the changes in the allowance for credit losses on Mortgage and other loans receivable (Details) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022	Dec. 31, 2022
Changes in the allowance for losses on Mortgage and other loans receivable
Allowance, beginning of period			$ 38,351
Reclassified to held for sale			0	$ 0
Allowance, end of period	$ 38,441		38,441
Loans modified in a troubled debt restructuring		$ 115		115
Commercial mortgage loans
Changes in the allowance for losses on Mortgage and other loans receivable
Allowance, beginning of period	706	533	640	545
Loans charged off	(6)	0	(6)	(4)
Net charge-offs	(6)	0	(6)	(4)
Addition to (release of) allowance for loan losses	37	(8)	103	(16)
Reclassified to held for sale	0	0	0	0
Allowance, end of period	737	525	737	525
Off-balance-sheet commitments	87	89	87	89	$ 69
Other loans
Changes in the allowance for losses on Mortgage and other loans receivable
Allowance, beginning of period	80	84	76	84
Loans charged off	0	0	0	0
Net charge-offs	0	0	0	0
Addition to (release of) allowance for loan losses	(11)	(6)	(7)	(6)
Reclassified to held for sale	0	0	0	0
Allowance, end of period	69	78	69	78
Excluding AIGFP Operating
Changes in the allowance for losses on Mortgage and other loans receivable
Allowance, beginning of period	786	617	716	629
Loans charged off	(6)	0	(6)	(4)
Net charge-offs	(6)	0	(6)	(4)
Addition to (release of) allowance for loan losses	26	(14)	96	(22)
Reclassified to held for sale	0	0
Allowance, end of period	$ 806	$ 603	$ 806	$ 603

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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- Definition

Amount excluding accrued interest, of allowance for credit loss on financing receivable. Excludes net investment in lease.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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-Section 45
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- Definition

Amount, excluding accrued interest, of decrease in allowance for credit loss on financing receivable from writeoff. Excludes net investment in lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
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Amount, excluding accrued interest, of decrease (increase) in allowance for credit loss on financing receivable from writeoff (recovery). Excludes net investment in lease.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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Amount, excluding accrued interest, of credit loss expense (reversal of expense) on financing receivable. Excludes net investment in lease.

+ References

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- Definition

Amount, excluding accrued interest, of reversal of credit loss expense on financing receivable transferred out of held-for-investment into held-for-sale classification. Excludes net investment in lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 310
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- Definition

Accumulated amortized cost of financing receivable modified for debtor experiencing financial difficulty.

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Amount of expected credit loss for credit exposure on off-balance-sheet commitment, including but not limited to, loan commitment, standby letter of credit, financial guarantee not accounted for as insurance. Excludes off-balance sheet credit exposure accounted for as insurance and instrument accounted for under derivatives and hedging.

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