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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 | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2025 | Sep. 30, 2024 | Sep. 30, 2025 | Sep. 30, 2024 | Dec. 31, 2024
Changes in the allowance for losses on Mortgage and other loans receivable |  |  |  |  |
Allowance, beginning of year |  |  | $ 37,800 |  |
Allowance, end of period | $ 37,740 |  | 37,740 |  |
Commercial mortgage loans |  |  |  |  |
Changes in the allowance for losses on Mortgage and other loans receivable |  |  |  |  |
Allowance, beginning of year | 106 | $ 162 | 163 | $ 138 |
Loans charged off | (8) | 0 | (60) | 0 |
Net charge-offs | (8) | 0 | (60) | 0 |
Addition to (release of) allowance for loan losses | 6 | 3 | 1 | 27 |
Allowance, end of period | 104 | 165 | 104 | 165 |
Off-balance-sheet commitments | 0 | 5 | 0 | 5 | $ 8
Total | 2,869 |  | 2,869 |  | 3,305
Other Loans |  |  |  |  |
Changes in the allowance for losses on Mortgage and other loans receivable |  |  |  |  |
Allowance, beginning of year | 0 | 1 | 1 | 2 |
Loans charged off | 0 | 0 | 0 | 0 |
Net charge-offs | 0 | 0 | 0 | 0 |
Addition to (release of) allowance for loan losses | 0 | 1 | (1) | 0 |
Allowance, end of period | 0 | 2 | 0 | 2 |
Excluding AIGFP Operating |  |  |  |  |
Changes in the allowance for losses on Mortgage and other loans receivable |  |  |  |  |
Allowance, beginning of year | 106 | 163 | 164 | 140 |
Loans charged off | (8) | 0 | (60) | 0 |
Net charge-offs | (8) | 0 | (60) | 0 |
Addition to (release of) allowance for loan losses | 6 | 4 | 0 | 27 |
Allowance, end of period | 104 | 167 | 104 | 167 |
Total | 3,418 |  | 3,418 |  | 4,032
AIG Financial Products |  |  |  |  |
Changes in the allowance for losses on Mortgage and other loans receivable |  |  |  |  |
Allowance, beginning of year |  |  | 37,600 |  |
Allowance, end of period | 37,600 | 37,600 | 37,600 | 37,600 |
Total | $ 37,600 | $ 37,600 | $ 37,600 | $ 37,600 | $ 37,600

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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 -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479344/326-20-45-1 + Details
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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 -Name Accounting Standards Codification -Section 50 -Paragraph 13 -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-13 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-6 + Details
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- Definition 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 -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 13 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-13 + Details
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- Definition Amortized cost excluding accrued interest, before allowance for credit loss, of financing receivable. Excludes net investment in lease. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479344/326-20-45-1 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 3B -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-3B Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 5 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-5 + Details
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- Definition Amount, excluding accrued interest, of credit loss expense (reversal of expense) on financing receivable. Excludes net investment in lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 13 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-13 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 220 -SubTopic 40 -Name Accounting Standards Codification -Section 50 -Paragraph 22 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147476148/220-40-50-22 + Details
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- Definition 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. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 45 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479344/326-20-45-2 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 460 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482454/460-10-45-1 + Details
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