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Financing Receivables - General Credit Quality Information - Commercial Mortgage Loans Narrative (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021
Commercial Loans | Commercial mortgage loans |  |
Financing Receivables |  |
Loans | $ 1,882 | $ 1,916
Commercial Loans | Commercial mortgage loans | Past due |  |
Financing Receivables |  |
Loans | $ 0 | $ 0
Total commercial mortgage loans | Credit concentration risk | Commercial Loans | Commercial mortgage loans |  |
Financing Receivables |  |
Percentage of total, less than | 100.00% | 100.00%
Total commercial mortgage loans | Credit concentration risk | Highest credit risk rating |  |
Financing Receivables |  |
Percentage of total, less than | 1.00% | 1.00%

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