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Financing Receivables - General Credit Quality Information - Commercial Mortgage Loans (Details) - USD ($) $ in Millions | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2023 | Dec. 31, 2022
Commercial Loans | Commercial mortgage loans |  |
Financing Receivables |  |
Loans | $ 1,861 | $ 1,882
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 | 100.00% | 100.00%
Total commercial mortgage loans | Credit concentration risk | Highest credit risk rating | Maximum |  |
Financing Receivables |  |
Percentage of total | 1.00% | 1.00%

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