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Investments - Residential Mortgage Loans by Year of Origination (Details) - Residential - USD ($) $ in Millions | Dec. 31, 2024 | Dec. 31, 2023
--- | --- | ---
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Year one | $ 1,909 | $ 517
Year two | 573 | 555
Year three | 525 | 483
Year four | 438 | 81
Year five | 69 | 112
Year six and prior | 150 | 57
Total | 3,664 | 1,805
Performing |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Year one | 1,895 | 515
Year two | 557 | 533
Year three | 492 | 465
Year four | 427 | 78
Year five | 65 | 99
Year six and prior | 136 | 53
Total | 3,572 | 1,743
Nonperforming |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Year one | 14 | 2
Year two | 16 | 22
Year three | 33 | 18
Year four | 11 | 3
Year five | 4 | 13
Year six and prior | 14 | 4
Total | $ 92 | $ 62

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