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Investments - Residential Mortgage Loans by Year of Origination (Details) - Residential - USD ($) $ in Millions | Sep. 30, 2024 | Dec. 31, 2023
--- | --- | ---
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Year one | $ 1,260 | $ 517
Year two | 797 | 555
Year three | 524 | 483
Year four | 448 | 81
Year five | 72 | 112
Year six and prior | 150 | 57
Total | 3,251 | 1,805
Performing |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Year one | 1,260 | 515
Year two | 790 | 533
Year three | 498 | 465
Year four | 435 | 78
Year five | 70 | 99
Year six and prior | 136 | 53
Total | 3,189 | 1,743
Nonperforming |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Year one | 0 | 2
Year two | 7 | 22
Year three | 26 | 18
Year four | 13 | 3
Year five | 2 | 13
Year six and prior | 14 | 4
Total | $ 62 | $ 62

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