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Investments - Residential Mortgage Loans by Year of Origination (Details) - Residential - USD ($) $ in Millions | Mar. 31, 2024 | Dec. 31, 2023
--- | --- | ---
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Year one | $ 54 | $ 517
Year two | 670 | 555
Year three | 548 | 483
Year four | 475 | 81
Year five | 78 | 112
Year six and prior | 162 | 57
Total | 1,987 | 1,805
Performing |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Year one | 54 | 515
Year two | 665 | 533
Year three | 525 | 465
Year four | 459 | 78
Year five | 76 | 99
Year six and prior | 147 | 53
Total | 1,926 | 1,743
Nonperforming |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Year one | 0 | 2
Year two | 5 | 22
Year three | 23 | 18
Year four | 16 | 3
Year five | 2 | 13
Year six and prior | 15 | 4
Total | $ 61 | $ 62

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