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Investments - Schedule of Residential Loans Segregated by Aging of Loans (By Year of Origination) and Non-accrual Loans by Amortized Cost (Details) - USD ($) $ in Millions | Mar. 31, 2025 | Dec. 31, 2024
--- | --- | ---
Amortized Cost of Non-Accrual Loans [Abstract] |  |
Amortized cost of loans on non-accrual | $ 82 | $ 94
Residential Mortgage |  |
Credit Quality Indicator Current Year [Abstract] |  |
Year one | 311 | 614
Year two | 724 | 376
Year three | 376 | 928
Year four | 903 | 840
Year five | 821 | 176
Prior | 499 | 340
Credit Quality Indicator Prior Year [Abstract] |  |
Year one | 311 | 614
Year two | 724 | 376
Year three | 376 | 928
Year four | 903 | 840
Year five | 821 | 176
Prior | 499 | 340
Total | 3,634 | 3,274
Amortized Cost of Non-Accrual Loans [Abstract] |  |
Amortized cost of loans on non-accrual | 72 | 85
Commercial Mortgage |  |
Credit Quality Indicator Current Year [Abstract] |  |
Total | 2,805 | 2,722
Credit Quality Indicator Prior Year [Abstract] |  |
Total | 2,805 | 2,722
Amortized Cost of Non-Accrual Loans [Abstract] |  |
Amortized cost of loans on non-accrual | 10 | 9
Current (less than 30 days past due) | Residential Mortgage |  |
Credit Quality Indicator Current Year [Abstract] |  |
Year one | 311 | 610
Year two | 719 | 368
Year three | 372 | 911
Year four | 886 | 805
Year five | 793 | 162
Prior | 460 | 312
Credit Quality Indicator Prior Year [Abstract] |  |
Year one | 311 | 610
Year two | 719 | 368
Year three | 372 | 911
Year four | 886 | 805
Year five | 793 | 162
Prior | 460 | 312
Total | 3,541 | 3,168
Current (less than 30 days past due) | Commercial Mortgage |  |
Credit Quality Indicator Current Year [Abstract] |  |
Total | 2,795 | 2,713
30-89 days past due | Residential Mortgage |  |
Credit Quality Indicator Current Year [Abstract] |  |
Year one | 0 | 1
Year two | 4 | 6
Year three | 2 | 4
Year four | 6 | 6
Year five | 2 | 1
Prior | 7 | 3
Credit Quality Indicator Prior Year [Abstract] |  |
Year one | 0 | 1
Year two | 4 | 6
Year three | 2 | 4
Year four | 6 | 6
Year five | 2 | 1
Prior | 7 | 3
Total | 21 | 21
30-89 days past due | Commercial Mortgage |  |
Credit Quality Indicator Current Year [Abstract] |  |
Total | 0 | 0
90 days or more past due | Residential Mortgage |  |
Credit Quality Indicator Current Year [Abstract] |  |
Year one | 0 | 3
Year two | 1 | 2
Year three | 2 | 13
Year four | 11 | 29
Year five | 26 | 13
Prior | 32 | 25
Credit Quality Indicator Prior Year [Abstract] |  |
Year one | 0 | 3
Year two | 1 | 2
Year three | 2 | 13
Year four | 11 | 29
Year five | 26 | 13
Prior | 32 | 25
Total | 72 | 85
90 days or more past due | Commercial Mortgage |  |
Credit Quality Indicator Current Year [Abstract] |  |
Total | $ 10 | $ 9

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