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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 | Jun. 30, 2025 | Dec. 31, 2024
--- | --- | ---
Amortized Cost of Non-Accrual Loans [Abstract] |  |
Amortized cost of loans on non-accrual | $ 76 | $ 94
Residential Mortgage |  |
Credit Quality Indicator Current Year [Abstract] |  |
Year one | 620 | 614
Year two | 773 | 376
Year three | 374 | 928
Year four | 884 | 840
Year five | 798 | 176
Prior | 481 | 340
Total | 3,930 | 3,274
Credit Quality Indicator Prior Year [Abstract] |  |
Year one | 620 | 614
Year two | 773 | 376
Year three | 374 | 928
Year four | 884 | 840
Year five | 798 | 176
Prior | 481 | 340
Total | 3,930 | 3,274
Amortized Cost of Non-Accrual Loans [Abstract] |  |
Amortized cost of loans on non-accrual | 67 | 85
Commercial Mortgage |  |
Credit Quality Indicator Current Year [Abstract] |  |
Total | 3,085 | 2,722
Credit Quality Indicator Prior Year [Abstract] |  |
Total | 3,085 | 2,722
Amortized Cost of Non-Accrual Loans [Abstract] |  |
Amortized cost of loans on non-accrual | 9 | 9
Current (less than 30 days past due) | Residential Mortgage |  |
Credit Quality Indicator Current Year [Abstract] |  |
Year one | 619 | 610
Year two | 765 | 368
Year three | 370 | 911
Year four | 866 | 805
Year five | 773 | 162
Prior | 437 | 312
Total | 3,830 | 3,168
Credit Quality Indicator Prior Year [Abstract] |  |
Year one | 619 | 610
Year two | 765 | 368
Year three | 370 | 911
Year four | 866 | 805
Year five | 773 | 162
Prior | 437 | 312
Total | 3,830 | 3,168
30-89 days past due | Residential Mortgage |  |
Credit Quality Indicator Current Year [Abstract] |  |
Year one | 1 | 1
Year two | 5 | 6
Year three | 2 | 4
Year four | 6 | 6
Year five | 5 | 1
Prior | 14 | 3
Total | 33 | 21
Credit Quality Indicator Prior Year [Abstract] |  |
Year one | 1 | 1
Year two | 5 | 6
Year three | 2 | 4
Year four | 6 | 6
Year five | 5 | 1
Prior | 14 | 3
Total | 33 | 21
90 days or more past due | Residential Mortgage |  |
Credit Quality Indicator Current Year [Abstract] |  |
Year one | 0 | 3
Year two | 3 | 2
Year three | 2 | 13
Year four | 12 | 29
Year five | 20 | 13
Prior | 30 | 25
Total | 67 | 85
Credit Quality Indicator Prior Year [Abstract] |  |
Year one | 0 | 3
Year two | 3 | 2
Year three | 2 | 13
Year four | 12 | 29
Year five | 20 | 13
Prior | 30 | 25
Total | $ 67 | $ 85

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