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v3.25.1

Investments - Schedule of Investment in CMLs by Loan to Value and Debt Service Coverage Ratios (Details) - Commercial Mortgage - USD ($) $ in Millions | Mar. 31, 2025 | Dec. 31, 2024
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Schedule of Investments [Line Items] |  |
Loans | $ 2,805 | $ 2,722
% of Total | 100.00% | 100.00%
Credit Quality Indicator Current Year [Abstract] |  |
Year one | $ 99 | $ 273
Year two | 283 | 227
Year three | 228 | 290
Year four | 290 | 1,253
Year five | 1,253 | 469
Prior | 652 | 210
Total | 2,805 | 2,722
Credit Quality Indicator Prior Year [Abstract] |  |
Year one | 99 | 273
Year two | 283 | 227
Year three | 228 | 290
Year four | 290 | 1,253
Year five | 1,253 | 469
Prior | 652 | 210
Total | 2,805 | 2,722
Fair Value |  |
Schedule of Investments [Line Items] |  |
Loans | $ 2,534 | $ 2,404
% of Total | 100.00% | 100.00%
Credit Quality Indicator Current Year [Abstract] |  |
Total | $ 2,534 | $ 2,404
Credit Quality Indicator Prior Year [Abstract] |  |
Total | 2,534 | 2,404
Less than 50.00% |  |
Schedule of Investments [Line Items] |  |
Loans | $ 477 | $ 524
% of Total | 17.00% | 19.00%
Credit Quality Indicator Current Year [Abstract] |  |
Year one | $ 24 | $ 66
Year two | 73 | 99
Year three | 100 | 19
Year four | 19 | 74
Year five | 74 | 189
Prior | 187 | 77
Total | 477 | 524
Credit Quality Indicator Prior Year [Abstract] |  |
Year one | 24 | 66
Year two | 73 | 99
Year three | 100 | 19
Year four | 19 | 74
Year five | 74 | 189
Prior | 187 | 77
Total | 477 | 524
Less than 50.00% | Fair Value |  |
Schedule of Investments [Line Items] |  |
Loans | $ 467 | $ 501
% of Total | 18.00% | 21.00%
Credit Quality Indicator Current Year [Abstract] |  |
Total | $ 467 | $ 501
Credit Quality Indicator Prior Year [Abstract] |  |
Total | 467 | 501
50.00% to 59.99% |  |
Schedule of Investments [Line Items] |  |
Loans | $ 1,006 | $ 927
% of Total | 36.00% | 34.00%
Credit Quality Indicator Current Year [Abstract] |  |
Year one | $ 0 | $ 112
Year two | 115 | 53
Year three | 53 | 149
Year four | 149 | 321
Year five | 346 | 159
Prior | 343 | 133
Total | 1,006 | 927
Credit Quality Indicator Prior Year [Abstract] |  |
Year one | 0 | 112
Year two | 115 | 53
Year three | 53 | 149
Year four | 149 | 321
Year five | 346 | 159
Prior | 343 | 133
Total | 1,006 | 927
50.00% to 59.99% | Fair Value |  |
Schedule of Investments [Line Items] |  |
Loans | $ 909 | $ 826
% of Total | 36.00% | 34.00%
Credit Quality Indicator Current Year [Abstract] |  |
Total | $ 909 | $ 826
Credit Quality Indicator Prior Year [Abstract] |  |
Total | 909 | 826
60.00% to 74.99% |  |
Schedule of Investments [Line Items] |  |
Loans | $ 1,305 | $ 1,254
% of Total | 46.00% | 46.00%
Credit Quality Indicator Current Year [Abstract] |  |
Year one | $ 75 | $ 91
Year two | 91 | 71
Year three | 71 | 113
Year four | 113 | 858
Year five | 833 | 121
Prior | 122 | 0
Total | 1,305 | 1,254
Credit Quality Indicator Prior Year [Abstract] |  |
Year one | 75 | 91
Year two | 91 | 71
Year three | 71 | 113
Year four | 113 | 858
Year five | 833 | 121
Prior | 122 | 0
Total | 1,305 | 1,254
60.00% to 74.99% | Fair Value |  |
Schedule of Investments [Line Items] |  |
Loans | $ 1,141 | $ 1,060
% of Total | 45.00% | 44.00%
Credit Quality Indicator Current Year [Abstract] |  |
Total | $ 1,141 | $ 1,060
Credit Quality Indicator Prior Year [Abstract] |  |
Total | 1,141 | 1,060
75.00% to 84.99% |  |
Schedule of Investments [Line Items] |  |
Loans | $ 17 | $ 17
% of Total | 1.00% | 1.00%
Credit Quality Indicator Current Year [Abstract] |  |
Year one | $ 0 | $ 4
Year two | 4 | 4
Year three | 4 | 9
Year four | 9 | 0
Year five | 0 | 0
Prior | 0 | 0
Total | 17 | 17
Credit Quality Indicator Prior Year [Abstract] |  |
Year one | 0 | 4
Year two | 4 | 4
Year three | 4 | 9
Year four | 9 | 0
Year five | 0 | 0
Prior | 0 | 0
Total | 17 | 17
75.00% to 84.99% | Fair Value |  |
Schedule of Investments [Line Items] |  |
Loans | $ 17 | $ 17
% of Total | 1.00% | 1.00%
Credit Quality Indicator Current Year [Abstract] |  |
Total | $ 17 | $ 17
Credit Quality Indicator Prior Year [Abstract] |  |
Total | 17 | 17
Greater than 1.25 |  |
Schedule of Investments [Line Items] |  |
Loans | 2,545 | 2,535
Credit Quality Indicator Current Year [Abstract] |  |
Year one | 89 | 140
Year two | 112 | 215
Year three | 190 | 278
Year four | 278 | 1,241
Year five | 1,241 | 469
Prior | 635 | 192
Total | 2,545 | 2,535
Credit Quality Indicator Prior Year [Abstract] |  |
Year one | 89 | 140
Year two | 112 | 215
Year three | 190 | 278
Year four | 278 | 1,241
Year five | 1,241 | 469
Prior | 635 | 192
Total | 2,545 | 2,535
Greater than 1.25 | Less than 50.00% |  |
Schedule of Investments [Line Items] |  |
Loans | 437 | 490
Credit Quality Indicator Current Year [Abstract] |  |
Total | 437 | 490
Credit Quality Indicator Prior Year [Abstract] |  |
Total | 437 | 490
Greater than 1.25 | 50.00% to 59.99% |  |
Schedule of Investments [Line Items] |  |
Loans | 853 | 803
Credit Quality Indicator Current Year [Abstract] |  |
Total | 853 | 803
Credit Quality Indicator Prior Year [Abstract] |  |
Total | 853 | 803
Greater than 1.25 | 60.00% to 74.99% |  |
Schedule of Investments [Line Items] |  |
Loans | 1,251 | 1,238
Credit Quality Indicator Current Year [Abstract] |  |
Total | 1,251 | 1,238
Credit Quality Indicator Prior Year [Abstract] |  |
Total | 1,251 | 1,238
Greater than 1.25 | 75.00% to 84.99% |  |
Schedule of Investments [Line Items] |  |
Loans | 4 | 4
Credit Quality Indicator Current Year [Abstract] |  |
Total | 4 | 4
Credit Quality Indicator Prior Year [Abstract] |  |
Total | 4 | 4
Greater than 1.00 but less than 1.25 |  |
Schedule of Investments [Line Items] |  |
Loans | 239 | 166
Credit Quality Indicator Current Year [Abstract] |  |
Year one | 10 | 133
Year two | 171 | 12
Year three | 38 | 3
Year four | 3 | 0
Year five | 0 | 0
Prior | 17 | 18
Total | 239 | 166
Credit Quality Indicator Prior Year [Abstract] |  |
Year one | 10 | 133
Year two | 171 | 12
Year three | 38 | 3
Year four | 3 | 0
Year five | 0 | 0
Prior | 17 | 18
Total | 239 | 166
Greater than 1.00 but less than 1.25 | Less than 50.00% |  |
Schedule of Investments [Line Items] |  |
Loans | 40 | 34
Credit Quality Indicator Current Year [Abstract] |  |
Total | 40 | 34
Credit Quality Indicator Prior Year [Abstract] |  |
Total | 40 | 34
Greater than 1.00 but less than 1.25 | 50.00% to 59.99% |  |
Schedule of Investments [Line Items] |  |
Loans | 141 | 112
Credit Quality Indicator Current Year [Abstract] |  |
Total | 141 | 112
Credit Quality Indicator Prior Year [Abstract] |  |
Total | 141 | 112
Greater than 1.00 but less than 1.25 | 60.00% to 74.99% |  |
Schedule of Investments [Line Items] |  |
Loans | 54 | 16
Credit Quality Indicator Current Year [Abstract] |  |
Total | 54 | 16
Credit Quality Indicator Prior Year [Abstract] |  |
Total | 54 | 16
Greater than 1.00 but less than 1.25 | 75.00% to 84.99% |  |
Schedule of Investments [Line Items] |  |
Loans | 4 | 4
Credit Quality Indicator Current Year [Abstract] |  |
Total | 4 | 4
Credit Quality Indicator Prior Year [Abstract] |  |
Total | 4 | 4
Less than 1.00 |  |
Schedule of Investments [Line Items] |  |
Loans | 21 | 21
Credit Quality Indicator Current Year [Abstract] |  |
Year one | 0 | 0
Year two | 0 | 0
Year three | 0 | 9
Year four | 9 | 12
Year five | 12 | 0
Prior | 0 | 0
Total | 21 | 21
Credit Quality Indicator Prior Year [Abstract] |  |
Year one | 0 | 0
Year two | 0 | 0
Year three | 0 | 9
Year four | 9 | 12
Year five | 12 | 0
Prior | 0 | 0
Total | 21 | 21
Less than 1.00 | Less than 50.00% |  |
Schedule of Investments [Line Items] |  |
Loans | 0 | 0
Credit Quality Indicator Current Year [Abstract] |  |
Total | 0 | 0
Credit Quality Indicator Prior Year [Abstract] |  |
Total | 0 | 0
Less than 1.00 | 50.00% to 59.99% |  |
Schedule of Investments [Line Items] |  |
Loans | 12 | 12
Credit Quality Indicator Current Year [Abstract] |  |
Total | 12 | 12
Credit Quality Indicator Prior Year [Abstract] |  |
Total | 12 | 12
Less than 1.00 | 60.00% to 74.99% |  |
Schedule of Investments [Line Items] |  |
Loans | 0 | 0
Credit Quality Indicator Current Year [Abstract] |  |
Total | 0 | 0
Credit Quality Indicator Prior Year [Abstract] |  |
Total | 0 | 0
Less than 1.00 | 75.00% to 84.99% |  |
Schedule of Investments [Line Items] |  |
Loans | 9 | 9
Credit Quality Indicator Current Year [Abstract] |  |
Total | 9 | 9
Credit Quality Indicator Prior Year [Abstract] |  |
Total | $ 9 | $ 9

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