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Lending Activities - Credit Quality of Commercial Mortgages (Details) - Commercial mortgages $ in Millions | Dec. 31, 2024 USD ($) | Dec. 31, 2023 USD ($)
--- | --- | ---
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Current year | $ 146 | $ 403
Prior year | 494 | 249
Two years prior | 200 | 648
Three years prior | 612 | 191
Four years prior | 79 | 177
Five years & beyond prior | 1,774 | 2,168
Total | $ 3,305 | $ 3,836
Weighted average debt service coverage ratio | 1.8 | 1.8
Weighted average loan-to-value ratio (as a percent) | 65.00% | 62.00%
Less than 65% |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Current year | $ 107 | $ 359
Prior year | 433 | 159
Two years prior | 177 | 492
Three years prior | 485 | 177
Four years prior | 71 | 156
Five years & beyond prior | 1,012 | 1,385
Total | 2,285 | 2,728
65% to 75% |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Current year | 0 | 10
Prior year | 40 | 15
Two years prior | 0 | 137
Three years prior | 54 | 0
Four years prior | 0 | 21
Five years & beyond prior | 317 | 367
Total | 411 | 550
76% to 80% |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Current year | 0 | 0
Prior year | 0 | 32
Two years prior | 0 | 10
Three years prior | 31 | 0
Four years prior | 0 | 0
Five years & beyond prior | 51 | 0
Total | 82 | 42
Greater than 80% |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Current year | 39 | 34
Prior year | 21 | 43
Two years prior | 23 | 9
Three years prior | 42 | 14
Four years prior | 8 | 0
Five years & beyond prior | 394 | 416
Total | 527 | 516
Greater than 1.2X |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Current year | 120 | 398
Prior year | 484 | 167
Two years prior | 185 | 394
Three years prior | 563 | 135
Four years prior | 79 | 156
Five years & beyond prior | 1,482 | 1,784
Total | 2,913 | 3,034
1.00 - 1.20X |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Current year | 26 | 5
Prior year | 10 | 71
Two years prior | 15 | 254
Three years prior | 17 | 56
Four years prior | 0 | 21
Five years & beyond prior | 49 | 298
Total | 117 | 705
Less than 1.00X |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Current year | 0 | 0
Prior year | 0 | 11
Two years prior | 0 | 0
Three years prior | 32 | 0
Four years prior | 0 | 0
Five years & beyond prior | 243 | 86
Total | $ 275 | $ 97

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