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Investments (Commercial Mortgage and Other Loans) (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022
Commercial Mortgage and Other Loans [Line Items] |  |
Commercial mortgage and agricultural property loans by property type | $ 59,185 | $ 56,334
Other loans | 580 | 614
Total commercial mortgage and other loans | $ 59,305 | $ 56,745
% of Total | 100.00% | 100.00%
Net carrying value of commercial loans held for sale | $ 519 | $ 137
Commercial Mortgage Loans |  |
Commercial Mortgage and Other Loans [Line Items] |  |
Commercial mortgage and agricultural property loans by property type | $ 51,759 | $ 49,477
% of Total | 87.50% | 87.80%
Commercial mortgage and agricultural property loans |  |
Commercial Mortgage and Other Loans [Line Items] |  |
Allowance for credit losses | $ (459) | $ (201)
Total net loans | 58,726 | 56,133
Uncollateralized loans |  |
Commercial Mortgage and Other Loans [Line Items] |  |
Other loans | 425 | 463
Residential property loans |  |
Commercial Mortgage and Other Loans [Line Items] |  |
Other loans | 30 | 43
Other collateralized loans |  |
Commercial Mortgage and Other Loans [Line Items] |  |
Other loans | 125 | 108
Other loans |  |
Commercial Mortgage and Other Loans [Line Items] |  |
Total net loans | 579 | 612
Allowance for credit losses, Other loans | (1) | (2)
Office |  |
Commercial Mortgage and Other Loans [Line Items] |  |
Commercial mortgage and agricultural property loans by property type | $ 8,402 | $ 9,096
% of Total | 14.20% | 16.20%
Retail |  |
Commercial Mortgage and Other Loans [Line Items] |  |
Commercial mortgage and agricultural property loans by property type | $ 5,384 | $ 6,103
% of Total | 9.10% | 10.80%
Apartments/Multi-Family |  |
Commercial Mortgage and Other Loans [Line Items] |  |
Commercial mortgage and agricultural property loans by property type | $ 16,555 | $ 15,381
% of Total | 28.00% | 27.30%
Industrial |  |
Commercial Mortgage and Other Loans [Line Items] |  |
Commercial mortgage and agricultural property loans by property type | $ 15,263 | $ 13,079
% of Total | 25.80% | 23.20%
Hospitality |  |
Commercial Mortgage and Other Loans [Line Items] |  |
Commercial mortgage and agricultural property loans by property type | $ 2,086 | $ 2,027
% of Total | 3.50% | 3.60%
Other |  |
Commercial Mortgage and Other Loans [Line Items] |  |
Commercial mortgage and agricultural property loans by property type | $ 4,069 | $ 3,791
% of Total | 6.90% | 6.70%
Agricultural property loans |  |
Commercial Mortgage and Other Loans [Line Items] |  |
Commercial mortgage and agricultural property loans by property type | $ 7,426 | $ 6,857
% of Total | 12.50% | 12.20%

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