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Investments - Mortgage Loans (Details) - USD ($) $ in Millions | 3 Months Ended |
--- | --- | ---
Mar. 31, 2022 | Mar. 31, 2021 | Dec. 31, 2021
Mortgage loan disclosures |  |  |
Mortgage loans, Total amortized cost | $ 21,281.3 |  | $ 20,324.5
Commercial mortgage loans |  |  |
Mortgage loan disclosures |  |  |
Mortgage loans, purchased | 32.7 | $ 89.2 |
Mortgage loans, sold |  | 66.3 |
Mortgage loans, Total amortized cost | $ 16,860.2 |  | $ 16,394.7
Percent of mortgage loans (as a percent) | 100.00% |  | 100.00%
Commercial mortgage loans | Office |  |  |
Mortgage loan disclosures |  |  |
Mortgage loans, Total amortized cost | $ 4,740.2 |  | $ 4,789.8
Percent of mortgage loans (as a percent) | 28.20% |  | 29.30%
Commercial mortgage loans | Retail |  |  |
Mortgage loan disclosures |  |  |
Mortgage loans, Total amortized cost | $ 1,597.8 |  | $ 1,622.1
Percent of mortgage loans (as a percent) | 9.50% |  | 9.90%
Commercial mortgage loans | Industrial |  |  |
Mortgage loan disclosures |  |  |
Mortgage loans, Total amortized cost | $ 3,143.6 |  | $ 2,966.4
Percent of mortgage loans (as a percent) | 18.60% |  | 18.10%
Commercial mortgage loans | Apartments |  |  |
Mortgage loan disclosures |  |  |
Mortgage loans, Total amortized cost | $ 6,528.6 |  | $ 6,234.3
Percent of mortgage loans (as a percent) | 38.70% |  | 38.00%
Commercial mortgage loans | Hotel |  |  |
Mortgage loan disclosures |  |  |
Mortgage loans, Total amortized cost | $ 75.6 |  | $ 85.7
Percent of mortgage loans (as a percent) | 0.40% |  | 0.50%
Commercial mortgage loans | Mixed use/other |  |  |
Mortgage loan disclosures |  |  |
Mortgage loans, Total amortized cost | $ 774.4 |  | $ 696.4
Percent of mortgage loans (as a percent) | 4.60% |  | 4.20%
Commercial mortgage loans | New England |  |  |
Mortgage loan disclosures |  |  |
Mortgage loans, Total amortized cost | $ 582.8 |  | $ 585.6
Percent of mortgage loans (as a percent) | 3.50% |  | 3.60%
Commercial mortgage loans | Middle Atlantic |  |  |
Mortgage loan disclosures |  |  |
Mortgage loans, Total amortized cost | $ 4,622.1 |  | $ 4,536.5
Percent of mortgage loans (as a percent) | 27.50% |  | 27.70%
Commercial mortgage loans | East North Central |  |  |
Mortgage loan disclosures |  |  |
Mortgage loans, Total amortized cost | $ 645.4 |  | $ 623.9
Percent of mortgage loans (as a percent) | 3.80% |  | 3.80%
Commercial mortgage loans | West North Central |  |  |
Mortgage loan disclosures |  |  |
Mortgage loans, Total amortized cost | $ 355.8 |  | $ 338.6
Percent of mortgage loans (as a percent) | 2.10% |  | 2.10%
Commercial mortgage loans | South Atlantic |  |  |
Mortgage loan disclosures |  |  |
Mortgage loans, Total amortized cost | $ 2,483.6 |  | $ 2,464.9
Percent of mortgage loans (as a percent) | 14.70% |  | 15.00%
Commercial mortgage loans | East South Central |  |  |
Mortgage loan disclosures |  |  |
Mortgage loans, Total amortized cost | $ 344.5 |  | $ 378.9
Percent of mortgage loans (as a percent) | 2.00% |  | 2.30%
Commercial mortgage loans | West South Central |  |  |
Mortgage loan disclosures |  |  |
Mortgage loans, Total amortized cost | $ 1,239.7 |  | $ 1,243.7
Percent of mortgage loans (as a percent) | 7.40% |  | 7.60%
Commercial mortgage loans | Mountain |  |  |
Mortgage loan disclosures |  |  |
Mortgage loans, Total amortized cost | $ 951.8 |  | $ 925.6
Percent of mortgage loans (as a percent) | 5.60% |  | 5.60%
Commercial mortgage loans | Pacific |  |  |
Mortgage loan disclosures |  |  |
Mortgage loans, Total amortized cost | $ 5,123.7 |  | $ 4,864.4
Percent of mortgage loans (as a percent) | 30.40% |  | 29.70%
Commercial mortgage loans | International |  |  |
Mortgage loan disclosures |  |  |
Mortgage loans, Total amortized cost | $ 510.8 |  | $ 432.6
Percent of mortgage loans (as a percent) | 3.00% |  | 2.60%
Residential mortgage loans |  |  |
Mortgage loan disclosures |  |  |
Mortgage loans, purchased | $ 534.3 | 651.0 |
Mortgage loans, sold | 7.1 | $ 37.0 |
Mortgage loans, Total amortized cost | $ 3,750.4 |  | $ 3,319.9

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