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v3.23.1

Commercial Mortgage Loans, Subordinate Loans and Other Lending Assets, Net - Schedule of Mortgage Loans by Property Type and Geographic Distribution (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | ---
Mar. 31, 2023 | Dec. 31, 2022 | Mar. 31, 2022 | Dec. 31, 2021
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Carrying Value | $ 8,502,335 | $ 8,708,214 |  |
General CECL allowance | (30,267) | (26,224) |  |
Carrying value, net | $ 8,472,068 | $ 8,681,990 |  |
Mortgage loans on real estate, commercial and consumer, percentage of portfolio | 100.00% | 100.00% |  |
General CECL Allowance on unfunded commitments | $ 4,695 | $ 4,347 | $ 3,928 | $ 3,106
Off-balance-sheet, credit loss, liability, amount excluded | 4,700 | 4,300 |  |
United Kingdom |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Carrying Value | $ 2,421,641 | $ 2,470,532 |  |
Mortgage loans on real estate, commercial and consumer, percentage of portfolio | 28.50% | 28.40% |  |
New York City |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Carrying Value | $ 2,011,244 | $ 2,049,493 |  |
Mortgage loans on real estate, commercial and consumer, percentage of portfolio | 23.70% | 23.50% |  |
Other Europe |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Carrying Value | $ 1,442,910 | $ 1,542,462 |  |
Mortgage loans on real estate, commercial and consumer, percentage of portfolio | 17.00% | 17.70% |  |
Germany |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Percentage of Portfolio | 5.00% | 4.90% |  |
Italy |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Percentage of Portfolio | 460.00% | 5.40% |  |
Spain |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Percentage of Portfolio | 4.00% | 3.80% |  |
Sweden |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Percentage of Portfolio | 290.00% | 2.80% |  |
Ireland |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Percentage of Portfolio | 0.50% | 0.70% |  |
Midwest |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Carrying Value | $ 585,238 | $ 592,756 |  |
Mortgage loans on real estate, commercial and consumer, percentage of portfolio | 6.90% | 6.80% |  |
Southeast |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Carrying Value | $ 565,306 | $ 642,542 |  |
Mortgage loans on real estate, commercial and consumer, percentage of portfolio | 6.60% | 7.40% |  |
West |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Carrying Value | $ 605,164 | $ 584,247 |  |
Mortgage loans on real estate, commercial and consumer, percentage of portfolio | 7.10% | 6.70% |  |
Other |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Carrying Value | $ 870,832 | $ 826,182 |  |
Mortgage loans on real estate, commercial and consumer, percentage of portfolio | 10.20% | 9.50% |  |
Percentage of Portfolio | 80.00% | 0.30% |  |
Northeast |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Percentage of Portfolio | 560.00% | 5.50% |  |
Southwest |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Percentage of Portfolio | 240.00% | 2.30% |  |
Mid-Atlantic |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Percentage of Portfolio | 140.00% | 1.40% |  |
Hotel |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Carrying Value | $ 1,988,065 | $ 2,117,079 |  |
Mortgage loans on real estate, commercial and consumer, percentage of portfolio | 23.40% | 24.30% |  |
Office |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Carrying Value | $ 1,484,536 | $ 1,671,006 |  |
Mortgage loans on real estate, commercial and consumer, percentage of portfolio | 17.50% | 19.20% |  |
Residential |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Carrying Value | $ 1,602,078 | $ 1,537,541 |  |
Mortgage loans on real estate, commercial and consumer, percentage of portfolio | 18.80% | 17.70% |  |
Retail Site |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Carrying Value | $ 1,389,601 | $ 1,364,752 |  |
Mortgage loans on real estate, commercial and consumer, percentage of portfolio | 16.30% | 15.70% |  |
Health Care |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Carrying Value | $ 576,639 | $ 575,144 |  |
Mortgage loans on real estate, commercial and consumer, percentage of portfolio | 6.80% | 6.60% |  |
Mixed Use |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Carrying Value | $ 569,927 | $ 559,809 |  |
Mortgage loans on real estate, commercial and consumer, percentage of portfolio | 6.70% | 6.40% |  |
Industrial Property |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Carrying Value | $ 299,323 | $ 296,860 |  |
Mortgage loans on real estate, commercial and consumer, percentage of portfolio | 3.50% | 3.40% |  |
Other |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Carrying Value | $ 592,166 | $ 586,023 |  |
Mortgage loans on real estate, commercial and consumer, percentage of portfolio | 7.00% | 6.70% |  |
Parking Garage |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Percentage of Portfolio | 3.20% | 3.10% |  |
Urban Predevelopment |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Percentage of Portfolio | 140.00% | 1.30% |  |
Caravan Park |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Percentage of Portfolio | 2.40% | 2.30% |  |

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