v3.22.2.2
Commercial Mortgage Loans, Subordinate Loans and Other Lending Assets, Net - Allocation of Carrying Value of Loan Portfolio Based on Internal Risk Ratings (Details)
$ in Thousands
9 Months Ended 12 Months Ended
Sep. 30, 2022
USD ($)
loan
Dec. 31, 2021
USD ($)
loan
Aug. 03, 2022
USD ($)
Jun. 30, 2022
USD ($)
Mar. 31, 2022
USD ($)
Sep. 30, 2021
USD ($)
Jun. 30, 2021
USD ($)
Mar. 31, 2021
USD ($)
Dec. 31, 2020
USD ($)
Financing Receivable, Credit Quality Indicator [Line Items]                  
Number of Loans | loan 65 67              
Total $ 8,753,291 $ 7,890,848              
Mortgage loans on real estate, commercial and consumer, percentage of portfolio 100.00% 100.00%              
Year 1 $ 2,336,965 $ 2,622,248              
Year 2 2,369,568 644,404              
Year 3 643,652 2,307,948              
Year 4 1,691,069 828,270              
Year 5 511,360 648,727              
Prior 1,200,677 839,251              
General CECL Allowance (21,985) (33,588)              
Total carrying value, net $ 8,731,306 $ 7,857,260 $ 226,500            
Weighted Average Risk Rating 3.1 3.1              
Off-balance sheet, credit loss, liability $ 2,812 $ 3,106   $ 3,999 $ 3,928 $ 2,193 $ 2,444 $ 3,794 $ 3,365
1                  
Financing Receivable, Credit Quality Indicator [Line Items]                  
Number of Loans | loan 0 0              
Total $ 0 $ 0              
Mortgage loans on real estate, commercial and consumer, percentage of portfolio 0.00% 0.00%              
Year 1 $ 0 $ 0              
Year 2 0 0              
Year 3 0 0              
Year 4 0 0              
Year 5 0 0              
Prior $ 0 $ 0              
2                  
Financing Receivable, Credit Quality Indicator [Line Items]                  
Number of Loans | loan 1 1              
Total $ 32,000 $ 32,000              
Mortgage loans on real estate, commercial and consumer, percentage of portfolio 0.40% 0.40%              
Year 1 $ 0 $ 0              
Year 2 0 0              
Year 3 0 0              
Year 4 0 0              
Year 5 0 0              
Prior $ 32,000 $ 32,000              
3                  
Financing Receivable, Credit Quality Indicator [Line Items]                  
Number of Loans | loan 60 62              
Total $ 8,291,679 $ 7,372,081              
Mortgage loans on real estate, commercial and consumer, percentage of portfolio 94.70% 93.50%              
Year 1 $ 2,336,965 $ 2,622,248              
Year 2 2,369,568 644,404              
Year 3 643,652 2,307,948              
Year 4 1,691,069 828,270              
Year 5 511,360 389,264              
Prior $ 739,065 $ 579,947              
4                  
Financing Receivable, Credit Quality Indicator [Line Items]                  
Number of Loans | loan 0 1              
Total $ 0 $ 81,980              
Mortgage loans on real estate, commercial and consumer, percentage of portfolio 0.00% 1.00%              
Year 1 $ 0 $ 0              
Year 2 0 0              
Year 3 0 0              
Year 4 0 0              
Year 5 0 81,980              
Prior $ 0 $ 0              
5                  
Financing Receivable, Credit Quality Indicator [Line Items]                  
Number of Loans | loan 4 3              
Total $ 429,612 $ 404,787              
Mortgage loans on real estate, commercial and consumer, percentage of portfolio 4.90% 5.10%              
Year 1 $ 0 $ 0              
Year 2 0 0              
Year 3 0 0              
Year 4 0 0              
Year 5 0 177,483              
Prior $ 429,612 $ 227,304