Annual report pursuant to Section 13 and 15(d)

Fair Value - Summary of Commercial Mortgage Loans (Details)

v3.22.0.1
Fair Value - Summary of Commercial Mortgage Loans (Details) - Commercial Mortgage Loans [Member]
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Maximum [Member] | Weighted average remaining life in months [Member]    
Fair Value Non Recourse Debt Measured On Recurring And Nonrecurring Basis Fair Value Measurement [Line Items]    
Weighted-average remaining life (in months)   4 years 1 month 6 days
Maximum [Member] | Weighted-average prepayment speed (SMM) [Member]    
Fair Value Non Recourse Debt Measured On Recurring And Nonrecurring Basis Fair Value Measurement [Line Items]    
Weighted-average prepayment speed (SMM)   32.00%
Minimum [Member] | Weighted average remaining life in months [Member]    
Fair Value Non Recourse Debt Measured On Recurring And Nonrecurring Basis Fair Value Measurement [Line Items]    
Weighted-average remaining life (in months)   1 year 10 months 24 days
Minimum [Member] | Weighted-average prepayment speed (SMM) [Member]    
Fair Value Non Recourse Debt Measured On Recurring And Nonrecurring Basis Fair Value Measurement [Line Items]    
Weighted-average prepayment speed (SMM)   17.70%
Weighted Average [Member] | Weighted average remaining life in months [Member]    
Fair Value Non Recourse Debt Measured On Recurring And Nonrecurring Basis Fair Value Measurement [Line Items]    
Weighted-average remaining life (in months) 4 months 3 months 12 days
Weighted Average [Member] | Weighted-average prepayment speed (SMM) [Member]    
Fair Value Non Recourse Debt Measured On Recurring And Nonrecurring Basis Fair Value Measurement [Line Items]    
Weighted-average prepayment speed (SMM) 14.00% 21.40%
Weighted Average [Member] | Discount rate [Member]    
Fair Value Non Recourse Debt Measured On Recurring And Nonrecurring Basis Fair Value Measurement [Line Items]    
Discount rate 3.10% 5.80%