v3.25.3
Mortgage Loans - Amortized Cost Basis of Multifamily Held-for-Investment Loans by Credit Quality Indicator by Vintage (Details) - USD ($)
$ in Millions
Sep. 30, 2025
Dec. 31, 2024
Financing Receivable, Credit Quality Indicator [Line Items]    
Total $ 3,249,749 $ 3,177,386
Multifamily    
Financing Receivable, Credit Quality Indicator [Line Items]    
Current fiscal year 35,161 27,763
One year before current fiscal year 28,858 14,576
Two years before current fiscal year 14,064 17,231
Three years before current fiscal year 16,804 7,547
Four years before current fiscal year 7,581 6,487
Five years before current fiscal year 14,602 8,524
Revolving Loans 2,145 2,426
Total 119,215 84,554
Pass | Multifamily    
Financing Receivable, Credit Quality Indicator [Line Items]    
Current fiscal year 35,161 27,713
One year before current fiscal year 28,772 14,471
Two years before current fiscal year 13,655 16,548
Three years before current fiscal year 16,010 7,179
Four years before current fiscal year 7,190 6,201
Five years before current fiscal year 13,652 7,921
Revolving Loans 2,145 2,426
Total 116,585 82,459
Special mention | Multifamily    
Financing Receivable, Credit Quality Indicator [Line Items]    
Current fiscal year 0 50
One year before current fiscal year 36 76
Two years before current fiscal year 184 239
Three years before current fiscal year 177 39
Four years before current fiscal year 110 86
Five years before current fiscal year 479 327
Revolving Loans 0 0
Total 986 817
Substandard | Multifamily    
Financing Receivable, Credit Quality Indicator [Line Items]    
Current fiscal year 0 0
One year before current fiscal year 50 29
Two years before current fiscal year 225 444
Three years before current fiscal year 617 329
Four years before current fiscal year 281 200
Five years before current fiscal year 471 276
Revolving Loans 0 0
Total 1,644 1,278
Doubtful | Multifamily    
Financing Receivable, Credit Quality Indicator [Line Items]    
Current fiscal year 0 0
One year before current fiscal year 0 0
Two years before current fiscal year 0 0
Three years before current fiscal year 0 0
Four years before current fiscal year 0 0
Five years before current fiscal year 0 0
Revolving Loans 0 0
Total $ 0 $ 0