v3.26.1
Mortgage Loans - Credit Quality Indicators - MF (Details) - Multifamily - USD ($)
$ in Millions
Jun. 30, 2026
Dec. 31, 2025
Financing Receivable, Credit Quality Indicator [Line Items]    
Current fiscal year $ 20,593 $ 67,881
One fiscal year before 77,750 54,475
Two fiscal years before 54,176 52,867
Three fiscal years before 51,872 56,208
Four fiscal years before 55,120 61,785
Prior 274,051 230,737
Total mortgage loans 533,562 523,953
Pass    
Financing Receivable, Credit Quality Indicator [Line Items]    
Current fiscal year 20,593 67,503
One fiscal year before 77,357 52,368
Two fiscal years before 51,281 48,990
Three fiscal years before 47,579 49,486
Four fiscal years before 49,282 58,248
Prior 259,460 218,704
Total mortgage loans 505,552 495,299
Special Mention    
Financing Receivable, Credit Quality Indicator [Line Items]    
Current fiscal year 0 0
One fiscal year before 0 187
Two fiscal years before 64 124
Three fiscal years before 15 155
Four fiscal years before 214 246
Prior 808 793
Total mortgage loans 1,101 1,505
Substandard    
Financing Receivable, Credit Quality Indicator [Line Items]    
Current fiscal year 0 378
One fiscal year before 380 1,920
Two fiscal years before 2,831 3,753
Three fiscal years before 4,276 6,567
Four fiscal years before 5,624 3,291
Prior 13,761 11,239
Total mortgage loans 26,872 27,148
Doubtful    
Financing Receivable, Credit Quality Indicator [Line Items]    
Current fiscal year 0 0
One fiscal year before 13 0
Two fiscal years before 0 0
Three fiscal years before 2 0
Four fiscal years before 0 0
Prior 22 1
Total mortgage loans 37 1
Current-year write-offs    
Financing Receivable, Credit Quality Indicator [Line Items]    
Current fiscal year 0 0
One fiscal year before 0 17
Two fiscal years before 28 111
Three fiscal years before 74 108
Four fiscal years before 90 66
Prior 252 168
Total mortgage loans $ 444 $ 470