v3.25.4
Lending Activities - Credit quality of residential mortgages (Details) - USD ($)
$ in Millions
Dec. 31, 2025
Dec. 31, 2024
Financing Receivable, Credit Quality Indicator [Line Items]    
Total $ 55,208 $ 53,539
Residential mortgages    
Financing Receivable, Credit Quality Indicator [Line Items]    
Financing receivable, excluding accrued interest, year one 2,033 3,349
Financing receivable, excluding accrued interest, year two 3,346 2,131
Financing receivable, excluding accrued interest, year three 1,810 1,557
Financing receivable, excluding accrued interest, year four 1,365 3,027
Financing receivable, excluding accrued interest, year five 2,785 819
Prior 2,500 1,852
Total 13,839 12,735
Residential mortgages | Consumer Borrower    
Financing Receivable, Credit Quality Indicator [Line Items]    
Total 7,800 8,400
780 and greater | Residential mortgages    
Financing Receivable, Credit Quality Indicator [Line Items]    
Financing receivable, excluding accrued interest, year one 595 1,075
Financing receivable, excluding accrued interest, year two 974 667
Financing receivable, excluding accrued interest, year three 570 690
Financing receivable, excluding accrued interest, year four 616 2,258
Financing receivable, excluding accrued interest, year five 2,129 617
Prior 1,384 863
Total 6,268 6,170
720 - 779 | Residential mortgages    
Financing Receivable, Credit Quality Indicator [Line Items]    
Financing receivable, excluding accrued interest, year one 1,044 1,647
Financing receivable, excluding accrued interest, year two 1,740 1,095
Financing receivable, excluding accrued interest, year three 926 579
Financing receivable, excluding accrued interest, year four 529 582
Financing receivable, excluding accrued interest, year five 509 149
Prior 543 440
Total 5,291 4,492
660 - 719 | Residential mortgages    
Financing Receivable, Credit Quality Indicator [Line Items]    
Financing receivable, excluding accrued interest, year one 287 609
Financing receivable, excluding accrued interest, year two 578 355
Financing receivable, excluding accrued interest, year three 292 235
Financing receivable, excluding accrued interest, year four 180 150
Financing receivable, excluding accrued interest, year five 125 38
Prior 349 336
Total 1,811 1,723
600 - 659 | Residential mortgages    
Financing Receivable, Credit Quality Indicator [Line Items]    
Financing receivable, excluding accrued interest, year one 107 15
Financing receivable, excluding accrued interest, year two 54 12
Financing receivable, excluding accrued interest, year three 17 34
Financing receivable, excluding accrued interest, year four 28 25
Financing receivable, excluding accrued interest, year five 15 10
Prior 158 146
Total 379 242
Less than 600 | Residential mortgages    
Financing Receivable, Credit Quality Indicator [Line Items]    
Financing receivable, excluding accrued interest, year one 0 3
Financing receivable, excluding accrued interest, year two 0 2
Financing receivable, excluding accrued interest, year three 5 19
Financing receivable, excluding accrued interest, year four 12 12
Financing receivable, excluding accrued interest, year five 7 5
Prior 66 67
Total $ 90 $ 108