v3.23.1
Lending Activities - Credit quality of residential mortgages (Details) - USD ($)
$ in Millions
Dec. 31, 2022
Dec. 31, 2021
Financing Receivable, Credit Quality Indicator [Line Items]    
Total $ 45,166 $ 39,884
Residential mortgages    
Financing Receivable, Credit Quality Indicator [Line Items]    
2022 995 2,561
2021 2,935 943
2020 849 389
2019 322 156
2018 119 159
Prior 636 464
Total 5,856 4,672
780 and greater | Residential mortgages    
Financing Receivable, Credit Quality Indicator [Line Items]    
2022 294 1,398
2021 2,141 678
2020 652 284
2019 229 100
2018 76 107
Prior 437 325
Total 3,829 2,892
720 - 779 | Residential mortgages    
Financing Receivable, Credit Quality Indicator [Line Items]    
2022 536 1,118
2021 711 225
2020 167 83
2019 75 41
2018 32 36
Prior 134 94
Total 1,655 1,597
660 - 719 | Residential mortgages    
Financing Receivable, Credit Quality Indicator [Line Items]    
2022 163 44
2021 79 39
2020 28 20
2019 16 11
2018 9 13
Prior 47 33
Total 342 160
600 - 659 | Residential mortgages    
Financing Receivable, Credit Quality Indicator [Line Items]    
2022 2 1
2021 4 1
2020 2 2
2019 1 3
2018 2 2
Prior 13 6
Total 24 15
Less than 600 | Residential mortgages    
Financing Receivable, Credit Quality Indicator [Line Items]    
2022 0 0
2021 0 0
2020 0 0
2019 1 1
2018 0 1
Prior 5 6
Total $ 6 $ 8