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Loans and Related Allowance for Credit Losses (Home Equity and Residential Real Estate Credit Quality Indicators) (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2023 | Sep. 30, 2022 | Sep. 30, 2023 | Sep. 30, 2022 | Dec. 31, 2022
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract] |  |  |  |  |  |
Total loans, net | [1] | $ 318,416 |  | $ 318,416 |  | $ 326,025
Gross charge-offs |  |  |  |  |  |
Total |  | 233 | $ 222 | 808 | $ 668 |
Residential real estate |  |  |  |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract] |  |  |  |  |  |
Year one |  | 4,442 |  | 4,442 |  | 10,594
Year two |  | 10,192 |  | 10,192 |  | 16,650
Year three |  | 15,695 |  | 15,695 |  | 7,392
Year four |  | 6,945 |  | 6,945 |  | 2,482
Year five |  | 2,310 |  | 2,310 |  | 878
Prior |  | 7,775 |  | 7,775 |  | 7,893
Total loans, net |  | 47,359 |  | 47,359 |  | 45,889
Gross charge-offs |  |  |  |  |  |
Year two |  |  |  | 1 |  |
Year four |  |  |  | 1 |  |
Prior |  |  |  | 4 |  |
Total |  |  |  | 6 |  |
Home equity |  |  |  |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract] |  |  |  |  |  |
Year two |  |  |  |  |  | 180
Year three |  | 168 |  | 168 |  | 2,143
Year four |  | 1,971 |  | 1,971 |  | 997
Year five |  | 897 |  | 897 |  | 291
Prior |  | 2,723 |  | 2,723 |  | 2,897
Revolving Loans |  | 8,461 |  | 8,461 |  | 8,902
Revolving Loans Converted to Term |  | 11,939 |  | 11,939 |  | 10,573
Total loans, net |  | 26,159 |  | 26,159 |  | 25,983
Gross charge-offs |  |  |  |  |  |
Prior |  |  |  | 2 |  |
Revolving Loans |  |  |  | 4 |  |
Revolving Loans Converted to Term |  |  |  | 9 |  |
Total |  |  |  | 15 |  |
Greater than or equal to 780 | Residential real estate |  |  |  |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract] |  |  |  |  |  |
Year one |  | 2,418 |  | 2,418 |  | 6,825
Year two |  | 7,728 |  | 7,728 |  | 12,596
Year three |  | 12,239 |  | 12,239 |  | 5,276
Year four |  | 5,060 |  | 5,060 |  | 1,623
Year five |  | 1,538 |  | 1,538 |  | 463
Prior |  | 4,099 |  | 4,099 |  | 4,027
Total loans, net |  | 33,082 |  | 33,082 |  | 30,810
Greater than or equal to 780 | Home equity |  |  |  |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract] |  |  |  |  |  |
Year two |  |  |  |  |  | 110
Year three |  | 107 |  | 107 |  | 1,357
Year four |  | 1,283 |  | 1,283 |  | 554
Year five |  | 503 |  | 503 |  | 155
Prior |  | 1,685 |  | 1,685 |  | 1,791
Revolving Loans |  | 4,700 |  | 4,700 |  | 5,093
Revolving Loans Converted to Term |  | 6,039 |  | 6,039 |  | 5,545
Total loans, net |  | 14,317 |  | 14,317 |  | 14,605
720 to 779 | Residential real estate |  |  |  |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract] |  |  |  |  |  |
Year one |  | 1,495 |  | 1,495 |  | 3,172
Year two |  | 1,857 |  | 1,857 |  | 3,024
Year three |  | 2,547 |  | 2,547 |  | 1,369
Year four |  | 1,214 |  | 1,214 |  | 476
Year five |  | 414 |  | 414 |  | 180
Prior |  | 1,439 |  | 1,439 |  | 1,457
Total loans, net |  | 8,966 |  | 8,966 |  | 9,678
720 to 779 | Home equity |  |  |  |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract] |  |  |  |  |  |
Year two |  |  |  |  |  | 47
Year three |  | 38 |  | 38 |  | 515
Year four |  | 443 |  | 443 |  | 248
Year five |  | 223 |  | 223 |  | 64
Prior |  | 525 |  | 525 |  | 567
Revolving Loans |  | 2,203 |  | 2,203 |  | 2,305
Revolving Loans Converted to Term |  | 3,193 |  | 3,193 |  | 2,843
Total loans, net |  | 6,625 |  | 6,625 |  | 6,589
660 to 719 | Residential real estate |  |  |  |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract] |  |  |  |  |  |
Year one |  | 302 |  | 302 |  | 514
Year two |  | 514 |  | 514 |  | 744
Year three |  | 670 |  | 670 |  | 378
Year four |  | 322 |  | 322 |  | 189
Year five |  | 176 |  | 176 |  | 98
Prior |  | 782 |  | 782 |  | 796
Total loans, net |  | 2,766 |  | 2,766 |  | 2,719
660 to 719 | Home equity |  |  |  |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract] |  |  |  |  |  |
Year two |  |  |  |  |  | 19
Year three |  | 18 |  | 18 |  | 211
Year four |  | 185 |  | 185 |  | 140
Year five |  | 117 |  | 117 |  | 42
Prior |  | 286 |  | 286 |  | 288
Revolving Loans |  | 1,210 |  | 1,210 |  | 1,146
Revolving Loans Converted to Term |  | 1,756 |  | 1,756 |  | 1,449
Total loans, net |  | 3,572 |  | 3,572 |  | 3,295
Less than 660 | Residential real estate |  |  |  |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract] |  |  |  |  |  |
Year one |  | 86 |  | 86 |  | 63
Year two |  | 64 |  | 64 |  | 108
Year three |  | 129 |  | 129 |  | 110
Year four |  | 110 |  | 110 |  | 88
Year five |  | 87 |  | 87 |  | 71
Prior |  | 676 |  | 676 |  | 740
Total loans, net |  | 1,152 |  | 1,152 |  | 1,180
Less than 660 | Home equity |  |  |  |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract] |  |  |  |  |  |
Year two |  |  |  |  |  | 4
Year three |  | 5 |  | 5 |  | 57
Year four |  | 58 |  | 58 |  | 54
Year five |  | 53 |  | 53 |  | 29
Prior |  | 219 |  | 219 |  | 242
Revolving Loans |  | 338 |  | 338 |  | 342
Revolving Loans Converted to Term |  | 895 |  | 895 |  | 671
Total loans, net |  | 1,568 |  | 1,568 |  | 1,399
No FICO score available | Residential real estate |  |  |  |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract] |  |  |  |  |  |
Year one |  | 132 |  | 132 |  | 11
Year two |  | 11 |  | 11 |  | 163
Year three |  | 92 |  | 92 |  | 193
Year four |  | 173 |  | 173 |  | 67
Year five |  | 58 |  | 58 |  | 38
Prior |  | 275 |  | 275 |  | 337
Total loans, net |  | 741 |  | 741 |  | 809
No FICO score available | Home equity |  |  |  |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract] |  |  |  |  |  |
Year three |  |  |  |  |  | 3
Year four |  | 2 |  | 2 |  | 1
Year five |  | 1 |  | 1 |  | 1
Prior |  | 8 |  | 8 |  | 9
Revolving Loans |  | 10 |  | 10 |  | 16
Revolving Loans Converted to Term |  | 56 |  | 56 |  | 65
Total loans, net |  | 77 |  | 77 |  | 95
Government insured or guaranteed loans | Residential real estate |  |  |  |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract] |  |  |  |  |  |
Year one |  | 9 |  | 9 |  | 9
Year two |  | 18 |  | 18 |  | 15
Year three |  | 18 |  | 18 |  | 66
Year four |  | 66 |  | 66 |  | 39
Year five |  | 37 |  | 37 |  | 28
Prior |  | 504 |  | 504 |  | 536
Total loans, net |  | 652 |  | 652 |  | 693
Greater than 100% | Residential real estate |  |  |  |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract] |  |  |  |  |  |
Year one |  | 34 |  | 34 |  | 4
Year two |  | 141 |  | 141 |  | 52
Year three |  | 103 |  | 103 |  | 20
Year four |  | 33 |  | 33 |  | 10
Year five |  | 8 |  | 8 |  | 4
Prior |  | 34 |  | 34 |  | 41
Total loans, net |  | 353 |  | 353 |  | 131
Greater than 100% | Home equity |  |  |  |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract] |  |  |  |  |  |
Year two |  |  |  |  |  | 4
Year three |  | 2 |  | 2 |  | 14
Year four |  | 10 |  | 10 |  | 9
Year five |  | 5 |  | 5 |  | 2
Prior |  | 13 |  | 13 |  | 15
Revolving Loans |  | 294 |  | 294 |  | 268
Revolving Loans Converted to Term |  | 285 |  | 285 |  | 137
Total loans, net |  | 609 |  | 609 |  | 449
Greater than or equal to 80% to 100% | Residential real estate |  |  |  |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract] |  |  |  |  |  |
Year one |  | 1,770 |  | 1,770 |  | 1,185
Year two |  | 3,372 |  | 3,372 |  | 678
Year three |  | 1,044 |  | 1,044 |  | 232
Year four |  | 207 |  | 207 |  | 84
Year five |  | 69 |  | 69 |  | 24
Prior |  | 105 |  | 105 |  | 92
Total loans, net |  | 6,567 |  | 6,567 |  | 2,295
Greater than or equal to 80% to 100% | Home equity |  |  |  |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract] |  |  |  |  |  |
Year two |  |  |  |  |  | 4
Year three |  | 5 |  | 5 |  | 51
Year four |  | 39 |  | 39 |  | 27
Year five |  | 21 |  | 21 |  | 4
Prior |  | 27 |  | 27 |  | 31
Revolving Loans |  | 1,266 |  | 1,266 |  | 854
Revolving Loans Converted to Term |  | 1,949 |  | 1,949 |  | 1,149
Total loans, net |  | 3,307 |  | 3,307 |  | 2,120
Less than 80% | Residential real estate |  |  |  |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract] |  |  |  |  |  |
Year one |  | 2,577 |  | 2,577 |  | 9,396
Year two |  | 6,661 |  | 6,661 |  | 15,844
Year three |  | 14,517 |  | 14,517 |  | 7,074
Year four |  | 6,639 |  | 6,639 |  | 2,346
Year five |  | 2,196 |  | 2,196 |  | 822
Prior |  | 7,129 |  | 7,129 |  | 7,220
Total loans, net |  | 39,719 |  | 39,719 |  | 42,702
Less than 80% | Home equity |  |  |  |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract] |  |  |  |  |  |
Year two |  |  |  |  |  | 172
Year three |  | 161 |  | 161 |  | 2,078
Year four |  | 1,922 |  | 1,922 |  | 961
Year five |  | 871 |  | 871 |  | 285
Prior |  | 2,683 |  | 2,683 |  | 2,851
Revolving Loans |  | 6,901 |  | 6,901 |  | 7,780
Revolving Loans Converted to Term |  | 9,705 |  | 9,705 |  | 9,287
Total loans, net |  | 22,243 |  | 22,243 |  | 23,414
No LTV available | Residential real estate |  |  |  |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract] |  |  |  |  |  |
Year one |  | 52 |  | 52 |  |
Year two |  |  |  |  |  | 61
Year three |  | 13 |  | 13 |  |
Year four |  |  |  |  |  | 3
Prior |  | 3 |  | 3 |  | 4
Total loans, net |  | $ 68 |  | $ 68 |  | $ 68
[1] | Our consolidated assets included the following for which we have elected the fair value option: Loans held for sale of $0.9 billion, Loans held for investment of $1.2 billion and Other assets of $0.1 billion at September 30, 2023. Comparable amounts at December 31, 2022 were $0.9 billion, $1.3 billion and $0.1 billion, respectively.

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