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Credit Quality And Allowance For Credit Losses | 3 Months Ended
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Mar. 31, 2023
Credit Loss [Abstract] |
Credit Quality And Allowance For Credit Losses | CREDIT QUALITY AND ALLOWANCE FOR CREDIT LOSSES The following table presents an aging analysis of the amortized cost basis of loans.
| Loans Past Due and Still Accruing |  |  |  |  |  |
(in millions) | 30-59 Days |  | 60-89 Days |  | 90 Days or More |  | Total |  | Nonaccrual Loans |  | Current Loans |  | Total Loans
March 31, 2023 |  |  |  |  |  |  |  |  |  |  |  |  |
Business loans: |  |  |  |  |  |  |  |  |  |  |  |  |
Commercial | $ | 20 |  |  | $ | 19 |  |  | $ | 9 |  |  | $ | 48 |  |  | $ | 134 |  |  | $ | 31,448 |  |  | $ | 31,630 |
Real estate construction: |  |  |  |  |  |  |  |  |  |  |  |  |
Commercial Real Estate business line (a) | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | 2,946 |  |  | 2,946 |
Other business lines (b) | — |  |  | — |  |  | — |  |  | — |  |  | 3 |  |  | 618 |  |  | 621 |
Total real estate construction | — |  |  | — |  |  | — |  |  | — |  |  | 3 |  |  | 3,564 |  |  | 3,567 |
Commercial mortgage: |  |  |  |  |  |  |  |  |  |  |  |  |
Commercial Real Estate business line (a) | 46 |  |  | 20 |  |  | — |  |  | 66 |  |  | 1 |  |  | 4,796 |  |  | 4,863 |
Other business lines (b) | 30 |  |  | 1 |  |  | 11 |  |  | 42 |  |  | 23 |  |  | 8,664 |  |  | 8,729 |
Total commercial mortgage | 76 |  |  | 21 |  |  | 11 |  |  | 108 |  |  | 24 |  |  | 13,460 |  |  | 13,592 |
Lease financing | 5 |  |  | — |  |  | — |  |  | 5 |  |  | — |  |  | 761 |  |  | 766 |
International | 8 |  |  | — |  |  | — |  |  | 8 |  |  | 3 |  |  | 1,222 |  |  | 1,233 |
Total business loans | 109 |  |  | 40 |  |  | 20 |  |  | 169 |  |  | 164 |  |  | 50,455 |  |  | 50,788 |
Retail loans: |  |  |  |  |  |  |  |  |  |  |  |  |
Residential mortgage | 6 |  |  | 1 |  |  | — |  |  | 7 |  |  | 39 |  |  | 1,776 |  |  | 1,822 |
Consumer: |  |  |  |  |  |  |  |  |  |  |  |  |
Home equity | 4 |  |  | 2 |  |  | — |  |  | 6 |  |  | 18 |  |  | 1,760 |  |  | 1,784 |
Other consumer | 5 |  |  | 1 |  |  | — |  |  | 6 |  |  | — |  |  | 526 |  |  | 532 |
Total consumer | 9 |  |  | 3 |  |  | — |  |  | 12 |  |  | 18 |  |  | 2,286 |  |  | 2,316 |
Total retail loans | 15 |  |  | 4 |  |  | — |  |  | 19 |  |  | 57 |  |  | 4,062 |  |  | 4,138 |
Total loans | $ | 124 |  |  | $ | 44 |  |  | $ | 20 |  |  | $ | 188 |  |  | $ | 221 |  |  | $ | 54,517 |  |  | $ | 54,926 |
December 31, 2022 |  |  |  |  |  |  |  |  |  |  |  |  |
Business loans: |  |  |  |  |  |  |  |  |  |  |  |  |
Commercial | $ | 238 |  |  | $ | 13 |  |  | $ | 20 |  |  | $ | 271 |  |  | $ | 142 |  |  | $ | 30,496 |  |  | $ | 30,909 |
Real estate construction: |  |  |  |  |  |  |  |  |  |  |  |  |
Commercial Real Estate business line (a) | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | 2,505 |  |  | 2,505 |
Other business lines (b) | 2 |  |  | — |  |  | — |  |  | 2 |  |  | 3 |  |  | 595 |  |  | 600 |
Total real estate construction | 2 |  |  | — |  |  | — |  |  | 2 |  |  | 3 |  |  | 3,100 |  |  | 3,105 |
Commercial mortgage: |  |  |  |  |  |  |  |  |  |  |  |  |
Commercial Real Estate business line (a) | — |  |  | 6 |  |  | — |  |  | 6 |  |  | 1 |  |  | 4,674 |  |  | 4,681 |
Other business lines (b) | 64 |  |  | 5 |  |  | 3 |  |  | 72 |  |  | 22 |  |  | 8,531 |  |  | 8,625 |
Total commercial mortgage | 64 |  |  | 11 |  |  | 3 |  |  | 78 |  |  | 23 |  |  | 13,205 |  |  | 13,306 |
Lease financing | 6 |  |  | — |  |  | — |  |  | 6 |  |  | — |  |  | 754 |  |  | 760 |
International | — |  |  | 9 |  |  | — |  |  | 9 |  |  | 3 |  |  | 1,185 |  |  | 1,197 |
Total business loans | 310 |  |  | 33 |  |  | 23 |  |  | 366 |  |  | 171 |  |  | 48,740 |  |  | 49,277 |
Retail loans: |  |  |  |  |  |  |  |  |  |  |  |  |
Residential mortgage | 22 |  |  | — |  |  | — |  |  | 22 |  |  | 53 |  |  | 1,739 |  |  | 1,814 |
Consumer: |  |  |  |  |  |  |  |  |  |  |  |  |
Home equity | 4 |  |  | 3 |  |  | — |  |  | 7 |  |  | 15 |  |  | 1,754 |  |  | 1,776 |
Other consumer | 5 |  |  | 1 |  |  | — |  |  | 6 |  |  | 1 |  |  | 528 |  |  | 535 |
Total consumer | 9 |  |  | 4 |  |  | — |  |  | 13 |  |  | 16 |  |  | 2,282 |  |  | 2,311 |
Total retail loans | 31 |  |  | 4 |  |  | — |  |  | 35 |  |  | 69 |  |  | 4,021 |  |  | 4,125 |
Total loans | $ | 341 |  |  | $ | 37 |  |  | $ | 23 |  |  | $ | 401 |  |  | $ | 240 |  |  | $ | 52,761 |  |  | $ | 53,402 |
(a)Primarily loans to real estate developers. (b)Primarily loans secured by owner-occupied real estate. The following table presents loans by credit quality indicator (CQI) and vintage year. CQI is based on internal risk ratings assigned to each business loan at the time of approval and subjected to subsequent reviews, generally at least annually, and to pools of retail loans with similar risk characteristics. Vintage year is the year of origination or major modification.
| March 31, 2023 |  |
| Vintage Year |  |  |  |  |  |  |  |
(in millions) | 2023 |  | 2022 |  | 2021 |  | 2020 |  | 2019 |  | Prior |  | Revolvers |  | Revolvers Converted to Term |  | Total |  |
Business loans: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commercial: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Pass (a) | $ | 934 |  |  | $ | 3,690 |  |  | $ | 3,346 |  |  | $ | 818 |  |  | $ | 858 |  |  | $ | 1,470 |  |  | $ | 19,089 |  |  | $ | 10 |  |  | $ | 30,215 |  |  |
Criticized (b) | — |  |  | 105 |  |  | 295 |  |  | 57 |  |  | 110 |  |  | 117 |  |  | 730 |  |  | 1 |  |  | 1,415 |  |  |
Total commercial | 934 |  |  | 3,795 |  |  | 3,641 |  |  | 875 |  |  | 968 |  |  | 1,587 |  |  | 19,819 |  |  | 11 |  |  | 31,630 |  |  |
Commercial gross charge-offs | — |  |  | — |  |  | — |  |  | 1 |  |  | 1 |  |  | 9 |  |  | — |  |  | — |  |  | 11 |  |  |
Real estate construction |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Pass (a) | 57 |  |  | 1,064 |  |  | 1,316 |  |  | 588 |  |  | 151 |  |  | 119 |  |  | 243 |  |  | — |  |  | 3,538 |  |  |
Criticized (b) | — |  |  | 26 |  |  | — |  |  | 3 |  |  | — |  |  | — |  |  | — |  |  | — |  |  | 29 |  |  |
Total real estate construction | 57 |  |  | 1,090 |  |  | 1,316 |  |  | 591 |  |  | 151 |  |  | 119 |  |  | 243 |  |  | — |  |  | 3,567 |  |  |
Real estate construction gross charge-offs | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  |
Commercial mortgage |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Pass (a) | 570 |  |  | 3,388 |  |  | 2,424 |  |  | 1,797 |  |  | 1,275 |  |  | 2,979 |  |  | 810 |  |  | — |  |  | 13,243 |  |  |
Criticized (b) | — |  |  | 52 |  |  | 17 |  |  | 14 |  |  | 110 |  |  | 155 |  |  | 1 |  |  | — |  |  | 349 |  |  |
Total commercial mortgage | 570 |  |  | 3,440 |  |  | 2,441 |  |  | 1,811 |  |  | 1,385 |  |  | 3,134 |  |  | 811 |  |  | — |  |  | 13,592 |  |  |
Commercial mortgage gross charge-offs | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  |
Lease financing |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Pass (a) | 68 |  |  | 289 |  |  | 126 |  |  | 61 |  |  | 43 |  |  | 151 |  |  | — |  |  | — |  |  | 738 |  |  |
Criticized (b) | — |  |  | 9 |  |  | 3 |  |  | 2 |  |  | 8 |  |  | 6 |  |  | — |  |  | — |  |  | 28 |  |  |
Total lease financing | 68 |  |  | 298 |  |  | 129 |  |  | 63 |  |  | 51 |  |  | 157 |  |  | — |  |  | — |  |  | 766 |  |  |
Lease financing gross charge-offs | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  |
International |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Pass (a) | 275 |  |  | 142 |  |  | 124 |  |  | 45 |  |  | 76 |  |  | 22 |  |  | 515 |  |  | — |  |  | 1,199 |  |  |
Criticized (b) | 7 |  |  | 4 |  |  | — |  |  | 2 |  |  | — |  |  | 12 |  |  | 9 |  |  | — |  |  | 34 |  |  |
Total international | 282 |  |  | 146 |  |  | 124 |  |  | 47 |  |  | 76 |  |  | 34 |  |  | 524 |  |  | — |  |  | 1,233 |  |  |
International gross charge-offs | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  |
Total business loans | 1,911 |  |  | 8,769 |  |  | 7,651 |  |  | 3,387 |  |  | 2,631 |  |  | 5,031 |  |  | 21,397 |  |  | 11 |  |  | 50,788 |  |  |
Retail loans: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Residential mortgage |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Pass (a) | 53 |  |  | 314 |  |  | 391 |  |  | 475 |  |  | 136 |  |  | 414 |  |  | — |  |  | — |  |  | 1,783 |  |  |
Criticized (b) | 1 |  |  | 2 |  |  | 1 |  |  | — |  |  | 2 |  |  | 33 |  |  | — |  |  | — |  |  | 39 |  |  |
Total residential mortgage | 54 |  |  | 316 |  |  | 392 |  |  | 475 |  |  | 138 |  |  | 447 |  |  | — |  |  | — |  |  | 1,822 |  |  |
Residential mortgage gross charge-offs | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  |
Consumer: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Home equity |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Pass (a) | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | 8 |  |  | 1,717 |  |  | 38 |  |  | 1,763 |  |  |
Criticized (b) | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | 18 |  |  | 3 |  |  | 21 |  |  |
Total home equity | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | 8 |  |  | 1,735 |  |  | 41 |  |  | 1,784 |  |  |
Home equity gross charge-offs | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | 1 |  |  | — |  |  | 1 |  |  |
Other consumer |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Pass (a) | 6 |  |  | 48 |  |  | 36 |  |  | 50 |  |  | 7 |  |  | 10 |  |  | 372 |  |  | — |  |  | 529 |  |  |
Criticized (b) | — |  |  | — |  |  | — |  |  | — |  |  | 2 |  |  | — |  |  | 1 |  |  | — |  |  | 3 |  |  |
Total other consumer | 6 |  |  | 48 |  |  | 36 |  |  | 50 |  |  | 9 |  |  | 10 |  |  | 373 |  |  | — |  |  | 532 |  |  |
Other consumer gross charge-offs | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  |
Total consumer | 6 |  |  | 48 |  |  | 36 |  |  | 50 |  |  | 9 |  |  | 18 |  |  | 2,108 |  |  | 41 |  |  | 2,316 |  |  |
Total retail loans | 60 |  |  | 364 |  |  | 428 |  |  | 525 |  |  | 147 |  |  | 465 |  |  | 2,108 |  |  | 41 |  |  | 4,138 |  |  |
Total loans | $ | 1,971 |  |  | $ | 9,133 |  |  | $ | 8,079 |  |  | $ | 3,912 |  |  | $ | 2,778 |  |  | $ | 5,496 |  |  | $ | 23,505 |  |  | $ | 52 |  |  | $ | 54,926 |  |  |
Table continues on the following page. |  |
| December 31, 2022 |  |
| Vintage Year |  |  |  |  |  |  |  |
| 2022 |  | 2021 |  | 2020 |  | 2019 |  | 2018 |  | Prior |  | Revolvers |  | Revolvers Converted to Term |  | Total |  |
Business loans: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commercial: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Pass (a) | $ | 3,946 |  |  | $ | 3,509 |  |  | $ | 917 |  |  | $ | 1,041 |  |  | $ | 598 |  |  | $ | 1,030 |  |  | $ | 18,604 |  |  | $ | 9 |  |  | $ | 29,654 |  |  |
Criticized (b) | 75 |  |  | 274 |  |  | 81 |  |  | 69 |  |  | 45 |  |  | 78 |  |  | 632 |  |  | 1 |  |  | 1,255 |  |  |
Total commercial | 4,021 |  |  | 3,783 |  |  | 998 |  |  | 1,110 |  |  | 643 |  |  | 1,108 |  |  | 19,236 |  |  | 10 |  |  | 30,909 |  |  |
Real estate construction: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Pass (a) | 836 |  |  | 1,134 |  |  | 633 |  |  | 162 |  |  | 102 |  |  | 28 |  |  | 207 |  |  | — |  |  | 3,102 |  |  |
Criticized (b) | — |  |  | — |  |  | 3 |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | 3 |  |  |
Total real estate construction | 836 |  |  | 1,134 |  |  | 636 |  |  | 162 |  |  | 102 |  |  | 28 |  |  | 207 |  |  | — |  |  | 3,105 |  |  |
Commercial mortgage: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Pass (a) | 3,349 |  |  | 2,501 |  |  | 1,825 |  |  | 1,394 |  |  | 1,050 |  |  | 2,182 |  |  | 838 |  |  | — |  |  | 13,139 |  |  |
Criticized (b) | 7 |  |  | 5 |  |  | 7 |  |  | 32 |  |  | 31 |  |  | 75 |  |  | 10 |  |  | — |  |  | 167 |  |  |
Total commercial mortgage | 3,356 |  |  | 2,506 |  |  | 1,832 |  |  | 1,426 |  |  | 1,081 |  |  | 2,257 |  |  | 848 |  |  | — |  |  | 13,306 |  |  |
Lease financing |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Pass (a) | 316 |  |  | 140 |  |  | 64 |  |  | 47 |  |  | 37 |  |  | 130 |  |  | — |  |  | — |  |  | 734 |  |  |
Criticized (b) | 10 |  |  | — |  |  | 2 |  |  | 8 |  |  | 5 |  |  | 1 |  |  | — |  |  | — |  |  | 26 |  |  |
Total lease financing | 326 |  |  | 140 |  |  | 66 |  |  | 55 |  |  | 42 |  |  | 131 |  |  | — |  |  | — |  |  | 760 |  |  |
International |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Pass (a) | 317 |  |  | 161 |  |  | 55 |  |  | 88 |  |  | 19 |  |  | 14 |  |  | 498 |  |  | — |  |  | 1,152 |  |  |
Criticized (b) | 12 |  |  | — |  |  | 3 |  |  | — |  |  | 3 |  |  | 10 |  |  | 17 |  |  | — |  |  | 45 |  |  |
Total international | 329 |  |  | 161 |  |  | 58 |  |  | 88 |  |  | 22 |  |  | 24 |  |  | 515 |  |  | — |  |  | 1,197 |  |  |
Total business loans | 8,868 |  |  | 7,724 |  |  | 3,590 |  |  | 2,841 |  |  | 1,890 |  |  | 3,548 |  |  | 20,806 |  |  | 10 |  |  | 49,277 |  |  |
Retail loans: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Residential mortgage |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Pass (a) | 327 |  |  | 398 |  |  | 480 |  |  | 133 |  |  | 68 |  |  | 355 |  |  | — |  |  | — |  |  | 1,761 |  |  |
Criticized (b) | 4 |  |  | — |  |  | — |  |  | 9 |  |  | 1 |  |  | 39 |  |  | — |  |  | — |  |  | 53 |  |  |
Total residential mortgage | 331 |  |  | 398 |  |  | 480 |  |  | 142 |  |  | 69 |  |  | 394 |  |  | — |  |  | — |  |  | 1,814 |  |  |
Consumer: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Home equity |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Pass (a) | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | 9 |  |  | 1,708 |  |  | 40 |  |  | 1,757 |  |  |
Criticized (b) | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | 17 |  |  | 2 |  |  | 19 |  |  |
Total home equity | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | 9 |  |  | 1,725 |  |  | 42 |  |  | 1,776 |  |  |
Other consumer |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Pass (a) | 69 |  |  | 38 |  |  | 50 |  |  | 8 |  |  | 1 |  |  | 10 |  |  | 355 |  |  | — |  |  | 531 |  |  |
Criticized (b) | — |  |  | — |  |  | — |  |  | 1 |  |  | — |  |  | — |  |  | 3 |  |  | — |  |  | 4 |  |  |
Total other consumer | 69 |  |  | 38 |  |  | 50 |  |  | 9 |  |  | 1 |  |  | 10 |  |  | 358 |  |  | — |  |  | 535 |  |  |
Total consumer | 69 |  |  | 38 |  |  | 50 |  |  | 9 |  |  | 1 |  |  | 19 |  |  | 2,083 |  |  | 42 |  |  | 2,311 |  |  |
Total retail loans | 400 |  |  | 436 |  |  | 530 |  |  | 151 |  |  | 70 |  |  | 413 |  |  | 2,083 |  |  | 42 |  |  | 4,125 |  |  |
Total loans | $ | 9,268 |  |  | $ | 8,160 |  |  | $ | 4,120 |  |  | $ | 2,992 |  |  | $ | 1,960 |  |  | $ | 3,961 |  |  | $ | 22,889 |  |  | $ | 52 |  |  | $ | 53,402 |  |  |
(a)Includes all loans not included in the categories of special mention, substandard or nonaccrual. (b)Includes loans with an internal rating of special mention, substandard loans for which the accrual of interest has not been discontinued and nonaccrual loans. Special mention loans have potential credit weaknesses that deserve management’s close attention, such as loans to borrowers who may be experiencing financial difficulties that may result in deterioration of repayment prospects from the borrower at some future date. Accruing substandard loans have a well-defined weakness, or weaknesses, such as loans to borrowers who may be experiencing losses from operations or inadequate liquidity of a degree and duration that jeopardizes the orderly repayment of the loan. Substandard loans are also distinguished by the distinct possibility of loss in the future if these weaknesses are not corrected. Nonaccrual loans are loans for which the accrual of interest has been discontinued. For further information regarding nonaccrual loans, refer to the Nonperforming Assets subheading in Note 1 - Basis of Presentation and Accounting Policies on page F-49 in the Corporation's 2022 Annual Report. These categories are generally consistent with the "special mention" and "substandard" categories as defined by regulatory authorities. A minority of nonaccrual loans are consistent with the "doubtful" category. Loan interest receivable totaled $296 million and $261 million at March 31, 2023 and December 31, 2022, respectively, and was included in accrued income and other assets on the Consolidated Balance Sheets. Allowance for Credit Losses The following table details the changes in the allowance for credit losses.
| 2023 |  | 2022
(in millions) | Business Loans |  | Retail Loans |  | Total |  | Business Loans |  | Retail Loans |  | Total
Three Months Ended March 31 |  |  |  |  |  |  |  |  |  |  |
Balance at beginning of period: |  |  |  |  |  |  |  |  |  |  |
Allowance for loan losses | $ | 541 |  |  | $ | 69 |  |  | $ | 610 |  |  | $ | 531 |  |  | $ | 57 |  |  | $ | 588 |
Allowance for credit losses on lending-related commitments | 40 |  |  | 11 |  |  | 51 |  |  | 24 |  |  | 6 |  |  | 30 |
Allowance for credit losses | 581 |  |  | 80 |  |  | 661 |  |  | 555 |  |  | 63 |  |  | 618 |
Loan charge-offs | (11) |  |  | (1) |  |  | (12) |  |  | (17) |  |  | (1) |  |  | (18) |
Recoveries on loans previously charged-off | 13 |  |  | 1 |  |  | 14 |  |  | 9 |  |  | 1 |  |  | 10 |
Net loan recoveries (charge-offs) | 2 |  |  | — |  |  | 2 |  |  | (8) |  |  | — |  |  | (8) |
Provision for credit losses: |  |  |  |  |  |  |  |  |  |  |
Provision for loan losses | 27 |  |  | 2 |  |  | 29 |  |  | (30) |  |  | 4 |  |  | (26) |
Provision for credit losses on lending-related commitments | (1) |  |  | 2 |  |  | 1 |  |  | 9 |  |  | 6 |  |  | 15 |
Provision for credit losses | 26 |  |  | 4 |  |  | 30 |  |  | (21) |  |  | 10 |  |  | (11) |
Balance at end of period: |  |  |  |  |  |  |  |  |  |  |
Allowance for loan losses | 570 |  |  | 71 |  |  | 641 |  |  | 493 |  |  | 61 |  |  | 554 |
Allowance for credit losses on lending-related commitments | 39 |  |  | 13 |  |  | 52 |  |  | 33 |  |  | 12 |  |  | 45 |
Allowance for credit losses | $ | 609 |  |  | $ | 84 |  |  | $ | 693 |  |  | $ | 526 |  |  | $ | 73 |  |  | $ | 599 |
Allowance for loan losses as a percentage of total loans | 1.12 | % |  | 1.71 | % |  | 1.17 | % |  | 1.08 | % |  | 1.61 | % |  | 1.12 | %
Allowance for credit losses as a percentage of total loans | 1.20 |  |  | 2.04 |  |  | 1.26 |  |  | 1.15 |  |  | 1.92 |  |  | 1.21 |
Nonaccrual Loans The following table presents additional information regarding nonaccrual loans. Interest income of $4 million was recognized on nonaccrual loans for the three months ended March 31, 2023, compared to $2 million at March 31, 2022.
(in millions) | Nonaccrual Loans with No Related Allowance |  | Nonaccrual Loans with Related Allowance |  | Total Nonaccrual Loans
March 31, 2023 |  |  |  |  |
Business loans: |  |  |  |  |
Commercial | $ | 79 |  |  | $ | 55 |  |  | $ | 134 |
Real estate construction: |  |  |  |  |
Other business lines (a) | — |  |  | 3 |  |  | 3 |
Commercial mortgage: |  |  |  |  |
Commercial Real Estate business line (b) | — |  |  | 1 |  |  | 1 |
Other business lines (a) | 2 |  |  | 21 |  |  | 23 |
Total commercial mortgage | 2 |  |  | 22 |  |  | 24 |
International | 3 |  |  | — |  |  | 3 |
Total business loans | 84 |  |  | 80 |  |  | 164 |
Retail loans: |  |  |  |  |
Residential mortgage | 36 |  |  | 3 |  |  | 39 |
Consumer: |  |  |  |  |
Home equity | 18 |  |  | — |  |  | 18 |
Total retail loans | 54 |  |  | 3 |  |  | 57 |
Total nonaccrual loans | $ | 138 |  |  | $ | 83 |  |  | $ | 221 |
December 31, 2022 |  |  |  |  |
Business loans: |  |  |  |  |
Commercial | $ | 64 |  |  | $ | 78 |  |  | $ | 142 |
Real estate construction: |  |  |  |  |
Other business lines (a) | — |  |  | 3 |  |  | 3 |
Commercial mortgage: |  |  |  |  |
Commercial Real Estate business line (b) | — |  |  | 1 |  |  | 1 |
Other business lines (a) | 4 |  |  | 18 |  |  | 22 |
Total commercial mortgage | 4 |  |  | 19 |  |  | 23 |
International | 3 |  |  | — |  |  | 3 |
Total business loans | 71 |  |  | 100 |  |  | 171 |
Retail loans: |  |  |  |  |
Residential mortgage | 53 |  |  | — |  |  | 53 |
Consumer: |  |  |  |  |
Home equity | 15 |  |  | — |  |  | 15 |
Other consumer | 1 |  |  | — |  |  | 1 |
Total consumer | 16 |  |  | — |  |  | 16 |
Total retail loans | 69 |  |  | — |  |  | 69 |
Total nonaccrual loans | $ | 140 |  |  | $ | 100 |  |  | $ | 240 |
(a)Primarily loans secured by owner-occupied real estate. (b)Primarily loans to real estate developers. Foreclosed Properties Foreclosed properties were insignificant at both March 31, 2023 and December 31, 2022. Retail loans secured by residential real estate properties in process of foreclosure included in nonaccrual loans were insignificant at both March 31, 2023 and December 31, 2022. Loan Modifications Made to Borrowers Experiencing Financial Difficulty Effective January 1, 2023, the Corporation adopted the provisions of ASU 2022-02, which eliminated the accounting for TDRs while expanding loan modification and vintage disclosure requirements. Please see Note 1 to the consolidated financial statements for further information. The following table displays the amortized cost basis at March 31, 2023 of loan modifications made to borrowers experiencing financial difficulty that were restructured during the three months ended March 31, 2023 by type of modification.
(in millions) | Term Extension (a) |  |  |  |  |  | Other (b) |  | Total |  | Percent of Total Class
For the Three Months Ended March 31, 2023 |  |  |  |  |  |  |  |  |  |  |
Business loans: |  |  |  |  |  |  |  |  |  |  |
Commercial | $ | 7 |  |  |  |  |  |  | $ | 1 |  |  | $ | 8 |  |  | 0.02 | %
Commercial mortgage: |  |  |  |  |  |  |  |  |  |  |
Commercial Real Estate business line (c) | 1 |  |  |  |  |  |  | 5 |  |  | 6 |  |  | 0.11 |
Other business lines (d) | 1 |  |  |  |  |  |  | — |  |  | 1 |  |  | 0.02 |
Total commercial mortgage | 2 |  |  |  |  |  |  | 5 |  |  | 7 |  |  | 0.05 |
Total business loans | $ | 9 |  |  |  |  |  |  | $ | 6 |  |  | $ | 15 |  |  | 0.03 | %
Retail loans: |  |  |  |  |  |  |  |  |  |  |
Consumer: |  |  |  |  |  |  |  |  |  |  |
Other consumer | $ | 1 |  |  |  |  |  |  | $ | — |  |  | $ | 1 |  |  | 0.10 |
Total consumer | 1 |  |  |  |  |  |  | — |  |  | 1 |  |  | 0.04 |
Total retail loans | 1 |  |  |  |  |  |  | — |  |  | 1 |  |  | 0.02 |
Total loans | $ | 10 |  |  |  |  |  |  | $ | 6 |  |  | $ | 16 |  |  | 0.03 | %
(a)Represents loan balances where terms were extended by more than an insignificant time period, typically more than 180 days, at or above contractual interest rates. (b)Relates to FDMs where more than one type of modification was made. For the three months ended March 31, 2023, this primarily related to modifications where the interest rate was reduced and the term was extended. (c)Primarily loans to real estate developers. (d)Primarily loans secured by owner-occupied real estate. No modifications involved forgiveness of principal. There were no commitments to lend additional funds to borrowers experiencing financial difficulty whose terms have been restructured at March 31, 2023. The following table summarizes the financial impacts of loan modifications made to specific loans during the three months ended March 31, 2023.
| Weighted-Average Interest Rate Reduction |  | Weighted-Average Term Extension (in months)
For the Three Months Ended March 31, 2023 |  |  |
Business loans: |  |  |
Commercial | (0.25) | % |  | 17.9
Commercial mortgage: |  |  |
Commercial Real Estate business line (a) | (0.27) |  |  | 21.2
Other business lines (b) | — |  |  | 7.4
Total commercial mortgage | (0.27) |  |  | 18.4
Total business loans | (0.27) | % |  | 18.2
Retail loans: |  |  |
Consumer: |  |  |
Other consumer | — |  |  | 10.0
Total consumer | — |  |  | 10.0
Total retail loans | — |  |  | 10.0
Total loans | (0.27) | % |  | 17.9 |
(a)Primarily loans to real estate developers. (b)Primarily loans secured by owner-occupied real estate. On an ongoing basis, the Corporation monitors the performance of modified loans related to their restructured terms. Loans restructured during the three months ended March 31, 2023 were current under modified terms at March 31, 2023. Nonperforming restructured loans are classified as nonaccrual loans and are individually evaluated in the allowance for loan losses. For restructured loans, a subsequent payment default is defined in terms of delinquency, when a principal or interest payment is 90 days past due or classified into nonaccrual status during the reporting period. Of the loans restructured during the three-month period ended March 31, 2023 (since adoption of ASU 2022-02), there were no subsequent defaults. Troubled Debt Restructurings Prior to the Adoption of ASU 2022-02 The following table details the amortized cost basis at March 31, 2022 of loans considered to be TDRs that were restructured during the three months ended March 31, 2022, by type of modification. In cases of loans with more than one type of modification, the loans were categorized based on the most significant modification.
(in millions) | Principal Deferrals (a)
Three Months Ended March 31, 2022 |
Commercial | $ | 21 |
Consumer: |
Home equity (b) | 2 |
Total loans | $ | 23 |
(a)Primarily represents loan balances where terms were extended by more than an insignificant time period, typically more than 180 days, at or above contractual interest rates. Also includes commercial loans restructured in bankruptcy. (b)Includes bankruptcy loans for which the court has discharged the borrower's obligation and the borrower has not reaffirmed the debt. The Corporation charged interest on principal balances outstanding during deferral periods. Additionally, none of the modifications involved forgiveness of principal. There were no significant commitments to lend additional funds to borrowers whose terms had been modified in TDRs at December 31, 2022. For principal deferrals, incremental deterioration in the credit quality of the loan, represented by a downgrade in the risk rating of the loan, for example, due to missed interest payments or a reduction of collateral value, was considered a subsequent default. For interest rate reductions, a subsequent payment default is defined in terms of delinquency, when a principal or interest payment is 90 days past due. Of the TDRs modified during the twelve-month period ended March 31, 2022, there were no subsequent defaults of principal deferrals or interest rate reductions in the three-month period ended March 31, 2022.

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