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Loans, Leases, and Allowance For Credit Losses (Tables)
 12 Months Ended
Dec. 31, 2020
Receivables [Abstract]  
Summary of Major Portfolio Segment and Specific Loan Class
Loans and leases are summarized as follows according to major portfolio segment and specific class:
December 31,
(In millions)20202019
Loans held for sale$81 $129 
Commercial:
Commercial and industrial$13,444 $14,760 
PPP5,572 — 
Leasing320 334 
Owner-occupied8,185 7,901 
Municipal2,951 2,393 
Total commercial30,472 25,388 
Commercial real estate:
Construction and land development2,345 2,211 
Term9,759 9,344 
Total commercial real estate12,104 11,555 
Consumer:
Home equity credit line2,745 2,917 
1-4 family residential6,969 7,568 
Construction and other consumer real estate630 624 
Bankcard and other revolving plans432 502 
Other124 155 
Total consumer10,900 11,766 
Total loans and leases
$53,476 $48,709 
Summary of Changes in the Allowance for Credit Losses
Changes in the ACL are summarized as follows:
December 31, 2020
(In millions)
 
CommercialCommercial
real estate		ConsumerTotal
Allowance for loan losses
Balance at December 31, 2019$341 $101 $53 $495 
Adjustment for change in accounting standard(59)(32)93 2 
Balance at beginning of year (January 1, 2020)282 69 146 497 
Provision for loan losses281 103 1 385 
Gross loan and lease charge-offs113 114 128 
Recoveries14 — 9 23 
Net loan and lease charge-offs (recoveries)99 1 5 105 
Balance at end of year$464 $171 $142 $777 
Reserve for unfunded lending commitments
Balance at December 31, 2019$39 $20 $— $59 
Adjustment for change in accounting standard(28)(8)6 (30)
Balance at beginning of year (January 1, 2020)11 12 6 29 
Provision for unfunded lending commitments19 8 2 29 
Balance at end of year$30 $20 $8 $58 
Total allowance for credit losses
Allowance for loan losses$464 $171 $142 $777 
Reserve for unfunded lending commitments30 20 8 58 
Total allowance for credit losses$494 $191 $150 $835 
December 31, 2019
(In millions)CommercialCommercial
real estate		ConsumerTotal
Allowance for loan losses
Balance at beginning of year$331 $110 $54 $495 
Provision for loan losses42 (11)6 37 
Gross loan and lease charge-offs57 4 17 78 
Recoveries25 6 10 41 
Net loan and lease charge-offs (recoveries)32 (2)7 37 
Balance at end of year$341 $101 $53 $495 
Reserve for unfunded lending commitments
Balance at beginning of year$40 $17 $— $57 
Provision for unfunded lending commitments(1)3 — 2 
Balance at end of year$39 $20 $— $59 
Total allowance for credit losses
Allowance for loan losses$341 $101 $53 $495 
Reserve for unfunded lending commitments39 20 — 59 
Total allowance for credit losses$380 $121 $53 $554 
Summary of Nonaccrual Loans
The amortized cost basis of loans on nonaccrual status is summarized as follows:
December 31, 2020
Amortized cost basisTotal amortized cost basis
(In millions)with no allowancewith allowanceRelated allowance
Commercial:
Commercial and industrial$73 $67 $140 $22 
Leasing— — — — 
Owner-occupied38 38 76 — 
Municipal— — — 4 
Total commercial111 105 216 26 
Commercial real estate:
Construction and land development— — — — 
Term12 19 31 3 
Total commercial real estate12 19 31 3 
Consumer:
Home equity credit line2 14 16 3 
1-4 family residential14 89 103 9 
Construction and other consumer real estate— — — — 
Bankcard and other revolving plans— 1 1 1 
Other— — — — 
Total consumer loans16 104 120 13 
Total$139 $228 $367 $42 
The amount of accrued interest receivables written off by reversing interest income during the period is summarized by loan portfolio segment as follows:
(In millions)Year Ended December 31, 2020
Commercial$16 
Commercial real estate2 
Consumer1 
Total$19 
Summary of Past Due Loans (Accruing and Nonaccruing)
Past-due loans (accruing and nonaccruing) are summarized as follows:
December 31, 2020
(In millions)Current30-89 days
past due		90+ days
past due		Total
past due		Total
loans		Accruing
loans
90+ days
past due
Nonaccrual
loans
that are
current1
Commercial:
Commercial and industrial$13,388 $26 $30 $56 $13,444 $2 $109 
PPP5,572 — — — 5,572 — — 
Leasing320 — — — 320 — 1 
Owner-occupied8,129 34 22 56 8,185 — 48 
Municipal2,951 — — — 2,951 — — 
Total commercial30,360 60 52 112 30,472 2 158 
Commercial real estate:
Construction and land development
2,341 — 4 4 2,345 4 — 
Term9,692 57 10 67 9,759 4 13 
Total commercial real estate12,033 57 14 71 12,104 8 13 
Consumer:
Home equity credit line2,733 8 4 12 2,745 — 9 
1-4 family residential6,891 12 66 78 6,969 — 33 
Construction and other consumer real estate
630 — — — 630 — 
Bankcard and other revolving plans
428 2 2 4 432 2 1 
Other123 1 — 1 124 — — 
Total consumer loans10,805 23 72 95 10,900 2 43 
Total$53,198 $140 $138 $278 $53,476 $12 $214 
December 31, 2019
(In millions)Current30-89 days
past due		90+ days
past due		Total
past due		Total
loans		Accruing
loans
90+ days
past due
Nonaccrual
loans
that are
current1
Commercial:
Commercial and industrial$14,665 $57 $38 $95 $14,760 $8 $54 
Leasing334 — — — 334 1 — 
Owner-occupied7,862 20 19 39 7,901 — 44 
Municipal2,393 — — — 2,393 — — 
Total commercial25,254 77 57 134 25,388 9 98 
Commercial real estate:
Construction and land development
2,206 5 — 5 2,211 — 1 
Term9,333 8 3 11 9,344 — 10 
Total commercial real estate11,539 13 3 16 11,555 — 11 
Consumer:
Home equity credit line2,908 6 3 9 2,917 — 7 
1-4 family residential7,532 12 24 36 7,568 — 13 
Construction and other consumer real estate
624 — — — 624 — — 
Bankcard and other revolving plans
499 2 1 3 502 1 — 
Other154 1 — 1 155 — — 
Total consumer loans11,717 21 28 49 11,766 1 20 
Total$48,510 $111 $88 $199 $48,709 $10 $129 
1 Represents nonaccrual loans that are not past due more than 30 days; however, full payment of principal and interest is still not expected.
Summary of Outstanding Loan Balances (Accruing and Nonaccruing) Categorized by Credit Quality Indicators The amortized cost basis of loans and leases categorized by year of origination and by credit quality classifications as monitored by management are summarized as follows:
December 31, 2020
Term LoansRevolving loans amortized cost basisRevolving loans converted to term loans amortized cost basis
Amortized cost basis by year of origination
(In millions)20202019201820172016PriorTotal
loans
Commercial:
Commercial and industrial
Pass$2,585 $2,743 $1,903 $829 $296 $228 $3,298 $109 $11,991 
Special Mention79 152 183 98 4 43 110 1 670 
Accruing Substandard123 157 129 44 26 17 141 6 643 
Nonaccrual57 2 10 8 2 15 36 10 140 
Total commercial and industrial2,844 3,054 2,225 979 328 303 3,585 126 13,444 
PPP
Pass5,572 — — — — — — — 5,572 
Total PPP5,572 — — — — — — — 5,572 
Leasing
Pass87 121 44 34 14 5 — — 305 
Special Mention1 — 2 1 — 6 — — 10 
Accruing Substandard2 1 1 1 — — — — 5 
Nonaccrual— — — — — — — — — 
Total leasing90 122 47 36 14 11 — — 320 
Owner-occupied
Pass1,588 1,205 1,167 895 585 1,806 161 11 7,418 
Special Mention72 65 60 60 51 41 9 3 361 
Accruing Substandard28 64 61 37 35 98 6 1 330 
Nonaccrual8 11 15 11 6 23 2 — 76 
Total owner-occupied1,696 1,345 1,303 1,003 677 1,968 178 15 8,185 
Municipal
Pass1,031 827 359 419 68 227 3 — 2,934 
Special Mention— — — — — 8 — — 8 
Accruing Substandard— — — — — 9 — — 9 
Nonaccrual— — — — — — — — — 
Total municipal1,031 827 359 419 68 244 3 — 2,951 
Total commercial11,233 5,348 3,934 2,437 1,087 2,526 3,766 141 30,472 
Commercial real estate:
Construction and land development
Pass558 933 267 41 1 6 423 3 2,232 
Special Mention24 43 11 — — — 5 — 83 
Accruing Substandard— 30 — — — — — — 30 
Nonaccrual— — — — — — — — — 
Total construction and land development582 1,006 278 41 1 6 428 3 2,345 
Term
Pass2,524 1,858 1,639 761 778 1,291 73 20 8,944 
Special Mention110 89 177 42 23 85 — 5 531 
Accruing Substandard41 34 96 30 18 34 — — 253 
Nonaccrual3 5 — 2 1 20 — — 31 
Total term2,678 1,986 1,912 835 820 1,430 73 25 9,759 
Total commercial real estate3,260 2,992 2,190 876 821 1,436 501 28 12,104 
December 31, 2020
Term LoansRevolving loans amortized cost basisRevolving loans converted to term loans amortized cost basis
Amortized cost basis by year of origination
(In millions)20202019201820172016PriorTotal
loans
Consumer:
Home equity credit line
Pass— — — — — — 2,606 115 2,721 
Special Mention— — — — — — 2 — 2 
Accruing Substandard— — — — — — 6 — 6 
Nonaccrual— — — — — — 11 5 16 
Total home equity credit line— — — — — — 2,625 120 2,745 
1-4 family residential
Pass1,185 1,017 833 1,081 1,174 1,570 — — 6,860 
Special Mention— — — — — 2 — — 2 
Accruing Substandard— — 1 — 2 1 — — 4 
Nonaccrual2 12 7 19 15 48 — — 103 
Total 1-4 family residential1,187 1,029 841 1,100 1,191 1,621 — — 6,969 
Construction and other consumer real estate
Pass200 296 106 16 1 11 — — 630 
Special Mention— — — — — — — — — 
Accruing Substandard— — — — — — — — — 
Nonaccrual— — — — — — — — — 
Total construction and other consumer real estate200 296 106 16 1 11 — — 630 
Bankcard and other revolving plans
Pass— — — — — — 426 2 428 
Special Mention— — — — — — — — — 
Accruing Substandard— — — — — — 3 — 3 
Nonaccrual— — — — — — — 1 1 
Total bankcard and other revolving plans— — — — — — 429 3 432 
Other consumer
Pass51 35 22 10 4 2 — — 124 
Special Mention— — — — — — — — — 
Accruing Substandard— — — — — — — — — 
Nonaccrual— — — — — — — — — 
Total other consumer51 35 22 10 4 2 — — 124 
Total consumer1,438 1,360 969 1,126 1,196 1,634 3,054 123 10,900 
Total loans$15,931 $9,700 $7,093 $4,439 $3,104 $5,596 $7,321 $292 $53,476 
Summary of TDRs (Accruing and Nonaccruing) Categorized by Loan Class and Modification Type
Selected information on TDRs at year-end that includes the recorded investment on an accruing and nonaccruing basis by loan class and modification type is summarized in the following schedules:
December 31, 2020
Recorded investment resulting from the following modification types: 
(In millions)Interest
rate below
market		Maturity
or term
extension		Principal
forgiveness		Payment
deferral
Other1
Multiple
modification
types2
Total
Accruing
Commercial:
Commercial and industrial$— $— $— $— $3 $4 $7 
Owner-occupied5 1 — 4 4 8 22 
Total commercial5 1 — 4 7 12 29 
Commercial real estate:
Construction and land development— — — — — — — 
Term1 — — 16 94 23 134 
Total commercial real estate1 — — 16 94 23 134 
Consumer:
Home equity credit line— 1 7 — — 2 10 
1-4 family residential4 1 3 — 2 15 25 
Construction and other consumer real estate
— — — — — — — 
Total consumer loans4 2 10 — 2 17 35 
Total accruing$10 $3 $10 $20 $103 $52 $198 
Nonaccruing
Commercial:
Commercial and industrial$— $— $— $3 $10 $52 $65 
Owner-occupied5 — — 3 — 10 18 
Municipal— — — — — — — 
Total commercial5 — — 6 10 62 83 
Commercial real estate:
Construction and land development— — — — — — — 
Term2 — — 13 3 2 20 
Total commercial real estate2 — — 13 3 2 20 
Consumer:
Home equity credit line— — 2 — — — 2 
1-4 family residential1 1 — — — 6 8 
Construction and other consumer real estate
— — — — — — — 
Total consumer loans1 1 2 — — 6 10 
Total nonaccruing8 1 2 19 13 70 113 
Total$18 $4 $12 $39 $116 $122 $311 
1 Includes TDRs that resulted from other modification types including, but not limited to, a legal judgment awarded on different terms, a bankruptcy plan confirmed on different terms, a settlement that includes the delivery of collateral in exchange for debt reduction, etc.
2 Includes TDRs that resulted from a combination of any of the previous modification types.
December 31, 2019
Recorded investment resulting from the following modification types: 
(In millions)Interest
rate below
market		Maturity
or term
extension		Principal
forgiveness		Payment
deferral
Other1
Multiple
modification
types2
Total
Accruing
Commercial:
Commercial and industrial$1 $2 $— $— $8 $5 $16 
Owner-occupied3 1 — — 4 7 15 
Total commercial4 3 — — 12 12 31 
Commercial real estate:
Construction and land development— — — — — — — 
Term2 — — 1 — 3 6 
Total commercial real estate2 — — 1 — 3 6 
Consumer:
Home equity credit line— 2 7 — — 2 11 
1-4 family residential1 1 4 — 1 22 29 
Construction and other consumer real estate
— 1 — — — — 1 
Total consumer loans1 4 11 — 1 24 41 
Total accruing$7 $7 $11 $1 $13 $39 $78 
Nonaccruing
Commercial:
Commercial and industrial$— $4 $— $20 $4 $22 $50 
Owner-occupied5 — — — 1 4 10 
Municipal— — — — — — — 
Total commercial5 4 — 20 5 26 60 
Commercial real estate:
Construction and land development— — — — — — — 
Term1 — — — 3 3 7 
Total commercial real estate1 — — — 3 3 7 
Consumer:
Home equity credit line— — 2 — — — 2 
1-4 family residential— — 1 — 1 4 6 
Construction and other consumer real estate
— — — — — — — 
Total consumer loans— — 3 — 1 4 8 
Total nonaccruing6 4 3 20 9 33 75 
Total$13 $11 $14 $21 $22 $72 $153 
1 Includes TDRs that resulted from other modification types including, but not limited to, a legal judgment awarded on different terms, a bankruptcy plan confirmed on different terms, a settlement that includes the delivery of collateral in exchange for debt reduction, etc.
2 Includes TDRs that resulted from a combination of any of the previous modification types.
The recorded investment of accruing and nonaccruing TDRs that had a payment default during the period listed below (and are still in default at year-end) and are within 12 months or less of being modified as TDRs is as follows:
(In millions)December 31, 2020December 31, 2019
AccruingNonaccruingTotalAccruingNonaccruingTotal
Commercial:
Commercial and industrial$— $2 $2 $— $— $— 
Owner-occupied— — — — 1 1 
Total commercial— 2 2 — 1 1 
Consumer:
1-4 family residential— 1 1 — — — 
Total consumer loans— 1 1 — — — 
Total$— $3 $3 $— $1 $1 
Note: Total loans modified as TDRs during the 12 months previous to December 31, 2020, and 2019 were $228 million and $40 million, respectively.
Summary of Collateral-Dependent Loans
Selected information on loans for which the repayment is expected to be provided substantially through the operation or sale of the underlying collateral and the borrower is experiencing financial difficulties, including the type of collateral and the extent to which the collateral secures the loans, is summarized as follows:
December 31, 2020
(In millions)Amortized CostMajor Types of Collateral
Weighted Average LTV1
Commercial:
Commercial and industrial$20 Single family residential, Agriculture55%
Owner-occupied10 Office Building47%
Commercial real estate:
Term12 Multi-family, Hotel/Motel, Retail58%
Consumer:
Home equity credit line3 Single family residential34%
1-4 family residential2 Single family residential60%
Total$47 
1 The fair value is based on the most recent appraisal or other collateral evaluation.