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Fair Value of Assets and Liabilities - Summary Of Book Value And Estimated Fair Value Of Financial Instruments (Details) - USD ($) $ in Millions | Sep. 30, 2022 | Dec. 31, 2021
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Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Net loans and leases | $ 56,690 | $ 54,189
Short-term financial assets: |  |
Interest-bearing deposits with banks | 3,241 | 14,907
Securities Purchased under Agreements to Resell | 492 | 488
Trading securities | 1,421 | 1,601
Loans held for sale: | 680 | 1,172
Securities available-for-sale | 8,718 | 8,707
Securities held to maturity | 1,385 | 712
Derivative assets | 311 | 323
Other Assets Financial Instruments [Abstract] |  |
Total assets | 80,299 | 89,092
Liabilities: |  |
Trading liabilities | 383 | 426
Short Term Financial Liabilities [Abstract] |  |
Securities sold under agreements to repurchase | 658 | 1,247
Long-Term Debt, Unclassified [Abstract] |  |
Other long term borrowings | 1,597 | 1,590
Derivative liabilities | 1,027 | 103
Total liabilities | 72,016 | 80,598
Fair Value, Inputs, Level 3 | FHLB-Cincinnati Stock |  |
Long-Term Debt, Unclassified [Abstract] |  |
Restricted investments | 26 | 29
Fair Value, Inputs, Level 3 | FRB Stock |  |
Long-Term Debt, Unclassified [Abstract] |  |
Restricted investments | 203 | 203
Reported Value Measurement |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Net loans and leases | 56,690 | 54,189
Short-term financial assets: |  |
Interest-bearing deposits with banks | 3,241 | 14,907
Federal funds sold | 198 | 153
Securities Purchased under Agreements to Resell | 492 | 488
Total short-term financial assets | 3,931 | 15,548
Trading securities | 1,421 | 1,601
Loans held for sale: | 680 | 1,172
Securities available-for-sale | 8,718 | 8,707
Securities held to maturity | 1,385 | 712
Derivative assets | 318 | 324
Other Assets Financial Instruments [Abstract] |  |
Tax credit investments | 530 | 456
Deferred compensation mutual funds | 106 | 125
Equity, mutual funds, and other | 251 | 257
Total other assets | 887 | 838
Total assets | 74,030 | 83,091
Liabilities: |  |
Defined maturity deposits | 2,671 | 3,500
Trading liabilities | 383 | 426
Short Term Financial Liabilities [Abstract] |  |
Federal funds purchased | 496 | 775
Securities sold under agreements to repurchase | 657 | 1,247
Other short-term borrowings | 263 | 102
Total short-term financial liabilities | 1,416 | 2,124
Long-Term Debt, Unclassified [Abstract] |  |
Real estate investment trust-preferred | 46 | 46
Term borrowings—new market tax credit investment | 66 | 59
Secured borrowings | 4 | 6
Junior subordinated debentures | 148 | 148
Other long term borrowings | 1,333 | 1,331
Total term borrowings | 1,597 | 1,590
Derivative liabilities | 1,049 | 128
Total liabilities | 7,116 | 7,768
Reported Value Measurement | Commercial, financial and industrial |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Net loans and leases | 31,325 | 30,734
Reported Value Measurement | Commercial Real Estate |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Net loans and leases | 12,873 | 11,955
Reported Value Measurement | Consumer Real Estate |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Net loans and leases | 11,671 | 10,609
Reported Value Measurement | Credit Card And Other Portfolio Segment [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Net loans and leases | 821 | 891
Reported Value Measurement | Mortgage loans (elected fair value) |  |
Short-term financial assets: |  |
Loans held for sale: | 89 | 258
Reported Value Measurement | USDA & SBA loans - LOCOM |  |
Short-term financial assets: |  |
Loans held for sale: | 557 | 853
Reported Value Measurement | Other loans - LOCOM |  |
Short-term financial assets: |  |
Loans held for sale: |  | 24
Reported Value Measurement | Mortgage loans - LOCOM |  |
Short-term financial assets: |  |
Loans held for sale: | 34 | 37
Estimate of Fair Value Measurement |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Net loans and leases | 56,194 | 55,023
Short-term financial assets: |  |
Interest-bearing deposits with banks | 3,241 | 14,907
Federal funds sold | 198 | 153
Securities Purchased under Agreements to Resell | 492 | 488
Total short-term financial assets | 3,931 | 15,548
Trading securities | 1,421 | 1,601
Loans held for sale: | 682 | 1,175
Securities available-for-sale | 8,718 | 8,707
Securities held to maturity | 1,222 | 705
Derivative assets | 318 | 324
Other Assets Financial Instruments [Abstract] |  |
Tax credit investments | 530 | 450
Deferred compensation mutual funds | 106 | 125
Equity, mutual funds, and other | 251 | 257
Total other assets | 887 | 832
Total assets | 73,373 | 83,915
Liabilities: |  |
Defined maturity deposits | 2,668 | 3,524
Trading liabilities | 383 | 426
Short Term Financial Liabilities [Abstract] |  |
Federal funds purchased | 496 | 775
Securities sold under agreements to repurchase | 657 | 1,247
Other short-term borrowings | 263 | 102
Total short-term financial liabilities | 1,416 | 2,124
Long-Term Debt, Unclassified [Abstract] |  |
Real estate investment trust-preferred | 47 | 47
Term borrowings—new market tax credit investment | 59 | 58
Secured borrowings | 4 | 6
Junior subordinated debentures | 150 | 150
Other long term borrowings | 1,331 | 1,452
Total term borrowings | 1,591 | 1,713
Derivative liabilities | 1,049 | 128
Total liabilities | 7,107 | 7,915
Unfunded Commitments [Abstract] |  |
Loan commitments | 1 | 1
Standby and other commitments | 7 | 6
Estimate of Fair Value Measurement | Commercial, financial and industrial |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Net loans and leases | 31,084 | 31,020
Estimate of Fair Value Measurement | Commercial Real Estate |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Net loans and leases | 12,735 | 11,986
Estimate of Fair Value Measurement | Consumer Real Estate |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Net loans and leases | 11,550 | 11,111
Estimate of Fair Value Measurement | Credit Card And Other Portfolio Segment [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Net loans and leases | 825 | 906
Estimate of Fair Value Measurement | Mortgage loans (elected fair value) |  |
Short-term financial assets: |  |
Loans held for sale: | 89 | 258
Estimate of Fair Value Measurement | USDA & SBA loans - LOCOM |  |
Short-term financial assets: |  |
Loans held for sale: | 559 | 856
Estimate of Fair Value Measurement | Other loans - LOCOM |  |
Short-term financial assets: |  |
Loans held for sale: |  | 24
Estimate of Fair Value Measurement | Mortgage loans - LOCOM |  |
Short-term financial assets: |  |
Loans held for sale: | 34 | 37
Estimate of Fair Value Measurement | Fair Value, Inputs, Level 1 |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Net loans and leases | 0 | 0
Short-term financial assets: |  |
Interest-bearing deposits with banks | 3,241 | 14,907
Federal funds sold | 0 | 0
Securities Purchased under Agreements to Resell | 0 | 0
Total short-term financial assets | 3,241 | 14,907
Trading securities | 0 | 0
Loans held for sale: | 0 | 0
Securities available-for-sale | 0 | 0
Securities held to maturity | 0 | 0
Derivative assets | 49 | 12
Other Assets Financial Instruments [Abstract] |  |
Tax credit investments | 0 | 0
Deferred compensation mutual funds | 106 | 125
Equity, mutual funds, and other | 22 | 25
Total other assets | 128 | 150
Total assets | 3,418 | 15,069
Liabilities: |  |
Defined maturity deposits | 0 | 0
Trading liabilities | 0 | 0
Short Term Financial Liabilities [Abstract] |  |
Federal funds purchased | 0 | 0
Securities sold under agreements to repurchase | 0 | 0
Other short-term borrowings | 0 | 0
Total short-term financial liabilities | 0 | 0
Long-Term Debt, Unclassified [Abstract] |  |
Real estate investment trust-preferred | 0 | 0
Term borrowings—new market tax credit investment | 0 | 0
Secured borrowings | 0 | 0
Junior subordinated debentures | 0 | 0
Other long term borrowings | 0 | 0
Total term borrowings | 0 | 0
Derivative liabilities | 39 | 11
Total liabilities | 39 | 11
Estimate of Fair Value Measurement | Fair Value, Inputs, Level 1 | Commercial, financial and industrial |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Net loans and leases | 0 | 0
Estimate of Fair Value Measurement | Fair Value, Inputs, Level 1 | Commercial Real Estate |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Net loans and leases | 0 | 0
Estimate of Fair Value Measurement | Fair Value, Inputs, Level 1 | Consumer Real Estate |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Net loans and leases | 0 | 0
Estimate of Fair Value Measurement | Fair Value, Inputs, Level 1 | Credit Card And Other Portfolio Segment [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Net loans and leases | 0 | 0
Estimate of Fair Value Measurement | Fair Value, Inputs, Level 1 | Mortgage loans (elected fair value) |  |
Short-term financial assets: |  |
Loans held for sale: | 0 | 0
Estimate of Fair Value Measurement | Fair Value, Inputs, Level 1 | USDA & SBA loans - LOCOM |  |
Short-term financial assets: |  |
Loans held for sale: | 0 | 0
Estimate of Fair Value Measurement | Fair Value, Inputs, Level 1 | Other loans - LOCOM |  |
Short-term financial assets: |  |
Loans held for sale: |  | 0
Estimate of Fair Value Measurement | Fair Value, Inputs, Level 1 | Mortgage loans - LOCOM |  |
Short-term financial assets: |  |
Loans held for sale: | 0 | 0
Estimate of Fair Value Measurement | Fair Value, Inputs, Level 2 |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Net loans and leases | 0 | 0
Short-term financial assets: |  |
Interest-bearing deposits with banks | 0 | 0
Federal funds sold | 198 | 153
Securities Purchased under Agreements to Resell | 492 | 488
Total short-term financial assets | 690 | 641
Trading securities | 1,398 | 1,563
Loans held for sale: | 628 | 1,109
Securities available-for-sale | 8,718 | 8,707
Securities held to maturity | 1,222 | 705
Derivative assets | 269 | 312
Other Assets Financial Instruments [Abstract] |  |
Tax credit investments | 0 | 0
Deferred compensation mutual funds | 0 | 0
Equity, mutual funds, and other | 0 | 0
Total other assets | 0 | 0
Total assets | 12,925 | 13,037
Liabilities: |  |
Defined maturity deposits | 2,668 | 3,524
Trading liabilities | 383 | 426
Short Term Financial Liabilities [Abstract] |  |
Federal funds purchased | 496 | 775
Securities sold under agreements to repurchase | 657 | 1,247
Other short-term borrowings | 263 | 102
Total short-term financial liabilities | 1,416 | 2,124
Long-Term Debt, Unclassified [Abstract] |  |
Real estate investment trust-preferred | 0 | 0
Term borrowings—new market tax credit investment | 0 | 0
Secured borrowings | 0 | 0
Junior subordinated debentures | 0 | 0
Other long term borrowings | 1,331 | 1,452
Total term borrowings | 1,331 | 1,452
Derivative liabilities | 990 | 94
Total liabilities | 6,788 | 7,620
Estimate of Fair Value Measurement | Fair Value, Inputs, Level 2 | Commercial, financial and industrial |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Net loans and leases | 0 | 0
Estimate of Fair Value Measurement | Fair Value, Inputs, Level 2 | Commercial Real Estate |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Net loans and leases | 0 | 0
Estimate of Fair Value Measurement | Fair Value, Inputs, Level 2 | Consumer Real Estate |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Net loans and leases | 0 | 0
Estimate of Fair Value Measurement | Fair Value, Inputs, Level 2 | Credit Card And Other Portfolio Segment [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Net loans and leases | 0 | 0
Estimate of Fair Value Measurement | Fair Value, Inputs, Level 2 | Mortgage loans (elected fair value) |  |
Short-term financial assets: |  |
Loans held for sale: | 69 | 230
Estimate of Fair Value Measurement | Fair Value, Inputs, Level 2 | USDA & SBA loans - LOCOM |  |
Short-term financial assets: |  |
Loans held for sale: | 559 | 855
Estimate of Fair Value Measurement | Fair Value, Inputs, Level 2 | Other loans - LOCOM |  |
Short-term financial assets: |  |
Loans held for sale: |  | 24
Estimate of Fair Value Measurement | Fair Value, Inputs, Level 2 | Mortgage loans - LOCOM |  |
Short-term financial assets: |  |
Loans held for sale: | 0 | 0
Estimate of Fair Value Measurement | Fair Value, Inputs, Level 3 |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Net loans and leases | 56,194 | 55,023
Short-term financial assets: |  |
Interest-bearing deposits with banks | 0 | 0
Federal funds sold | 0 | 0
Securities Purchased under Agreements to Resell | 0 | 0
Total short-term financial assets | 0 | 0
Trading securities | 23 | 38
Loans held for sale: | 54 | 66
Securities available-for-sale | 0 | 0
Securities held to maturity | 0 | 0
Derivative assets | 0 | 0
Other Assets Financial Instruments [Abstract] |  |
Tax credit investments | 530 | 450
Deferred compensation mutual funds | 0 | 0
Equity, mutual funds, and other | 229 | 232
Total other assets | 759 | 682
Total assets | 57,030 | 55,809
Liabilities: |  |
Defined maturity deposits | 0 | 0
Trading liabilities | 0 | 0
Short Term Financial Liabilities [Abstract] |  |
Federal funds purchased | 0 | 0
Securities sold under agreements to repurchase | 0 | 0
Other short-term borrowings | 0 | 0
Total short-term financial liabilities | 0 | 0
Long-Term Debt, Unclassified [Abstract] |  |
Real estate investment trust-preferred | 47 | 47
Term borrowings—new market tax credit investment | 59 | 58
Secured borrowings | 4 | 6
Junior subordinated debentures | 150 | 150
Other long term borrowings | 0 | 0
Total term borrowings | 260 | 261
Derivative liabilities | 20 | 23
Total liabilities | 280 | 284
Estimate of Fair Value Measurement | Fair Value, Inputs, Level 3 | Commercial, financial and industrial |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Net loans and leases | 31,084 | 31,020
Estimate of Fair Value Measurement | Fair Value, Inputs, Level 3 | Commercial Real Estate |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Net loans and leases | 12,735 | 11,986
Estimate of Fair Value Measurement | Fair Value, Inputs, Level 3 | Consumer Real Estate |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Net loans and leases | 11,550 | 11,111
Estimate of Fair Value Measurement | Fair Value, Inputs, Level 3 | Credit Card And Other Portfolio Segment [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Net loans and leases | 825 | 906
Estimate of Fair Value Measurement | Fair Value, Inputs, Level 3 | Mortgage loans (elected fair value) |  |
Short-term financial assets: |  |
Loans held for sale: | 20 | 28
Estimate of Fair Value Measurement | Fair Value, Inputs, Level 3 | USDA & SBA loans - LOCOM |  |
Short-term financial assets: |  |
Loans held for sale: | 0 | 1
Estimate of Fair Value Measurement | Fair Value, Inputs, Level 3 | Other loans - LOCOM |  |
Short-term financial assets: |  |
Loans held for sale: |  | 0
Estimate of Fair Value Measurement | Fair Value, Inputs, Level 3 | Mortgage loans - LOCOM |  |
Short-term financial assets: |  |
Loans held for sale: | 34 | 37
Contractual Amount |  |
Unfunded Commitments [Abstract] |  |
Loan commitments | 26,747 | 24,229
Standby and other commitments | $ 716 | $ 810

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- Definition Defined maturity deposits include all certificates of deposit and other time deposits. The fair value is estimated by discounting future cash flows to their present value. Future cash flows are discounted by using the current market rates of similar instruments applicable to the remaining maturity. + References No definition available. + Details
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- Definition Short-term financial assets include federal funds sold, securities purchased under agreements to resell, and interest bearing deposits with other financial institutions. + References No definition available. + Details
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- Definition Short-term financial liabilities include federal funds purchased, securities sold under agreements to repurchase, and other short-term borrowings. The carrying amount is a reasonable estimate of fair value because of the relatively short time between the origination of the instrument and its expected realization. Other short-term borrowings includes a liability associated with transfers of mortgage servicing rights that did not qualify for sale accounting. This liability is accounted for at elected fair value, which is measured consistent with the related MSR. + References No definition available. + Details
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- Definition Standby commitments may be provided to customers in order to guarantee payment between a customer and a third party - generally to facilitate trade. Fair values are based on fees charged to enter into similar agreements. + References No definition available. + Details
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- Definition Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. 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