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Derivatives (Fair Values of Derivative Financial Instruments) (Details) - USD ($) $ in Thousands | 9 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2022 | Dec. 31, 2021
Derivatives Fair Value [Line Items] |  |  |
Notional or Contractual Amount |  | $ 8,576,234 | $ 8,649,657
Fair Values, Assets |  | 114,680 | 6,908
Fair Values, Assets | [1] | 256,809 | 106,171
Less: netting adjustment | [1],[2] | (137,709) | (30,304)
Fair Values, Liabilities |  | 37,879 | 22,244
Fair Values, Liabilities | [1] | 315,135 | 96,580
Less: netting adjustment | [1],[2] | (88,697) | (61,534)
Other Assets [Member] |  |  |
Derivatives Fair Value [Line Items] |  |  |
Total derivative assets/liabilities | [1] | 119,100 | 75,867
Other Liabilities [Member] |  |  |
Derivatives Fair Value [Line Items] |  |  |
Total derivative assets/liabilities | [1] | 226,438 | 35,046
Derivatives Designated as Hedging Instruments [Member] |  |  |
Derivatives Fair Value [Line Items] |  |  |
Notional or Contractual Amount |  | 2,984,900 | 2,962,650
Fair Values, Assets | [1] | 62,610 | 28,022
Fair Values, Liabilities | [1] | 122,433 | 15,111
Derivatives Not Designated as Hedging Instruments [Member] |  |  |
Derivatives Fair Value [Line Items] |  |  |
Notional or Contractual Amount |  | 5,591,334 | 5,687,007
Fair Values, Assets | [1] | 194,199 | 78,149
Fair Values, Liabilities | [1] | 192,702 | 81,469
Derivatives Not Designated as Hedging Instruments [Member] | Interest Rate Swaps [Member] |  |  |
Derivatives Fair Value [Line Items] |  |  |
Notional or Contractual Amount |  | 5,046,771 | 5,193,991
Fair Values, Assets | [1] | 188,799 | 75,819
Fair Values, Liabilities | [1] | 185,546 | 75,861
Derivatives Not Designated as Hedging Instruments [Member] | Risk Participation Agreements [Member] |  |  |
Derivatives Fair Value [Line Items] |  |  |
Notional or Contractual Amount |  | 286,091 | 217,437
Fair Values, Assets | [1] | 1 | 11
Fair Values, Liabilities | [1] | 9 | 35
Derivatives Not Designated as Hedging Instruments [Member] | Forward Commitments to Sell Residential Mortgage Loans [Member] |  |  |
Derivatives Fair Value [Line Items] |  |  |
Notional or Contractual Amount |  | 18,517 | 46,739
Fair Values, Assets | [1] | 158 | 1
Fair Values, Liabilities | [1] | 69 | 645
Derivatives Not Designated as Hedging Instruments [Member] | Interest Rate-Lock Commitments on Residential Mortgage Loans [Member] |  |  |
Derivatives Fair Value [Line Items] |  |  |
Notional or Contractual Amount |  | 28,414 | 82,037
Fair Values, Assets | [1] | 143 | 1,525
Fair Values, Liabilities | [1] | 178 | 1
Derivatives Not Designated as Hedging Instruments [Member] | To Be Announced (TBA) Securities [Member] |  |  |
Derivatives Fair Value [Line Items] |  |  |
Notional or Contractual Amount |  | 15,000 | 55,000
Fair Values, Assets | [1] | 431 | 15
Fair Values, Liabilities | [1] | 4 | 53
Derivatives Not Designated as Hedging Instruments [Member] | Foreign Exchange Forward Contracts [Member] |  |  |
Derivatives Fair Value [Line Items] |  |  |
Notional or Contractual Amount |  | 153,430 | 48,364
Fair Values, Assets | [1] | 4,667 | 778
Fair Values, Liabilities | [1] | 4,601 | 758
Derivatives Not Designated as Hedging Instruments [Member] | Visa Class B derivative contract [Member] |  |  |
Derivatives Fair Value [Line Items] |  |  |
Notional or Contractual Amount |  | 43,111 | 43,439
Fair Values, Liabilities | [1] | 2,295 | 4,116
Cash Flow Hedge [Member] | Derivatives Designated as Hedging Instruments [Member] | Interest Rate Swaps - Variable Rate Loans [Member] |  |  |
Derivatives Fair Value [Line Items] |  |  |
Notional or Contractual Amount |  | 2,050,000 | 1,125,000
Fair Values, Assets | [1] |  | 5,884
Fair Values, Liabilities | [1] | $ 122,433 | $ 4,421
Fair Value Hedging [Member] | Derivatives Designated as Hedging Instruments [Member] | Interest Rate Swaps - Variable Rate Loans [Member] |  |  |
Derivatives Fair Value [Line Items] |  |  |
Derivative Asset, Statement of Financial Position [Extensible Enumeration] |  | Other Assets | Other Assets
Derivative Liability, Statement of Financial Position [Extensible Enumeration] |  | Other Liabilities | Other Liabilities
Fair Value Hedging [Member] | Derivatives Designated as Hedging Instruments [Member] | Interest Rate Swaps - Securities [Member] |  |  |
Derivatives Fair Value [Line Items] |  |  |
Notional or Contractual Amount |  | $ 934,900 | $ 1,837,650
Fair Values, Assets | [1] | $ 62,610 | $ 22,138
Derivative Asset, Statement of Financial Position [Extensible Enumeration] |  | Other Assets | Other Assets
Fair Values, Liabilities | [1] |  | $ 10,690
Derivative Liability, Statement of Financial Position [Extensible Enumeration] |  | Other Liabilities | Other Liabilities
[1] | Derivative assets and liabilities are reported at fair value in other assets or other liabilities, respectively, in the consolidated balance sheets.
[2] | Represents balance sheet netting of derivative assets and liabilities for variation margin collateral held or placed with the same central clearing counterparty. See offsetting assets and liabilities for further information.

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