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Fair Value Measurement and Fair Value of Financial Instruments (Financial Assets and Liabilities Measurement on Recurring Basis) (Details) - USD ($) $ in Thousands | Mar. 31, 2020 | Dec. 31, 2019
--- | --- | ---
Available-for-sale debt securities |  |
AFS debt securities | $ 3,695,943 | $ 3,317,214
Derivative |  |
Derivative assets - Fair value | 834,204 | 330,316
Derivative asset, after netting | 655,430 | 204,997
Derivative liabilities - Fair value | 658,515 | 256,528
Derivative liability, after netting | 415,414 | 96,729
U.S. Treasury securities |  |
Available-for-sale debt securities |  |
AFS debt securities | 51,428 | 176,422
U.S. government agency and U.S. government-sponsored enterprise debt securities |  |
Available-for-sale debt securities |  |
AFS debt securities | 518,408 | 581,245
U.S. government agency and U.S. government-sponsored enterprise mortgage-backed securities - Commercial mortgage-backed securities |  |
Available-for-sale debt securities |  |
AFS debt securities | 697,948 | 603,471
U.S. government agency and U.S. government-sponsored enterprise mortgage-backed securities - Residential mortgage-backed securities |  |
Available-for-sale debt securities |  |
AFS debt securities | 1,352,367 | 1,003,897
Municipal securities |  |
Available-for-sale debt securities |  |
AFS debt securities | 309,626 | 102,302
Non-agency commercial mortgage-backed securities |  |
Available-for-sale debt securities |  |
AFS debt securities | 87,114 | 88,550
Non-agency residential mortgage-backed securities |  |
Available-for-sale debt securities |  |
AFS debt securities | 62,134 | 46,548
Corporate debt securities |  |
Available-for-sale debt securities |  |
AFS debt securities | 10,963 | 11,149
Foreign bonds |  |
Available-for-sale debt securities |  |
AFS debt securities | 284,521 | 354,172
Asset-backed securities |  |
Available-for-sale debt securities |  |
AFS debt securities | 61,556 | 64,752
Collateralized loan obligations (“CLOs”) |  |
Available-for-sale debt securities |  |
AFS debt securities | 259,878 | 284,706
Fair Value, Measurements, Recurring |  |
Available-for-sale debt securities |  |
AFS debt securities | 3,695,943 | 3,317,214
Equity Securities, FV-NI and with Readily Determinable Fair Value [Abstract] |  |
Equity securities | 30,330 | 31,673
Total investments in tax credit and other investments | 30,330 | 31,673
Derivative |  |
Derivative assets - Fair value | 834,204 | 330,316
Netting adjustments | (178,774) | (125,319)
Derivative asset, after netting | 655,430 | 204,997
Derivative liabilities - Fair value | 658,515 | 256,528
Netting adjustments | (243,101) | (159,799)
Derivative liability, after netting | 415,414 | 96,729
Fair Value, Measurements, Recurring | Interest rate contracts |  |
Derivative |  |
Derivative assets - Fair value | 605,122 | 192,883
Derivative liabilities - Fair value | 403,351 | 127,317
Fair Value, Measurements, Recurring | Foreign exchange contracts |  |
Derivative |  |
Derivative assets - Fair value | 64,383 | 54,637
Derivative liabilities - Fair value | 55,658 | 48,610
Fair Value, Measurements, Recurring | Credit contracts |  |
Derivative |  |
Derivative assets - Fair value | 8 | 2
Derivative liabilities - Fair value | 218 | 84
Fair Value, Measurements, Recurring | Equity contracts |  |
Derivative |  |
Derivative assets - Fair value | 1,128 | 1,414
Fair Value, Measurements, Recurring | Commodity contracts |  |
Derivative |  |
Derivative assets - Fair value | 163,563 | 81,380
Derivative liabilities - Fair value | 199,288 | 80,517
Fair Value, Measurements, Recurring | U.S. Treasury securities |  |
Available-for-sale debt securities |  |
AFS debt securities | 51,428 | 176,422
Fair Value, Measurements, Recurring | U.S. government agency and U.S. government-sponsored enterprise debt securities |  |
Available-for-sale debt securities |  |
AFS debt securities | 518,408 | 581,245
Fair Value, Measurements, Recurring | U.S. government agency and U.S. government-sponsored enterprise mortgage-backed securities - Commercial mortgage-backed securities |  |
Available-for-sale debt securities |  |
AFS debt securities | 697,948 | 603,471
Fair Value, Measurements, Recurring | U.S. government agency and U.S. government-sponsored enterprise mortgage-backed securities - Residential mortgage-backed securities |  |
Available-for-sale debt securities |  |
AFS debt securities | 1,352,367 | 1,003,897
Fair Value, Measurements, Recurring | Municipal securities |  |
Available-for-sale debt securities |  |
AFS debt securities | 309,626 | 102,302
Fair Value, Measurements, Recurring | Non-agency commercial mortgage-backed securities |  |
Available-for-sale debt securities |  |
AFS debt securities | 87,114 | 88,550
Fair Value, Measurements, Recurring | Non-agency residential mortgage-backed securities |  |
Available-for-sale debt securities |  |
AFS debt securities | 62,134 | 46,548
Fair Value, Measurements, Recurring | Corporate debt securities |  |
Available-for-sale debt securities |  |
AFS debt securities | 10,963 | 11,149
Fair Value, Measurements, Recurring | Foreign bonds |  |
Available-for-sale debt securities |  |
AFS debt securities | 284,521 | 354,172
Fair Value, Measurements, Recurring | Asset-backed securities |  |
Available-for-sale debt securities |  |
AFS debt securities | 61,556 | 64,752
Fair Value, Measurements, Recurring | Collateralized loan obligations (“CLOs”) |  |
Available-for-sale debt securities |  |
AFS debt securities | 259,878 | 284,706
Fair Value, Measurements, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) |  |
Available-for-sale debt securities |  |
AFS debt securities | 51,428 | 176,422
Equity Securities, FV-NI and with Readily Determinable Fair Value [Abstract] |  |
Equity securities | 22,195 | 21,746
Total investments in tax credit and other investments | 22,195 | 21,746
Derivative |  |
Derivative assets - Fair value | 0 | 0
Netting adjustments | 0 | 0
Derivative asset, after netting | 0 | 0
Derivative liabilities - Fair value | 0 | 0
Netting adjustments | 0 | 0
Derivative liability, after netting | 0 | 0
Fair Value, Measurements, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | Interest rate contracts |  |
Derivative |  |
Derivative assets - Fair value | 0 | 0
Derivative liabilities - Fair value | 0 | 0
Fair Value, Measurements, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | Foreign exchange contracts |  |
Derivative |  |
Derivative assets - Fair value | 0 | 0
Derivative liabilities - Fair value | 0 | 0
Fair Value, Measurements, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | Credit contracts |  |
Derivative |  |
Derivative assets - Fair value | 0 | 0
Derivative liabilities - Fair value | 0 | 0
Fair Value, Measurements, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | Equity contracts |  |
Derivative |  |
Derivative assets - Fair value | 0 | 0
Fair Value, Measurements, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | Commodity contracts |  |
Derivative |  |
Derivative assets - Fair value | 0 | 0
Derivative liabilities - Fair value | 0 | 0
Fair Value, Measurements, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | U.S. Treasury securities |  |
Available-for-sale debt securities |  |
AFS debt securities | 51,428 | 176,422
Fair Value, Measurements, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | U.S. government agency and U.S. government-sponsored enterprise debt securities |  |
Available-for-sale debt securities |  |
AFS debt securities | 0 | 0
Fair Value, Measurements, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | U.S. government agency and U.S. government-sponsored enterprise mortgage-backed securities - Commercial mortgage-backed securities |  |
Available-for-sale debt securities |  |
AFS debt securities | 0 | 0
Fair Value, Measurements, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | U.S. government agency and U.S. government-sponsored enterprise mortgage-backed securities - Residential mortgage-backed securities |  |
Available-for-sale debt securities |  |
AFS debt securities | 0 | 0
Fair Value, Measurements, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | Municipal securities |  |
Available-for-sale debt securities |  |
AFS debt securities | 0 | 0
Fair Value, Measurements, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | Non-agency commercial mortgage-backed securities |  |
Available-for-sale debt securities |  |
AFS debt securities | 0 | 0
Fair Value, Measurements, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | Non-agency residential mortgage-backed securities |  |
Available-for-sale debt securities |  |
AFS debt securities | 0 | 0
Fair Value, Measurements, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | Corporate debt securities |  |
Available-for-sale debt securities |  |
AFS debt securities | 0 | 0
Fair Value, Measurements, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | Foreign bonds |  |
Available-for-sale debt securities |  |
AFS debt securities | 0 | 0
Fair Value, Measurements, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | Asset-backed securities |  |
Available-for-sale debt securities |  |
AFS debt securities | 0 | 0
Fair Value, Measurements, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | Collateralized loan obligations (“CLOs”) |  |
Available-for-sale debt securities |  |
AFS debt securities | 0 | 0
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) |  |
Available-for-sale debt securities |  |
AFS debt securities | 3,644,515 | 3,140,792
Equity Securities, FV-NI and with Readily Determinable Fair Value [Abstract] |  |
Equity securities | 8,135 | 9,927
Total investments in tax credit and other investments | 8,135 | 9,927
Derivative |  |
Derivative assets - Fair value | 833,491 | 329,895
Netting adjustments | (178,774) | (125,319)
Derivative asset, after netting | 654,717 | 204,576
Derivative liabilities - Fair value | 658,515 | 256,528
Netting adjustments | (243,101) | (159,799)
Derivative liability, after netting | 415,414 | 96,729
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) | Interest rate contracts |  |
Derivative |  |
Derivative assets - Fair value | 605,122 | 192,883
Derivative liabilities - Fair value | 403,351 | 127,317
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) | Foreign exchange contracts |  |
Derivative |  |
Derivative assets - Fair value | 64,383 | 54,637
Derivative liabilities - Fair value | 55,658 | 48,610
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) | Credit contracts |  |
Derivative |  |
Derivative assets - Fair value | 8 | 2
Derivative liabilities - Fair value | 218 | 84
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) | Equity contracts |  |
Derivative |  |
Derivative assets - Fair value | 415 | 993
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) | Commodity contracts |  |
Derivative |  |
Derivative assets - Fair value | 163,563 | 81,380
Derivative liabilities - Fair value | 199,288 | 80,517
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) | U.S. Treasury securities |  |
Available-for-sale debt securities |  |
AFS debt securities | 0 | 0
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) | U.S. government agency and U.S. government-sponsored enterprise debt securities |  |
Available-for-sale debt securities |  |
AFS debt securities | 518,408 | 581,245
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) | U.S. government agency and U.S. government-sponsored enterprise mortgage-backed securities - Commercial mortgage-backed securities |  |
Available-for-sale debt securities |  |
AFS debt securities | 697,948 | 603,471
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) | U.S. government agency and U.S. government-sponsored enterprise mortgage-backed securities - Residential mortgage-backed securities |  |
Available-for-sale debt securities |  |
AFS debt securities | 1,352,367 | 1,003,897
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) | Municipal securities |  |
Available-for-sale debt securities |  |
AFS debt securities | 309,626 | 102,302
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) | Non-agency commercial mortgage-backed securities |  |
Available-for-sale debt securities |  |
AFS debt securities | 87,114 | 88,550
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) | Non-agency residential mortgage-backed securities |  |
Available-for-sale debt securities |  |
AFS debt securities | 62,134 | 46,548
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) | Corporate debt securities |  |
Available-for-sale debt securities |  |
AFS debt securities | 10,963 | 11,149
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) | Foreign bonds |  |
Available-for-sale debt securities |  |
AFS debt securities | 284,521 | 354,172
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) | Asset-backed securities |  |
Available-for-sale debt securities |  |
AFS debt securities | 61,556 | 64,752
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) | Collateralized loan obligations (“CLOs”) |  |
Available-for-sale debt securities |  |
AFS debt securities | 259,878 | 284,706
Fair Value, Measurements, Recurring | Significant Unobservable Inputs (Level 3) |  |
Available-for-sale debt securities |  |
AFS debt securities | 0 | 0
Equity Securities, FV-NI and with Readily Determinable Fair Value [Abstract] |  |
Equity securities | 0 | 0
Total investments in tax credit and other investments | 0 | 0
Derivative |  |
Derivative assets - Fair value | 713 | 421
Netting adjustments | 0 | 0
Derivative asset, after netting | 713 | 421
Derivative liabilities - Fair value | 0 | 0
Netting adjustments | 0 | 0
Derivative liability, after netting | 0 | 0
Fair Value, Measurements, Recurring | Significant Unobservable Inputs (Level 3) | Interest rate contracts |  |
Derivative |  |
Derivative assets - Fair value | 0 | 0
Derivative liabilities - Fair value | 0 | 0
Fair Value, Measurements, Recurring | Significant Unobservable Inputs (Level 3) | Foreign exchange contracts |  |
Derivative |  |
Derivative assets - Fair value | 0 | 0
Derivative liabilities - Fair value | 0 | 0
Fair Value, Measurements, Recurring | Significant Unobservable Inputs (Level 3) | Credit contracts |  |
Derivative |  |
Derivative assets - Fair value | 0 | 0
Derivative liabilities - Fair value | 0 | 0
Fair Value, Measurements, Recurring | Significant Unobservable Inputs (Level 3) | Equity contracts |  |
Derivative |  |
Derivative assets - Fair value | 713 | 421
Fair Value, Measurements, Recurring | Significant Unobservable Inputs (Level 3) | Commodity contracts |  |
Derivative |  |
Derivative assets - Fair value | 0 | 0
Derivative liabilities - Fair value | 0 | 0
Fair Value, Measurements, Recurring | Significant Unobservable Inputs (Level 3) | U.S. Treasury securities |  |
Available-for-sale debt securities |  |
AFS debt securities | 0 | 0
Fair Value, Measurements, Recurring | Significant Unobservable Inputs (Level 3) | U.S. government agency and U.S. government-sponsored enterprise debt securities |  |
Available-for-sale debt securities |  |
AFS debt securities | 0 | 0
Fair Value, Measurements, Recurring | Significant Unobservable Inputs (Level 3) | U.S. government agency and U.S. government-sponsored enterprise mortgage-backed securities - Commercial mortgage-backed securities |  |
Available-for-sale debt securities |  |
AFS debt securities | 0 | 0
Fair Value, Measurements, Recurring | Significant Unobservable Inputs (Level 3) | U.S. government agency and U.S. government-sponsored enterprise mortgage-backed securities - Residential mortgage-backed securities |  |
Available-for-sale debt securities |  |
AFS debt securities | 0 | 0
Fair Value, Measurements, Recurring | Significant Unobservable Inputs (Level 3) | Municipal securities |  |
Available-for-sale debt securities |  |
AFS debt securities | 0 | 0
Fair Value, Measurements, Recurring | Significant Unobservable Inputs (Level 3) | Non-agency commercial mortgage-backed securities |  |
Available-for-sale debt securities |  |
AFS debt securities | 0 | 0
Fair Value, Measurements, Recurring | Significant Unobservable Inputs (Level 3) | Non-agency residential mortgage-backed securities |  |
Available-for-sale debt securities |  |
AFS debt securities | 0 | 0
Fair Value, Measurements, Recurring | Significant Unobservable Inputs (Level 3) | Corporate debt securities |  |
Available-for-sale debt securities |  |
AFS debt securities | 0 | 0
Fair Value, Measurements, Recurring | Significant Unobservable Inputs (Level 3) | Foreign bonds |  |
Available-for-sale debt securities |  |
AFS debt securities | 0 | 0
Fair Value, Measurements, Recurring | Significant Unobservable Inputs (Level 3) | Asset-backed securities |  |
Available-for-sale debt securities |  |
AFS debt securities | 0 | 0
Fair Value, Measurements, Recurring | Significant Unobservable Inputs (Level 3) | Collateralized loan obligations (“CLOs”) |  |
Available-for-sale debt securities |  |
AFS debt securities | $ 0 | $ 0

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