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Derivatives (Derivatives Not Designated as Hedging Instruments - Foreign Exchange Contracts) (Details) - USD ($) $ in Thousands | Mar. 31, 2021 | Dec. 31, 2020
--- | --- | ---
Derivative [Line Items] |  |
Gross amounts recognized | $ 457,317 | $ 602,754
Derivative liabilities - Fair value | 344,135 | 424,828
Derivatives not designated as hedging instruments |  |
Derivative [Line Items] |  |
Notional Amount | 22,005,910 | 21,341,158
Gross amounts recognized | 456,409 | 602,754
Derivative liabilities - Fair value | 342,877 | 422,729
Foreign exchange contracts | Derivatives not designated as hedging instruments |  |
Derivative [Line Items] |  |
Notional Amount | 4,036,958 | 3,108,488
Gross amounts recognized | 38,654 | 30,300
Derivative liabilities - Fair value | 27,287 | 22,524
Foreign exchange contracts | Customer Counterparty | Forwards and spot | Derivatives not designated as hedging instruments |  |
Derivative [Line Items] |  |
Notional Amount | 2,468,974 | 1,522,888
Gross amounts recognized | 27,803 | 17,575
Derivative liabilities - Fair value | 21,835 | 17,928
Foreign exchange contracts | Customer Counterparty | Swaps | Derivatives not designated as hedging instruments |  |
Derivative [Line Items] |  |
Notional Amount | 184,584 | 13,590
Gross amounts recognized | 1,902 | 872
Derivative liabilities - Fair value | 247 | 91
Foreign exchange contracts | Customer Counterparty | Written options | Derivatives not designated as hedging instruments |  |
Derivative [Line Items] |  |
Notional Amount | 116,575 | 117,729
Gross amounts recognized | 0 | 0
Derivative liabilities - Fair value | 336 | 574
Foreign exchange contracts | Customer Counterparty | Collars | Derivatives not designated as hedging instruments |  |
Derivative [Line Items] |  |
Notional Amount | 3,167 |
Gross amounts recognized | 0 |
Derivative liabilities - Fair value | 11 |
Foreign exchange contracts | Customer Counterparty | Foreign exchange contracts | Derivatives not designated as hedging instruments |  |
Derivative [Line Items] |  |
Notional Amount | 2,773,300 | 1,654,207
Gross amounts recognized | 29,705 | 18,447
Derivative liabilities - Fair value | 22,429 | 18,593
Foreign exchange contracts | Financial Counterparty | Forwards and spot | Derivatives not designated as hedging instruments |  |
Derivative [Line Items] |  |
Notional Amount | 168,942 | 145,197
Gross amounts recognized | 869 | 1,230
Derivative liabilities - Fair value | 494 | 273
Foreign exchange contracts | Financial Counterparty | Swaps | Derivatives not designated as hedging instruments |  |
Derivative [Line Items] |  |
Notional Amount | 974,974 | 1,191,355
Gross amounts recognized | 7,733 | 10,049
Derivative liabilities - Fair value | 4,364 | 3,658
Foreign exchange contracts | Financial Counterparty | Purchased options | Derivatives not designated as hedging instruments |  |
Derivative [Line Items] |  |
Notional Amount | 116,575 | 117,729
Gross amounts recognized | 336 | 574
Derivative liabilities - Fair value | 0 | 0
Foreign exchange contracts | Financial Counterparty | Collars | Derivatives not designated as hedging instruments |  |
Derivative [Line Items] |  |
Notional Amount | 3,167 |
Gross amounts recognized | 11 |
Derivative liabilities - Fair value | 0 |
Foreign exchange contracts | Financial Counterparty | Foreign exchange contracts | Derivatives not designated as hedging instruments |  |
Derivative [Line Items] |  |
Notional Amount | 1,263,658 | 1,454,281
Gross amounts recognized | 8,949 | 11,853
Derivative liabilities - Fair value | $ 4,858 | $ 3,931

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