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Derivatives (Derivatives Not Designated as Hedging Instruments - Foreign Exchange Contracts) (Details) - USD ($) $ in Thousands | Jun. 30, 2021 | Dec. 31, 2020
--- | --- | ---
Derivative [Line Items] |  |
Gross amounts recognized | $ 588,582 | $ 602,754
Derivative liabilities - Fair value | 448,921 | 424,828
Derivatives not designated as hedging instruments |  |
Derivative [Line Items] |  |
Notional Amount | 21,676,672 | 21,341,158
Gross amounts recognized | 588,582 | 602,754
Derivative liabilities - Fair value | 447,542 | 422,729
Foreign exchange contracts | Derivatives not designated as hedging instruments |  |
Derivative [Line Items] |  |
Notional Amount | 3,756,284 | 3,108,488
Gross amounts recognized | 29,867 | 30,300
Derivative liabilities - Fair value | 20,360 | 22,524
Foreign exchange contracts | Customer Counterparty | Forwards and spot | Derivatives not designated as hedging instruments |  |
Derivative [Line Items] |  |
Notional Amount | 2,299,644 | 1,522,888
Gross amounts recognized | 20,026 | 17,575
Derivative liabilities - Fair value | 16,189 | 17,928
Foreign exchange contracts | Customer Counterparty | Swaps | Derivatives not designated as hedging instruments |  |
Derivative [Line Items] |  |
Notional Amount | 103,086 | 13,590
Gross amounts recognized | 182 | 872
Derivative liabilities - Fair value | 651 | 91
Foreign exchange contracts | Customer Counterparty | Written options | Derivatives not designated as hedging instruments |  |
Derivative [Line Items] |  |
Notional Amount | 118,350 | 117,729
Gross amounts recognized | 0 | 0
Derivative liabilities - Fair value | 31 | 574
Foreign exchange contracts | Customer Counterparty | Collars | Derivatives not designated as hedging instruments |  |
Derivative [Line Items] |  |
Notional Amount | 2,135 |
Gross amounts recognized | 1 |
Derivative liabilities - Fair value | 0 |
Foreign exchange contracts | Customer Counterparty | Foreign exchange contracts | Derivatives not designated as hedging instruments |  |
Derivative [Line Items] |  |
Notional Amount | 2,523,215 | 1,654,207
Gross amounts recognized | 20,209 | 18,447
Derivative liabilities - Fair value | 16,871 | 18,593
Foreign exchange contracts | Financial Counterparty | Forwards and spot | Derivatives not designated as hedging instruments |  |
Derivative [Line Items] |  |
Notional Amount | 219,671 | 145,197
Gross amounts recognized | 1,575 | 1,230
Derivative liabilities - Fair value | 1,083 | 273
Foreign exchange contracts | Financial Counterparty | Swaps | Derivatives not designated as hedging instruments |  |
Derivative [Line Items] |  |
Notional Amount | 892,913 | 1,191,355
Gross amounts recognized | 8,052 | 10,049
Derivative liabilities - Fair value | 2,405 | 3,658
Foreign exchange contracts | Financial Counterparty | Purchased options | Derivatives not designated as hedging instruments |  |
Derivative [Line Items] |  |
Notional Amount | 118,350 | 117,729
Gross amounts recognized | 31 | 574
Derivative liabilities - Fair value | 0 | 0
Foreign exchange contracts | Financial Counterparty | Collars | Derivatives not designated as hedging instruments |  |
Derivative [Line Items] |  |
Notional Amount | 2,135 |
Gross amounts recognized | 0 |
Derivative liabilities - Fair value | 1 |
Foreign exchange contracts | Financial Counterparty | Foreign exchange contracts | Derivatives not designated as hedging instruments |  |
Derivative [Line Items] |  |
Notional Amount | 1,233,069 | 1,454,281
Gross amounts recognized | 9,658 | 11,853
Derivative liabilities - Fair value | $ 3,489 | $ 3,931

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