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Fair Value Measurements Narrative (Details) - USD ($) $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2021 | Dec. 31, 2020
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Estimated Fair Value | $ 3,187,390 | $ 3,062,143
Assumed market return to liquidity | 5 years |
Minimum |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Assumptions used to estimate fair value, prepayment speed | 14.60% |
Assumptions used to estimate fair value, discount rate | 9.00% |
Fair Value, Measurements, Recurring |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Estimated Fair Value | $ 3,187,390 | 3,062,143
Derivative assets | 161,243 | 339,310
Fair Value, Measurements, Recurring | Level 2 |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Estimated Fair Value | 2,985,105 | 2,963,937
Derivative assets | 160,945 | 338,987
Fair Value, Measurements, Recurring | Level 3 |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Estimated Fair Value | 74,667 | 98,206
Derivative assets | 0 | 0
Fair Value, Measurements, Recurring | Level 1 |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Estimated Fair Value | 127,618 | 0
Derivative assets | 298 | 323
Fair Value, Measurements, Recurring | Foreign Exchange Contract | Level 1 |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Total liabilities | 300 |
Fair Value, Measurements, Recurring | Foreign Exchange Contract | Level 1 |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Derivative assets | 298 | 323
Fair Value, Measurements, Recurring | Forward Commitments | Level 2 |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Derivative assets | 2,400 | 8,000
Total liabilities | 0 | 2,300
Fair Value, Measurements, Recurring | Interest Rate Swap | Level 2 |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Other financial assets | 158,600 | 331,000
Total liabilities | 86,100 | 165,200
Corporate debt securities |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Estimated Fair Value | 386,133 | 367,145
Corporate debt securities | Fair Value, Measurements, Recurring |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Estimated Fair Value | 386,133 | 367,145
Corporate debt securities | Fair Value, Measurements, Recurring | Level 2 |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Estimated Fair Value | 386,133 | 367,145
Corporate debt securities | Fair Value, Measurements, Recurring | Level 3 |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Estimated Fair Value | 0 | 0
Corporate debt securities | Fair Value, Measurements, Recurring | Level 1 |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Estimated Fair Value | 0 | 0
Financial Institutions Subordinated Debt | Fair Value, Measurements, Recurring | Level 2 |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Estimated Fair Value | 383,400 | 362,800
Other Corporate Debt | Fair Value, Measurements, Recurring | Level 2 |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Estimated Fair Value | $ 2,800 | $ 4,400

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