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Fair Value Measurements Narrative (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Estimated Fair Value	$ 2,646,767	$ 3,187,390
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	8.00%
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	$ 2,646,767	3,187,390
Derivative assets	167,468	161,243
Fair Value, Measurements, Recurring | Level 2
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Estimated Fair Value	2,428,282	2,985,105
Derivative assets	166,796	160,945
Fair Value, Measurements, Recurring | Level 3
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Estimated Fair Value	0	74,667
Derivative assets	0	0
Fair Value, Measurements, Recurring | Level 1
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Estimated Fair Value	218,485	127,618
Derivative assets	672	298
Fair Value, Measurements, Recurring | Foreign Exchange Contract | Level 1
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Total liabilities	600	300
Fair Value, Measurements, Recurring | Foreign Exchange Contract | Level 1
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets	700	300
Fair Value, Measurements, Recurring | Forward Commitments | Level 2
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets	200	2,400
Total liabilities	200	0
Fair Value, Measurements, Recurring | Interest Rate Swap | Level 2
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Other financial assets	166,600	158,600
Total liabilities	296,300	86,100
Corporate debt securities
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Estimated Fair Value	422,309	386,133
Corporate debt securities | Fair Value, Measurements, Recurring
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Estimated Fair Value	422,309	386,133
Corporate debt securities | Fair Value, Measurements, Recurring | Level 2
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Estimated Fair Value	422,309	386,133
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	415,400	383,400
Other Corporate Debt | Fair Value, Measurements, Recurring | Level 2
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Estimated Fair Value	$ 6,900	$ 2,800

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