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Fair Value - Changes in Fair Value for Items Measured at Fair Value Pursuant to Election of the Fair Value (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Schedule of Trading Securities and Other Trading Assets [Line Items]
Interest income (expense)	$ 596,400	$ 596,094	$ 604,273
Interest (Expense)	(42,249)	(67,214)	$ (126,114)
Residential loans held for sale
Schedule of Trading Securities and Other Trading Assets [Line Items]
Other Gains and (Losses)	(2,139)	1,962
Interest income (expense)	2	18
Interest (Expense)	(6)	(24)
Total Changes in Fair Values Included in Current Period Earnings	$ (2,143)	$ 1,956

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Amount of the cost of borrowed funds accounted for as interest expense.

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