Derivatives and Hedging Activity - Effect on Financial Statements (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Derivatives
Gain on derivative financial instruments, net	$ 127,268	$ 33,989
Interest rate contracts
Derivatives
Gain on derivative financial instruments, net	102,933	20,158
Interest rate swap guarantees
Derivatives
Gain on derivative financial instruments, net	159	351
Foreign exchange contracts
Derivatives
Gain on derivative financial instruments, net	24,142	13,602
Credit instruments
Derivatives
Gain on derivative financial instruments, net	$ 34	$ (122)