Unfunded Loan Commitments (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Credit Loss [Abstract]
Contractual obligation	$ 1,600,000		$ 1,600,000
Allowance
Beginning balance	32,720	$ 32,707	124,924	$ 72,713
Provision/New commitments - net	52,446	99,692	104,698	147,146
Other provision items	5,622	21,654	9,679	28,880
Transfer - funded loans	(28,188)	(40,528)	(176,701)	(135,214)
Ending balance	62,600	113,525	62,600	113,525
Unfunded Commitments
Beginning balance	684,353	561,748	1,995,808	1,776,976
Provision/New commitments - net	1,529,368	1,466,865	2,654,184	2,435,695
Other provision items	0	0	0	0
Transfer - funded loans	(650,865)	(614,773)	(3,087,136)	(2,798,831)
Ending balance	$ 1,562,856	$ 1,413,840	$ 1,562,856	$ 1,413,840