Parent Company Only Financial Information, Balance Sheet (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Assets
Cash and Due from Banks	$ 484,384	$ 436,952
Interest-bearing deposits in other financial institutions	425,089	156,693
Other assets	658,604	547,621
Total assets	41,015,855	39,405,727
Liabilities and stockholders' equity
Commercial Paper	0	20,798
Subordinated notes, at par	550,000	250,000
Long-term funding capitalized costs and fair value hedge liability	7,748	544
Total long-term funding	1,741,463
Other Liabilities	552,814	541,438
Total liabilities	36,841,882	35,390,237
Preferred equity	194,112	194,112
Common equity	1,752	1,752
Total stockholders’ equity	4,173,973	4,015,490	$ 4,024,853	$ 4,090,933
Total liabilities and stockholders’ equity	41,015,855	39,405,727
Parent Company Only
Assets
Cash and Due from Banks	22,473	14,899
Interest-bearing deposits in other financial institutions	20,428	29,856
Notes and interest receivable from subsidiaries	562,640	172,066
Investments in and receivable due from subsidiaries	4,080,536	4,036,273
Other assets	48,589	48,097
Total assets	4,734,666	4,301,191
Liabilities and stockholders' equity
Commercial Paper	0	20,798
Subordinated notes, at par	550,000	250,000
Long-term funding capitalized costs and fair value hedge liability	(9,114)	(2,399)
Total long-term funding	540,886	247,601
Other Liabilities	19,807	17,301
Total liabilities	560,693	285,701
Preferred equity	194,112	194,112
Common equity	3,979,861	3,821,378
Total stockholders’ equity	4,173,973	4,015,490
Total liabilities and stockholders’ equity	$ 4,734,666	$ 4,301,191