LHI and ACL - Schedule of Amortized Cost Basis of Collateral Dependent Loans (Details) - USD ($) $ in Thousands	Jun. 30, 2025	Mar. 31, 2025	Dec. 31, 2024	Jun. 30, 2024	Mar. 31, 2024	Dec. 31, 2023
Servicing Asset at Amortized Cost [Line Items]
Real Property	$ 9,461,738		$ 9,513,526
ACL Allocation	112,262	$ 111,773	111,745	$ 113,431	$ 112,032	$ 109,816
Commercial
Servicing Asset at Amortized Cost [Line Items]
Real Property	2,692,209		2,693,538
ACL Allocation	16,941	16,728	17,654	29,561	32,791	35,886
Real Property
Servicing Asset at Amortized Cost [Line Items]
Real Property	26,119		4,798
Real Property \| Commercial
Servicing Asset at Amortized Cost [Line Items]
Real Property	1,932		2,873
ACL Allocation
Servicing Asset at Amortized Cost [Line Items]
ACL Allocation	402		616
ACL Allocation \| Commercial
Servicing Asset at Amortized Cost [Line Items]
ACL Allocation	402		532
OOCRE \| Real estate: \| Commercial Real Estate
Servicing Asset at Amortized Cost [Line Items]
Real Property	800,881		780,003
ACL Allocation	17,007	17,791	17,546	13,100	9,802	10,252
OOCRE \| Real Property \| Real estate: \| Commercial Real Estate
Servicing Asset at Amortized Cost [Line Items]
Real Property	0		1,925
OOCRE \| ACL Allocation \| Real estate: \| Commercial Real Estate
Servicing Asset at Amortized Cost [Line Items]
ACL Allocation	0		84
NOOCRE \| Real estate: \| Commercial Real Estate
Servicing Asset at Amortized Cost [Line Items]
Real Property	2,311,466		2,382,499
ACL Allocation	34,779	$ 35,491	39,968	$ 33,363	$ 31,137	$ 27,729
NOOCRE \| Real Property \| Real estate: \| Commercial Real Estate
Servicing Asset at Amortized Cost [Line Items]
Real Property	24,187		0
NOOCRE \| ACL Allocation \| Real estate: \| Commercial Real Estate
Servicing Asset at Amortized Cost [Line Items]
ACL Allocation	$ 0		$ 0