Commitments and Contingencies Commitments (Details) $ in Thousands	Dec. 31, 2023 USD ($)
Lending related commitments [Line Items]
Unused Commitments to Extend Credit	$ 5,088,819
Commitments to fund loans
Lending related commitments [Line Items]
Unused Commitments to Extend Credit	257,398
Unfunded commitments under lines of credit
Lending related commitments [Line Items]
Unused Commitments to Extend Credit	4,659,184
Commercial and standby letters of credit
Lending related commitments [Line Items]
Unused Commitments to Extend Credit	$ 172,237