Short-Term Borrowings and Long-Term Debt Short Term (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Short-term Debt [Line Items]
Short-term borrowings	$ 416,764	$ 630,066
Maximum borrowing capacity	2,100,000
Collateralized borrowings availability at discount window	900,000	300,000
Federal funds purchased
Short-term Debt [Line Items]
Short-term borrowings	0	0
Maximum borrowing capacity	0	200,000
FHLB advances
Short-term Debt [Line Items]
Short-term borrowings	0	0
Maximum borrowing capacity	0	980,000
Customer funding
Short-term Debt [Line Items]
Short-term borrowings	416,764	630,066
Maximum borrowing capacity	$ 552,547	$ 630,066