Other Borrowed Funds (Details) - USD ($) $ in Millions	Mar. 31, 2024	Dec. 31, 2023
Debt Disclosure [Abstract]
Other Short-term Borrowings	$ 2,342.0	$ 2,603.0
Short-Term Debt [Line Items]
Other Short-term Borrowings	2,342.0	2,603.0
Average fixed rate borrowings in tenors up to one-week
Debt Disclosure [Abstract]
Other Short-term Borrowings	$ 592.0	$ 2,603.0
Fixed-to-floating rate (percent)	5.52%	5.52%
Short-Term Debt [Line Items]
Fixed-to-floating rate (percent)	5.52%	5.52%
Other Short-term Borrowings	$ 592.0	$ 2,603.0
Average fixed rate borrowings in tenors of 12-months
Debt Disclosure [Abstract]
Other Short-term Borrowings	$ 1,750.0
Fixed-to-floating rate (percent)	4.86%
Short-Term Debt [Line Items]
Fixed-to-floating rate (percent)	4.86%
Other Short-term Borrowings	$ 1,750.0