Deposits (Tables)

12 Months Ended

Dec. 31, 2023

Banking And Thrifts [Abstract]

Escrow, Mortgage Subserving, and Other Deposits

Deposit accounts are summarized as follows:

	December 31,
(dollars in millions)	2023			2022
Escrow deposits:
Interest bearing	$	2,063.0		$	2,542.1
Non-interest bearing		4,531.3			2,077.3
		6,594.3			4,619.4
Mortgage subservicing deposits:
Interest bearing		485.7			712.9
Other deposits		228.0			187.4
	$	7,308.0		$	5,519.7
Weighted-average interest rate:
Interest bearing deposit accounts		1.52	%		0.50	%