FHLB and Other Short-Term Borrowings - Additional Information (Detail) - USD ($)	Dec. 31, 2023	Dec. 31, 2022
Federal Home Loan Bank Advances By Branch Of FHLB Bank And Other Borrowings [Line Items]
Borrowings	$ 1,350,000,000	$ 705,000,000
Weighted-average interest rate	5.40%	4.22%
FHLB stock owned by WesBanco pledged as collateral on these advances	$ 62,000,000	$ 36,200,000
Remaining maximum borrowing capacity	3,400,000,000	3,600,000,000
Other short-term borrowings	105,893,000	135,069,000
Securities sold under agreements to repurchase	105,900,000	135,100,000
Federal funds purchased	$ 0	$ 0
Securities Sold under Agreements to Repurchase [Member]
Federal Home Loan Bank Advances By Branch Of FHLB Bank And Other Borrowings [Line Items]
Securities sold under agreements to repurchase, weighted average interest rate	2.20%	0.39%