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Mergers and Acquisitions - Summary of Preliminary Purchase Price of PFC Acquisition and Goodwill (Details) - USD ($) $ in Thousands	Feb. 28, 2025	Mar. 31, 2025	Dec. 31, 2024
Business Acquisition [Line Items]
Goodwill recognized		$ 1,600,000	$ 1,100,000
Premier Financial Corporation [Member]
Business Acquisition [Line Items]
Fair value of Wesbanco shares issued	$ 1,007,845
Cash consideration for outstanding PFC shares	138
Total purchase price	1,007,983
Tangible assets acquired	7,733,099
Core deposit and other intangible assets acquired	151,514
Liabilities assumed	(7,560,522)
Net cash received in the acquisition	200,495
Fair value of net assets acquired	524,586
Goodwill recognized	$ 483,397	$ 483,400