XML 150 R137.htm IDEA: XBRL DOCUMENT v3.22.0.1
Regulatory Matters - Additional Information (Detail) - USD ($)
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]    
Potential maximum dividends without prior regulatory approval $ 161,900  
Average required reserve balance in Federal Reserve Bank $ 0 $ 0
Percentage of Risk-weighted assets in bank holding companies in total capital 8  
Common equity tier 1, minimum value 4.50%  
Common equity tier 1, well capitalized 6.50%  
Percentage of Risk-weighted assets in banking subsidiaries 6.00%  
Percentage of well-capitalized levels of Tier 1 risk-based capital 8.00%  
Percentage of well-capitalized levels of total risk-based capital 10  
Provision of the Dodd-Frank $ 15,000,000,000  
Percentage of common equity tier 1 7.00%  
Percentage of tier 1 risk based capital 8.50%  
Percentage of total risk-based capital 10.50%  
Junior subordinated debt $ 132,860,000  
Trust preferred securities included in Tier Two capital 130,000,000.0  
Assets $ 16,927,125,000 16,425,610,000
Current Expected Losses Methodology for Allowances [Member]    
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]    
CECL on regulatory capital adoption delay period 2 years  
CECL on regulatory capital transition period after delay 3 years  
CECL on regulatory capital transition period 5 years  
Minimum [Member]    
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]    
Minimum Tier 1 leverage ratio 4  
Assets $ 15,000,000,000 $ 15,000,000,000
Minimum [Member] | Current Expected Losses Methodology for Allowances [Member]    
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]    
Regulatory capital levels required capital benefits to be well capitalized 0.20%  
Maximum [Member] | Current Expected Losses Methodology for Allowances [Member]    
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]    
Regulatory capital levels required capital benefits to be well capitalized 0.40%  
Wesbanco Bank, Inc [Member]    
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]    
Common equity tier 1, well capitalized 6.50%  
Percentage of well-capitalized levels of Tier 1 leverage capital 5  
Junior Subordinated Debt [Member]    
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]    
Junior subordinated debt $ 132,900,000