Annual report pursuant to Section 13 and 15(d)

Shareholder's Equity (Details)

Shareholder's Equity (Details) (USD $)
In Thousands, except Share data in Millions, unless otherwise specified
12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2010
Shareholder's Equity (Textuals) [Abstract]        
Term to exercise warrants (years)       10 years
Purchase of common stock shares 35.7us-gaap_StockRepurchasedAndRetiredDuringPeriodShares      
Purchase of common stock shares, value $ (334,429)us-gaap_StockRepurchasedAndRetiredDuringPeriodValue $ (124,995)us-gaap_StockRepurchasedAndRetiredDuringPeriodValue $ (148,881)us-gaap_StockRepurchasedAndRetiredDuringPeriodValue  
Purchase of common stock, average price per share $ 9.37hban_CommonStockRepurchasedAndRetiredAverageCostPerShare