Annual report pursuant to Section 13 and 15(d)

Goodwill and Other Intangible Assets (Details Textuals)

v2.4.1.9
Goodwill and Other Intangible Assets (Details Textuals) (USD $)
Dec. 31, 2014
Dec. 31, 2013
Mar. 02, 2014
Sep. 12, 2014
Business Acquisition Line Items        
Goodwill $ 522,541,000us-gaap_Goodwill $ 444,268,000us-gaap_Goodwill    
Camco Financial [Member]        
Business Acquisition Line Items        
Goodwill     64,200,000us-gaap_Goodwill
/ us-gaap_BusinessAcquisitionAxis
= hban_CamcoFinancialMember 		 
Bank of America Branches [Member]        
Business Acquisition Line Items        
Goodwill       $ 17,100,000us-gaap_Goodwill
/ us-gaap_BusinessAcquisitionAxis
= hban_BankOfAmericaBranchesMember