Annual report pursuant to Section 13 and 15(d)

Benefit Plans (Details)

v2.4.0.8
Benefit Plans (Details) (USD $)
In Thousands, except Share data, unless otherwise specified
 12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Change in Fair Value of Plan Assets [Abstract]      
Defined Benefit Plan, Fair Value of Plan Assets, Ending Balance $ 649,020 $ 633,617  
Pension Benefits [Member]
      
Components of net periodic benefit expense [Abstract]      
Service cost 25,122 24,869 21,650
Interest cost 30,112 29,215 30,073
Expected return on plan assets (47,716) (45,730) (43,290)
Amortization of transition asset 0 (4) (5)
Amortization of prior service cost (2,883) (5,767) (5,767)
Amortization of gains (losses) 23,044 26,956 23,494
Curtailments (34,613) 0 0
Settlements 8,116 5,405 5,483
Benefit cost 1,182 34,944 31,638
Change in Benefit Obligation [Roll Forward]      
Defined Benefit Plan, Benefit Obligation, Beginning Balance 783,778 656,339  
Service cost 25,122 24,869 21,650
Interest cost 30,112 29,215 30,073
Benefits Paid (14,886) (13,719)  
Settlements (19,363) (10,444)  
Business Combinations and Acquisitions 0 0  
Plan Amendments (13,559) 0  
Curtailments (7,875) 0  
Gross Prescription Drug Subsidy Receipts Received 0 0  
Actuarial Net (Gains) Losses (98,330) 97,518  
Period Increase (Decrease) (98,779) 127,439  
Defined Benefit Plan, Benefit Obligation, Ending Balance 684,999 783,778 656,339
Weighted Average Assumptions Used in Calculating Benefit Obligation [Abstract]      
Discount Rate 3.83% 4.57%  
Rate of Compensation Increase 4.50% 4.50%  
Weighted Average Assumptions Used in Calculating Net Periodic Benefit Cost [Abstract]      
Discount Rate 4.57% 5.35%  
Long-term Return on Assets 8.00% 8.00%  
Compensation Increase 4.50% 4.50%  
Change in Fair Value of Plan Assets [Abstract]      
Defined Benefit Plan, Fair Value of Plan Assets, Beginning Balance 633,617 538,970  
Actual Return on Plan Assets 49,652 43,810  
Contributions by Employer 0 75,000  
Settlements, Plan Assets (19,363) (10,444)  
Business Combinations and Acquisitions 0 0  
Benefits Paid (14,886) (13,719)  
Period Increase (Decrease) 15,403 94,647  
Defined Benefit Plan, Fair Value of Plan Assets, Ending Balance 649,020 633,617 538,970
Estimated Future Benefit Payments [Abstract]      
2013 44,924    
2014 43,610    
2015 41,308    
2016 40,736    
2017 40,216    
2018 through 2022 196,628    
Defined Benefit Plan, Information about Plan Assets [Abstract]      
Shares of Huntington Stock 2,095,304 [1] 5,764,986 [1]  
Dividends on Huntington Stock 992 1,085  
Post Retirement Benefits [Member]
      
Components of net periodic benefit expense [Abstract]      
Service cost 0 0 0
Interest cost 862 1,350 1,618
Expected return on plan assets 0 0 0
Amortization of transition asset 0 0 0
Amortization of prior service cost (1,353) (1,353) (1,354)
Amortization of gains (losses) (600) (332) (423)
Curtailments 0 0 0
Settlements 0 0 0
Benefit cost (1,091) (335) (159)
Change in Benefit Obligation [Roll Forward]      
Defined Benefit Plan, Benefit Obligation, Beginning Balance 27,787 32,851  
Service cost 0 0 0
Interest cost 862 1,350 1,618
Benefits Paid (3,170) (3,850)  
Settlements 0 0  
Business Combinations and Acquisitions 0 0  
Plan Amendments 0 0  
Curtailments 0 0  
Gross Prescription Drug Subsidy Receipts Received 564 740  
Actuarial Net (Gains) Losses (374) (3,304)  
Period Increase (Decrease) (2,118) (5,064)  
Defined Benefit Plan, Benefit Obligation, Ending Balance 25,669 27,787 32,851
Weighted Average Assumptions Used in Calculating Benefit Obligation [Abstract]      
Discount Rate 3.28% 4.34%  
Weighted Average Assumptions Used in Calculating Net Periodic Benefit Cost [Abstract]      
Discount Rate 4.34% 5.00%  
Change in Fair Value of Plan Assets [Abstract]      
Benefits Paid (3,170) (3,850)  
Estimated Future Benefit Payments [Abstract]      
2013   2,919  
2014   2,680  
2015   2,437  
2016   2,228  
2017   2,029  
2018 through 2022   8,470  
Defined Contribution Pension [Member]
      
Defined Benefit Plan, Information about Plan Assets [Abstract]      
Market Value-Amount of Huntington common stock 131,476 95,160  
Shares of Huntington Stock 13,624,429 14,892,094  
Dividends on Huntington Stock $ 2,567 $ 2,414  
[1] The Plan has acquired and held Huntington common stock in compliance at all times with Section 407 of the Employee Retirement Income Security Act of 1978.