v2.4.0.6
Employee Benefit Plans (Weighted Average Assumptions Used to Determine Benefit Obligations) (Details)
Dec. 31, 2012
Dec. 31, 2011
Pension
   
Discount rate 3.95% 4.57%
Rate of future compensation increases 0.98% 2.14%
Postretirement
   
Discount rate 3.88% 4.56%