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Pension and Postretirement Plans (Key Assumptions - Cost) (Details 6) (Periodic Cost [Member])
12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Jan. 02, 2011
Pension Plans [Member]
     
Defined Benefit Plan Disclosure [Line Items]      
Discount rate 4.70% 5.60% 6.00%
Expected return on plan assets 6.50% 6.50% 6.50%
Rate of compensation increase 4.00% 4.00% 4.00%
Supplemental Executive Retirement Plan (SERP) [Member]
     
Defined Benefit Plan Disclosure [Line Items]      
Discount rate 4.70% 5.60% 6.00%
Rate of compensation increase 4.00% 4.00% 4.00%