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Nonpension Postretirement Benefits (Narrative) (Details) (Nonpension Postretirement Benefit Plans, USD $)
Jan. 02, 2013
Nonpension Postretirement Benefit Plans
 
Defined Benefit Plan Disclosure [Line Items]  
Retirees subject to health reimbursement arrangement, minimum age 65 years
Defined benefit plan, life insurance benefit, maximum $ 10,000