Nonpension Postretirement and Postemployment Benefits (Assumptions) (Details) (Nonpension Postretirement [Member])	12 Months Ended
	Dec. 29, 2012	Dec. 31, 2011	Jan. 01, 2011
Nonpension Postretirement [Member]
Defined Benefit Plan Disclosure [Line Items]
Discount rate, benefit obligations	3.90%	4.60%	5.30%
Discount rate, annual net periodic benefit cost	4.60%	5.30%	5.70%
Long-term rate of return on plan assets, annual net periodic benefit cost	8.90%	8.90%	8.90%