Debt and Credit Agreements (Credit Facilities and Receivable Securitization Facility) (Details) (USD $)	Dec. 28, 2012
Accounts Receivable Securitization Credit Facility [Member]
Line of Credit Facility [Line Item]
Line of credit facility, current borrowing capacity	$ 250,000,000
Line of credit facility, amount outstanding	0
Unsecured Revolving Credit Facility, Current [Member]
Line of Credit Facility [Line Item]
Line of credit facility, current borrowing capacity	1,000,000,000
Line of credit facility, amount outstanding	$ 0