Debt and Credit Agreements (Debt Issuance) (Details) (Notes Payable [Member], Note Due 2023 at 3 Point 7 Percent [Member], USD $) In Millions, unless otherwise specified	Dec. 27, 2013
Notes Payable [Member] \| Note Due 2023 at 3 Point 7 Percent [Member]
Debt Instrument [Line Items]
Face amount of debt issued	$ 500
Notes issued, interest rate	3.70%

Face (par) amount of debt instrument at time of issuance.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 835

-SubTopic 30

-Section 45

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28551-108399

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 835

-SubTopic 30

-Section 55

-Paragraph 8

-URI http://asc.fasb.org/extlink&oid=6584090&loc=d3e28878-108400

Name:	us-gaap_DebtInstrumentFaceAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant