The stated principal amount of the debt instrument at time of issuance, which may vary from the carrying amount because of unamortized premium or discount.

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

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher AICPA

-Name Accounting Principles Board Opinion (APB)

-Number 21

-Paragraph 16, 20

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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

Debt and Credit Agreements (Debt Issuance) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 28, 2012	Dec. 30, 2011	Dec. 31, 2010
Debt Instrument [Line Items]
Pension Contributions	$ 275	$ 0	$ 0
Notes Payable [Member] \| Notes due 2043 at 4 Point 4 Percent [Member]
Debt Instrument [Line Items]
Face amount of debt issued	300
Notes issued, interest rate	4.40%
Notes Payable [Member] \| Notes due 2044 at 4 Point 1 Percent [Member]
Debt Instrument [Line Items]
Face amount of debt issued	800
Notes issued, interest rate	4.10%
Qualified Employer Contributions [Member] \| Pension Plans, Defined Benefit [Member]
Debt Instrument [Line Items]
Employer Contributions	$ 275	$ 0