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 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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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.

Reference 2: 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 3: 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

Debt (Long-Term Debt Footnote A) (Details) (USD $) In Millions, unless otherwise specified			1 Months Ended	12 Months Ended
	Mar. 31, 2001	Mar. 31, 2001 Twenty-Year 7.45% U.S. Dollar Debentures Due 2031 [Member]	May 30, 2009 Ten-Year 6.6% U.S. Dollar Notes Due 2011 [Member] yr	Jan. 02, 2010 Ten-Year 6.6% U.S. Dollar Notes Due 2011 [Member]	Dec. 29, 2007 Ten-Year 6.6% U.S. Dollar Notes Due 2011 [Member]
Debt instrument, face amount	$ 4,600
Debt Instrument term, in years			10
Debt instrument, effective interest rate		7.62%
Amount of notes redeemed				482	72
Debt instrument, convertible, interest expense				35
Accelerated losses on interest rate swaps previously recorded in AOCI				3
Notional amounts of interest rate swaps			$ 400