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Fair Value Measurements (Details) (USD $) In Millions, unless otherwise specified	Sep. 28, 2012	Dec. 30, 2011
Fair Value [Member]
Fair Value, by Balance Sheet Grouping
Investments	$ 169	$ 643
Fair Value [Member] | Less than 1 year [Member]
Fair Value, by Balance Sheet Grouping
Investments	35	523
Fair Value [Member] | 1 - 2 years [Member]
Fair Value, by Balance Sheet Grouping
Investments	56	32
Fair Value [Member] | 2 - 5 years [Member]
Fair Value, by Balance Sheet Grouping
Investments	58	73
Fair Value [Member] | Greater than 5 years [Member]
Fair Value, by Balance Sheet Grouping
Investments	20	15
Fair Value [Member] | Certificates of Deposit [Member]
Fair Value, by Balance Sheet Grouping
Investments	0	477
Fair Value [Member] | Corporate Bonds [Member]
Fair Value, by Balance Sheet Grouping
Investments	123	98
Fair Value [Member] | U.S. Treasury Obligations [Member]
Fair Value, by Balance Sheet Grouping
Investments	31	53
Fair Value [Member] | Auction Rate Securities [Member]
Fair Value, by Balance Sheet Grouping
Investments	15	15
Fair Value [Member] | Level 2 [Member]
Fair Value, by Balance Sheet Grouping
Investments	154	628
Long-term Debt Including Current Maturities	10,870	10,708
Fair Value [Member] | Level 2 [Member] | Certificates of Deposit [Member]
Fair Value, by Balance Sheet Grouping
Investments	0	477
Fair Value [Member] | Level 2 [Member] | Corporate Bonds [Member]
Fair Value, by Balance Sheet Grouping
Investments	123	98
Fair Value [Member] | Level 2 [Member] | U.S. Treasury Obligations [Member]
Fair Value, by Balance Sheet Grouping
Investments	31	53
Fair Value [Member] | Level 3 [Member]
Fair Value, by Balance Sheet Grouping
Investments	15	15
Fair Value [Member] | Level 3 [Member] | Auction Rate Securities [Member]
Fair Value, by Balance Sheet Grouping
Investments	15	15
Carrying Value [Member]
Fair Value, by Balance Sheet Grouping
Amortized cost basis of investments	168	643
Carrying Value [Member] | Level 2 [Member]
Fair Value, by Balance Sheet Grouping
Long-term Debt Including Current Maturities	$ 9,063	$ 9,241

X

- Definition

This item represents the cost of debt and equity securities, which are categorized neither as held-to-maturity nor trading, net of adjustments including accretion, amortization, collection of cash, previous other-than-temporary impairments recognized in earnings (less any cumulative-effect adjustments recognized, as defined), and fair value hedge accounting adjustments, if any.

+ References

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

-Publisher FASB

-Name FASB Staff Position (FSP)

-Number FAS115-1/124-1

-Paragraph 7

-Footnote 2

-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 Statement of Financial Accounting Standard (FAS)

-Number 115

-Paragraph 19

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.2)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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X

- Definition

This element represents the portion of the balance sheet assertion valued at fair value by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 825

-SubTopic 10

-Section 50

-Paragraph 10

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=6947722&loc=d3e13433-108611



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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 825

-SubTopic 10

-Section 50

-Paragraph 12

-URI http://asc.fasb.org/extlink&oid=6947722&loc=d3e13476-108611

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X

- Definition

This element represents the portion of the balance sheet assertion valued at fair value by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. This item represents investment securities as of the balance sheet date which may include marketable securities, derivative financial instruments, and investments accounted for under the equity method.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Available-for-Sale Securities

-URI http://asc.fasb.org/extlink&oid=6505594



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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 320

-SubTopic 10

-Section 25

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6379932&loc=d3e22054-111558



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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 115

-Paragraph 13

-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 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Trading Securities

-URI http://asc.fasb.org/extlink&oid=6526789



Reference 5: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 115

-Paragraph 12

-Subparagraph a

-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 6: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Article 7

-Section 03

-Paragraph 1

-Subparagraph a, f, g



Reference 7: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 320

-SubTopic 10

-Section 35

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6956420&loc=d3e24584-111560

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