Debt (Details) (USD $) In Millions, except Per Share data	6 Months Ended
Jul. 02, 2011	May 05, 2009
Additional Debt (Textuals) [Abstract]
Stock Price on July 2, 2011	$ 23.94
Amount if converted value in excess of principal	$ 494
Potential incremental share settlement in excess of the face amount of the notes that could be issued upon conversion of convertible notes, after giving effect to the exercise of the call options and warrants	15.6
Potential incremental cash payment in excess of the face amount of the notes upon conversion of convertible notes, after giving effect to the exercise of the call options and warrants	374
Number of days for which common stock price exceeded the threshold price during 30 consecutive trading days	20 days
Period of consecutive trading days during which stock price was measured for having exceeded the conversion threshold price	30 days
Date through which the notes are convertible at the holder's option	Sep. 30, 2011
4.5% Convertible Notes [Member]
Debt (Textuals) [Abstract]
Issued Convertible Notes		$ 600
Maturity date	May 01, 2013
Conversion threshold price for convertible notes	$ 17.06

Additional Debt.

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- Definition

Debt.

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- Definition

Number of days for which common stock price exceeded the threshold price during period of consecutive trading days.

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Period of consecutive trading days during which stock price was measured for having exceeded the conversion threshold price.

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- Definition

The incremental cash payment in excess of the face amount of the notes upon conversion of convertible notes, after giving effect to the exercise of the call options and warrants, if the Company elects to settle the debt obligation solely by cash payment.

+ Details

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- Definition

The incremental share settlement in excess of the face amount of the notes that could be issued upon conversion of convertible notes, after giving effect to the exercise of the call options and warrants, if the Company elects to settle the debt obligation solely through the issuance of shares of common stock.

+ Details

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- Definition

Stock Price on Specific Date.

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- Definition

The expiration, mandatory redemption, or due date, day, month and year (YYYY-MM-DD), of the financial instrument issued in exchange for the original debt being converted in a noncash (or part noncash) transaction. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 95
-Paragraph 32
-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 230
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4304-108586

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-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 50
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4332-108586

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- Definition

The price per share of the conversion feature embedded in the debt instrument.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
-Section 50
-Paragraph 5
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=6928298&loc=SL6031898-161870

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-Name FASB Staff Position (FSP)
-Number APB14-1
-Paragraph 32
-Subparagraph b
-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.

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- Definition

The amount by which the convertible debt's if-converted value exceeds its principle amount at the balance sheet date, regardless of whether the instrument is currently convertible. This element applies to public companies only.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
-Section 50
-Paragraph 5
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=6928298&loc=SL6031898-161870

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-Publisher FASB
-Name FASB Staff Position (FSP)
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-Paragraph 32
-Subparagraph c
-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.

+ Details

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- Definition

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.

+ References

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

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-Publisher FASB
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-SubTopic 30
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-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=6584090&loc=d3e28878-108400

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- Definition

Date when the debt instrument is scheduled to be fully repaid, which may be presented in a variety of ways (year, month and year, day, month and year, quarter, etc.).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 129
-Paragraph 2, 4
-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 SEC
-Name Regulation S-X (SX)
-Number 210
-Section 02
-Paragraph 22
-Article 5

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22(a)(2))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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