Income Per Share (Details Textuals) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended	6 Months Ended
Jul. 01, 2011	Jul. 02, 2010	Jul. 01, 2011	Jul. 02, 2010
Income Loss Per Share (Textuals) [Abstract]
Convertible notes	$ 300		$ 300
Maximum average stock conversion price	$ 59.78		$ 59.78
Percentage of zero coupon convertible notes	5.95%		5.95%
Total additional shares included in the computation of diluted earnings per share	0.4	0.5	0.5	0.5
Stock Issued During Period, Shares, Share-based Compensation	0.2	0.1	0.6	0.3
Repurchase of outstanding shares			0	1
Convertible Notes Due 2013 [Member]
Income Loss Per Share (Textuals) [Abstract]
Additional shares related to Notes due	0.6		0.6
Convertible Notes Due 2033 [Member]
Income Loss Per Share (Textuals) [Abstract]
Percentage of zero coupon convertible notes	3.25%		3.25%
Additional shares related to Notes due	0.5	1.0	0.4	1.0

Income loss per share.

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- Definition

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

+ References

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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

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-Publisher AICPA
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- Definition

Interest rate stated in the contractual debt agreement.

+ References

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-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 02
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- Definition

Additional shares included in the calculation of diluted EPS as a result of the potentially dilutive effect of share based payment arrangements using the treasury stock method.

+ References

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-Publisher FASB
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- Definition

Number of shares (or other type of equity) issued during the period as a result of any equity-based compensation plan other than an employee stock ownership plan (ESOP), net of any shares forfeited. Shares issued could result from the issuance of restricted stock, the exercise of stock options, stock issued under employee stock purchase plans, and/or other employee benefit plans.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
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- Definition

Number of shares that have been repurchased and retired during the period.

+ References

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-Publisher SEC
-Name Regulation S-X (SX)
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- Definition

The sum of dilutive potential common shares or units used in the calculation of the diluted per-share or per-unit computation.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
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-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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