Net (Loss) Earnings Per Share (Calculation Of Net (Loss) Earnings Per Share) (Details) (USD $) In Millions, except Per Share data	3 Months Ended	6 Months Ended
Jul. 01, 2011	Jul. 02, 2010	Jul. 01, 2011	Jul. 02, 2010
Net (Loss) Earnings Per Share
Net (loss) earnings	$ (20.1)	$ 64.1	$ (44.2)	$ 109.7
Denominator for basic net (loss) earnings per share - weighted average shares outstanding	364.6	385.4	363.8	385.0
Employee stock options and restricted and performance stock awards		4.5		4.5
Denominator for diluted net (loss) earnings per share - adjusted weighted average shares outstanding and assumed conversions	364.6	389.9	363.8	389.5
Net (loss) earnings per share, basic	$ (0.06)	$ 0.17	$ (0.12)	$ 0.28
Net (loss) earnings per share, diluted	$ (0.06)	$ 0.16	$ (0.12)	$ 0.28
Anti-dilutive employee equity-based awards, excluded	25.7	18.9	25.2	19.2

Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Antidilution
-URI http://asc.fasb.org/extlink&oid=6505113

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-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
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-Name Emerging Issues Task Force (EITF)
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Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Diluted Earnings Per Share
-URI http://asc.fasb.org/extlink&oid=6510752

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Contingent Stock Agreement
-URI http://asc.fasb.org/extlink&oid=6508534

+ Details

- Definition

The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period.

+ References

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-Publisher SEC
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-Name Accounting Standards Codification
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-Topic 260
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+ Details

- Definition

The amount of net income (loss) for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period.

+ References+ Details

- Definition

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

+ References

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-Name Accounting Research Bulletin (ARB)
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-Appendix A

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Reference 9: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Other Comprehensive Income
-URI http://asc.fasb.org/extlink&oid=6519514

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Reference 12: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
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-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
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-Section 03
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-Name Statement of Financial Accounting Standard (FAS)
-Number 95
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-Name Regulation S-X (SX)
-Number 210
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+ Details

- Definition

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

+ References+ Details

- Definition

The average number of shares or units issued and outstanding that are used in calculating diluted EPS or earnings per unit (EPU), determined based on the timing of issuance of shares or units in the period.

+ References+ Details

- Definition

Number of [basic] shares or units, after adjustment for contingently issuable shares or units and other shares or units not deemed outstanding, determined by relating the portion of time within a reporting period that common shares or units have been outstanding to the total time in that period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Weighted-Average Number of Common Shares Outstanding
-URI http://asc.fasb.org/extlink&oid=6528421

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-Name Emerging Issues Task Force (EITF)
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+ Details