Net Income (Loss) Per Share (Details) (Components of Basic and Diluted Income (Loss) Per Share) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended
Mar. 30, 2013	Mar. 31, 2012
Earnings per Share [Line Items]
Numerator for basic and diluted net loss per share	$ (146)	$ (590)
Net loss	$ (146)	$ (590)
Denominator for basic net income (loss) per share	749	734
Denominator for basic and diluted net loss per share	749	734
Basic net loss per share	$ (0.19)	$ (0.80)
Diluted net loss per share	$ (0.19)	$ (0.80)
5.75% Notes
Earnings per Share [Line Items]
Anti-dilutive shares		24
Stock Options and Restricted Stock Units
Earnings per Share [Line Items]
Anti-dilutive shares	56	32

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.

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+ 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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+ 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

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

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-Appendix A

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+ 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

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-Publisher FASB

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-URI http://asc.fasb.org/extlink&oid=6528421

+ Details