Net Income Per Common Share Net Income Per Common Share (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
Mar. 29, 2015	Mar. 30, 2014
Earnings Per Share [Line Items]
Net income for basic and diluted earnings per share	$ 96	$ 15
Average common shares outstanding-basic	851	850
Average common shares outstanding-diluted	899	896
Common Stock
Earnings Per Share [Line Items]
Average common shares outstanding-basic	851	850
Stock options, restricted stock and the global stock purchase plan	48	46
Average common shares outstanding-diluted	899	896

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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

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

-Publisher FASB

-Name Accounting Standards Codification

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-Section 50

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Net income after adjustments for dividends on preferred stock (declared in the period) and/or cumulative preferred stock (accumulated for the period).

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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

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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

-Publisher FASB

-Name Accounting Standards Codification

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