Stock Options Issued under Stock Option Program Awards (Detail) (USD $) In Millions, except Per Share data, unless otherwise specified	12 Months Ended
Dec. 28, 2012
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Range of Exercise Prices, Lower Limit	$ 13
Range of Exercise Prices, Upper Limit	$ 46
Outstanding - Number of Stock Options (in millions)	9.5
Outstanding - Weighted Average Exercise Price (per unit)	$ 19
Outstanding - Weighted Average Remaining Life	2 years
Exercisable - Number of Stock Options (in millions)	9.2
Exercisable - Weighted Average Exercise Price (per unit)	$ 19
Exercisable - Weighted Average Remaining Life	2 years
Range 2
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Range of Exercise Prices, Lower Limit	$ 13
Range of Exercise Prices, Upper Limit	$ 17
Outstanding - Number of Stock Options (in millions)	5.7
Outstanding - Weighted Average Exercise Price (per unit)	$ 15
Outstanding - Weighted Average Remaining Life	2 years
Exercisable - Number of Stock Options (in millions)	5.8
Exercisable - Weighted Average Exercise Price (per unit)	$ 15
Exercisable - Weighted Average Remaining Life	2 years
Range 3
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Range of Exercise Prices, Lower Limit	$ 18
Range of Exercise Prices, Upper Limit	$ 22
Outstanding - Number of Stock Options (in millions)	2.2
Outstanding - Weighted Average Exercise Price (per unit)	$ 22
Outstanding - Weighted Average Remaining Life	2 years
Exercisable - Number of Stock Options (in millions)	2.2
Exercisable - Weighted Average Exercise Price (per unit)	$ 22
Exercisable - Weighted Average Remaining Life	2 years
Range 4
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Range of Exercise Prices, Lower Limit	$ 23
Range of Exercise Prices, Upper Limit	$ 46
Outstanding - Number of Stock Options (in millions)	1.6
Outstanding - Weighted Average Exercise Price (per unit)	$ 31
Outstanding - Weighted Average Remaining Life	5 years
Exercisable - Number of Stock Options (in millions)	1.2
Exercisable - Weighted Average Exercise Price (per unit)	$ 31
Exercisable - Weighted Average Remaining Life	4 years

The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

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-Section 50

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The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan.

+ References

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Weighted average remaining contractual term for vested portions of options outstanding and currently exercisable or convertible, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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The number of shares reserved for issuance under stock option agreements awarded under the plan that validly exist and are outstanding as of the balance sheet date, including vested options.

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Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan.

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Weighted average remaining contractual term for option awards outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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The floor of a customized range of exercise prices for purposes of disclosing shares potentially issuable under outstanding stock option awards on all stock option plans and other required information pertaining to awards in the customized range.

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The ceiling of a customized range of exercise prices for purposes of disclosing shares potentially issuable under outstanding stock option awards on all stock option plans and other required information pertaining to awards in the customized range.

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