Stock Option Activity (Detail) (Stock Option, USD $)	12 Months Ended
Jan. 03, 2015	Dec. 28, 2013	Dec. 29, 2012
Stock Option
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options, Outstanding at beginning of period	8,112,000	9,541,000	11,135,000
Options, Exercised	(1,921,000)	(1,415,000)	(1,570,000)
Options, Forfeited		(14,000)	(24,000)
Options, Outstanding at end of period	6,191,000	8,112,000	9,541,000
Options, Exercisable at end of period	6,191,000	4,978,000	3,973,000
Weighted Average Exercise Price, Outstanding at beginning of year	$ 10.89	$ 10.71	$ 10.45
Weighted Average Exercise Price, Exercised	$ 10.94	$ 9.67	$ 8.84
Weighted Average Exercise Price, Forfeitures		$ 10.99	$ 10.88
Weighted Average Exercise Price, Outstanding at end of year	$ 10.88	$ 10.89	$ 10.71

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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.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (c)(1)(iii)

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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- Definition

The number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

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-Subparagraph (c)(1)(iv)(3)

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- Definition

Number of options outstanding, including both vested and non-vested options.

+ References

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- Definition

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

+ References

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- Definition

Weighted average price at which option holders acquired shares when converting their stock options into shares.

+ References

No definition available.

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- Definition

Weighted average price at which grantees could have acquired the underlying shares with respect to stock options that were terminated.

+ References

No definition available.

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- Definition

Number of share options (or share units) exercised during the current period.

+ References

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 04

-Article 3

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