Basic and Diluted Earnings per Common Share (Detail) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended	6 Months Ended
Jul. 12, 2014	Jul. 13, 2013	Jul. 12, 2014	Jul. 13, 2013
Earnings Per Share [Abstract]
Net income	$ 42,064	$ 46,460	$ 103,130	$ 158,486
Basic weighted average shares outstanding for common stock	209,639	207,837	209,354	207,455
Basic earnings per common share	$ 0.20	$ 0.22	$ 0.49	$ 0.76
Basic weighted average shares outstanding for common stock	209,639	207,837	209,354	207,455
Add: Shares of common stock assumed issued upon exercise of stock options and vesting of restricted stock	3,280	4,055	3,552	3,989
Diluted weighted average shares outstanding for common stock	212,919	211,892	212,906	211,444
Diluted earnings per common share	$ 0.20	$ 0.22	$ 0.48	$ 0.75

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

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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.

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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.

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

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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.

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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.

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