Earnings Per Share - Computations of Basic and Diluted Net Earnings Per Share (Detail) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended	6 Months Ended
Jun. 29, 2013	Jun. 30, 2012	Jun. 29, 2013	Jun. 30, 2012
Earnings Per Share [Line Items]
Basic net earnings	$ 85,145	$ 112,299	$ 169,934	$ 257,403
Earnings allocated to participating securities	(419)	(422)	(805)	(830)
Net earnings available to common stockholders	84,726	111,877	169,129	256,573
Average shares outstanding	318,903	317,975	318,796	317,832
Basic net earnings per share	$ 0.27	$ 0.35	$ 0.53	$ 0.81
Diluted net earnings	85,145	112,299	169,934	257,403
Earnings allocated to participating securities	(419)	(422)	(805)	(830)
Net earnings available to common stockholders	$ 84,726	$ 111,877	$ 169,129	$ 256,573
Basic shares outstanding	318,903	317,975	318,796	317,832
Dilutive effect of stock options and other	120	65	138	78
Diluted average shares outstanding	319,023	318,040	318,934	317,910
Diluted net earnings per share	$ 0.27	$ 0.35	$ 0.53	$ 0.81

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Aggregate of earnings distributed and earnings allocated to participating securities under the two-class method to the extent that participating securities may share in earnings as if all of the earnings for the period had been distributed for diluted earnings per share.

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

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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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Net Income or Loss Available to Common Stockholders plus adjustments resulting from the assumption that dilutive convertible securities were converted, options or warrants were exercised, or that other shares were issued upon the satisfaction of certain conditions.

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The sum of dilutive potential common shares or units used in the calculation of the diluted per-share or per-unit computation.

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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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