Earnings Per Share - Additional Information (Detail) - shares	3 Months Ended		9 Months Ended
	Sep. 26, 2015	Sep. 27, 2014	Sep. 26, 2015	Sep. 27, 2014
Nonvested Options and Shares
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Shares excluded from computation of diluted earnings per share	3,000,000	9,000,000		10,000,000
Nonvested Options and Shares | Maximum
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Shares excluded from computation of diluted earnings per share			1,000,000
Stock options and restricted stock
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Shares excluded from computation of diluted earnings per share			9,000,000	8,000,000