Earnings Per Share - Additional Information (Detail) - shares shares in Millions	3 Months Ended		6 Months Ended
	Jun. 25, 2016	Jun. 27, 2015	Jun. 25, 2016	Jun. 27, 2015
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		9
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	7		8
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		1