Summary of Stock Option Activity Awards (Detail) - $ / shares	12 Months Ended
	Dec. 26, 2015	Dec. 27, 2014	Dec. 28, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Outstanding at beginning of year, Shares	8,602,626	22,702,534	12,578,071
Granted, Shares	0	0	2,003,000
Forfeited, Shares	(574,967)	(1,323,664)	(2,072,560)
Exercised, Shares	(2,248,062)	(12,776,244)	(2,948,328)
Outstanding at end of year, Shares	5,779,597	8,602,626	22,702,534
Outstanding at beginning of year, Weighted Average Exercise Price	$ 4.53	$ 4.48	$ 5.25
Granted, Weighted Average Exercise Price			5.24
Forfeited, Weighted Average Exercise Price	9.29	10.46	8.83
Exercised, Weighted Average Exercise Price	3.34	3.83	1.40
Outstanding at end of year, Weighted Average Exercise Price	$ 4.53	$ 4.53	$ 4.48
Assumed-Merger
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted, Shares			13,142,351
Granted, Weighted Average Exercise Price			$ 3.62