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Summary of the Activity in the Performance-Based Long-Term Incentive Program Since Inception (Detail) - Performance Based Stock Incentive Program - $ / shares
12 Months Ended
Dec. 31, 2016
Dec. 26, 2015
Dec. 27, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Outstanding at beginning of the period, Shares 8,589,114 6,808,964 3,076,292
Granted, Shares 9,635,184 2,745,303 5,289,047
Vested, Shares (161,408) (283,244) (1,246,006)
Forfeited, Shares (4,320,506) (681,909) (310,369)
Outstanding at end of the period, shares 13,742,384 8,589,114 6,808,964
Outstanding at beginning of the period, Weighted Average Grant-Date Price $ 5.95 $ 4.43 $ 4.45
Granted, Weighted Average Grant-Date Price 3.37 9.45 4.55
Vested, Weighted Average Grant-Date Price 4.32 3.98 3.74
Forfeited, Weighted Average Grant-Date Price 5.69 5.67 4.16
Outstanding at end of the period, Weighted Average Grant-Date Price $ 4.66 $ 5.95 $ 4.43