Allocation of Pension Plan Assets by Category (Detail) - North America	Dec. 26, 2015	Dec. 27, 2014
Defined Benefit Plan Disclosure [Line Items]
Percentage of Plan Assets	100.00%	100.00%
Money Market Funds
Defined Benefit Plan Disclosure [Line Items]
Percentage of Plan Assets	2.00%	2.00%
US Equity Securities
Defined Benefit Plan Disclosure [Line Items]
Percentage of Plan Assets	9.00%	8.00%
Fixed Income Securities
Defined Benefit Plan Disclosure [Line Items]
Percentage of Plan Assets	57.00%	64.00%
Mutual Funds
Defined Benefit Plan Disclosure [Line Items]
Percentage of Plan Assets	31.00%	25.00%
Other
Defined Benefit Plan Disclosure [Line Items]
Percentage of Plan Assets	1.00%	1.00%