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Assumptions Used in Calculating Funded Status (Detail) - Europe
12 Months Ended
Dec. 26, 2015
Dec. 27, 2014
Dec. 28, 2013
Defined Benefit Plan Disclosure [Line Items]      
Expected long-term rate of return on plan assets 4.78% 5.55% 6.33%
Discount rate 3.90% 3.80% 4.60%
Inflation 3.00% 3.10% 3.40%