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Property and Equipment - Summary of Cost and Accumulated Depreciation of Property and Equipment under Capital Leases (Detail) (USD $)
In Millions, unless otherwise specified
Jan. 03, 2015
Dec. 28, 2013
Capital Leased Assets [Line Items]    
Accumulated depreciation $ (9.7)us-gaap_CapitalLeasesLesseeBalanceSheetAssetsByMajorClassAccumulatedDeprecation $ (10.1)us-gaap_CapitalLeasesLesseeBalanceSheetAssetsByMajorClassAccumulatedDeprecation
Net book value 10.5us-gaap_CapitalLeasesBalanceSheetAssetsByMajorClassNet 13.4us-gaap_CapitalLeasesBalanceSheetAssetsByMajorClassNet
Buildings and Improvements [Member]    
Capital Leased Assets [Line Items]    
Capital leases, gross $ 20.2us-gaap_CapitalLeasedAssetsGross
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_BuildingImprovementsMember
$ 23.5us-gaap_CapitalLeasedAssetsGross
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_BuildingImprovementsMember