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Property and Equipment - Summary of Cost and Accumulated Depreciation of Property and Equipment under Capital Leases (Detail) - USD ($)
$ in Millions
Dec. 31, 2016
Jan. 02, 2016
Capital Leased Assets [Line Items]    
Accumulated depreciation $ (12.3) $ (11.0)
Net book value 8.2 9.1
Buildings and Improvements [Member]    
Capital Leased Assets [Line Items]    
Capital leases, gross $ 20.5 $ 20.1