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Nature of Operations and Basis of Presentation - Additional Information (Detail) - USD ($)
$ in Millions
 12 Months Ended 46 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2017
Dec. 15, 2015
Purchase Commitment, Excluding Long-term Commitment [Line Items]          
Provision for doubtful accounts $ 0.2 $ 0.7 $ 0.2    
Cash 15.7 23.0   $ 15.7  
Other Nonrecurring Expense, Planned Permaent Facility Closure 14.7 1.7      
Business Combination, Consideration Transferred   $ 71.7      
Disposal Group, Not Discontinued Operation, Loss (Gain) on Write-down 4.3        
Oklahoma City sublease expense 3.2        
Other Expense, Planned Permanent Facility Closure 7.2        
Long Island, New York Facility [Member]          
Purchase Commitment, Excluding Long-term Commitment [Line Items]          
Other Nonrecurring Expense, Planned Permaent Facility Closure $ 1.4     $ 24.6  
Common Stock          
Purchase Commitment, Excluding Long-term Commitment [Line Items]          
Stock Repurchase Program, Authorized Amount         $ 100.0
Kroger Company | Sales Revenue, Net [Member] | Consumer Products          
Purchase Commitment, Excluding Long-term Commitment [Line Items]          
Concentration Risk, Percentage 15.30% 13.40% 12.30%