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Acquisitions (Aimia Acquisition) - Additional Information (Detail) - Aimia Foods Holdings Limited [Member]
£ in Millions, $ in Millions
1 Months Ended 3 Months Ended 12 Months Ended
Sep. 30, 2014
USD ($)
Sep. 30, 2014
GBP (£)
Sep. 30, 2014
USD ($)
Sep. 30, 2014
GBP (£)
May. 31, 2014
USD ($)
May. 31, 2014
GBP (£)
Jan. 02, 2016
USD ($)
Jan. 02, 2016
GBP (£)
Jul. 04, 2015
USD ($)
Jul. 04, 2015
GBP (£)
Jan. 02, 2016
USD ($)
May. 31, 2014
GBP (£)
Business Acquisition [Line Items]                        
Acquisition Date                     May 30, 2014  
Percentage of share capital acquired         100.00%             100.00%
Contingent consideration maximum payable amount         $ 23.6             £ 16.0
Aggregate purchase price         87.6 £ 52.1            
Deferred consideration $ 33.5 £ 19.9 $ 33.5 £ 19.9 33.5              
Fair Value of Contingent Consideration         $ 17.9   $ 15.6       $ 15.6 10.6
Change in fair value of contingent consideration             0.2 £ 0.1 $ 0.6 £ 0.4    
Acquisition related costs                     2.2  
Income Approach Valuation Technique [Member]                        
Business Acquisition [Line Items]                        
Fair Value of Contingent Consideration             $ 15.6       $ 15.6 £ 10.6