Annual report pursuant to Section 13 and 15(d)

Commitments and Contingencies - Additional Information (Detail)

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Commitments and Contingencies - Additional Information (Detail) (USD $)
In Millions, unless otherwise specified
12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Commitments And Contingencies Disclosure [Abstract]      
Rent expenses $ 94.0 $ 88.7 $ 85.0
Minimum percentage of interest-bearing open purchase arrangements 0.00%    
Maximum percentage of interest-bearing open purchase arrangements 1.00%    
Minimum financing days of interest- bearing open purchase arrangements 30 days    
Maximum financing days of interest- bearing open purchase arrangements 60 days    
Amounts outstanding under interest- bearing open purchase arrangements 69.1 87.7  
Interest expense under interest- bearing open purchase arrangements 3.9 3.8 3.2
Open purchase commitments $ 378.6