Quarterly report pursuant to Section 13 or 15(d)

Revenue (Details)

v3.10.0.1
Revenue (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2018
Jun. 30, 2018
Disaggregation of Revenue [Line Items]    
Revenue, Performance Obligation, Description of Payment Terms   30
Net trade sales $ 306.0 $ 563.9
United States    
Disaggregation of Revenue [Line Items]    
Net trade sales 256.4 475.8
Canada    
Disaggregation of Revenue [Line Items]    
Net trade sales 19.5 35.8
Other    
Disaggregation of Revenue [Line Items]    
Net trade sales $ 30.1 $ 52.3