Revenue (Details) $ in Millions	3 Months Ended
	Mar. 31, 2018 USD ($)
Disaggregation Of Revenue [Line Items]
Revenue from contracts with customers	$ 355.2
Performance obligation	0.0
Accrued sales returns	1.9
Service Revenue
Disaggregation Of Revenue [Line Items]
Revenue from contracts with customers	0.0
United States | MRO Products and Industrial Supplies
Disaggregation Of Revenue [Line Items]
Revenue from contracts with customers	202.0
Canada | MRO Products and Industrial Supplies
Disaggregation Of Revenue [Line Items]
Revenue from contracts with customers	10.2
France | Technology Products
Disaggregation Of Revenue [Line Items]
Revenue from contracts with customers	136.9
Other Europe | Technology Products
Disaggregation Of Revenue [Line Items]
Revenue from contracts with customers	$ 6.1
Sales Revenue, Net | Product Concentration Risk | Service Revenue
Disaggregation Of Revenue [Line Items]
Service revenue, percentage of revenue	1.00%