Segments - Reconciliation of Revenue from Segments to Consolidated (Details) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2017 USD ($)	Jun. 30, 2016 USD ($)	Jun. 30, 2017 USD ($) market Segment	Jun. 30, 2016 USD ($)
Segment Reporting, Revenue Reconciling Item [Line Items]
Number of operating segments | Segment			2
Number of end-markets served | market			4
Net sales	$ 1,088.5	$ 1,063.6	$ 2,096.3	$ 2,020.8
Performance Coatings [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Net sales	662.9	630.6	1,249.3	1,175.2
Performance Coatings [Member] | Refinish [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Net sales	421.2	447.3	809.8	827.6
Performance Coatings [Member] | Industrial [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Net sales	241.7	183.3	439.5	347.6
Transportation Coatings [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Net sales	425.6	433.0	847.0	845.6
Transportation Coatings [Member] | Light Vehicle [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Net sales	334.3	344.4	674.3	673.8
Transportation Coatings [Member] | Commercial Vehicle [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Net sales	$ 91.3	$ 88.6	$ 172.7	$ 171.8