Segment Information, Revenues and Property, Plant, and Equipment by Geographic Region (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues		$ 2,375.4	$ 1,939.4	$ 2,126.9
Property, plant and equipment, net		363.2	358.4	340.8
Total Americas [Member] | Reportable Geographical Components [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues		1,210.0	802.0	1,005.9
Property, plant and equipment, net		205.2	205.1	193.0
United States [Member] | Reportable Geographical Components [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues		1,048.5	695.8	865.7
Property, plant and equipment, net		198.4	197.9	187.2
Other Americas [Member] | Reportable Geographical Components [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues		161.5	106.2	140.2
Property, plant and equipment, net		6.8	7.2	5.8
EMEA [Member] | Reportable Geographical Components [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	[1]	861.1	800.2	751.3
Property, plant and equipment, net	[1]	132.3	125.3	116.3
Asia Pacific [Member] | Reportable Geographical Components [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues		304.3	337.2	369.7
Property, plant and equipment, net		$ 25.7	$ 28.0	$ 31.5

[1] Europe, Middle East, and Africa ("EMEA")