Goodwill (Schedule of Goodwill) (Details) $ in Millions	12 Months Ended
	Dec. 31, 2019 USD ($)
Goodwill [Roll Forward]
Gross balance at period start	$ 176.7
Accumulated impairments at period start	(89.3)
Net balance at period start	87.4
Foreign exchange	(1.2)
Gross balance at period end	175.5
Net balance at period end	86.2
Europe, Middle East & Africa
Goodwill [Roll Forward]
Gross balance at period start	24.9
Accumulated impairments at period start	(6.9)
Net balance at period start	18.0
Foreign exchange	(0.6)
Gross balance at period end	24.3
Net balance at period end	17.4
South Latin America
Goodwill [Roll Forward]
Gross balance at period start	66.8
Accumulated impairments at period start	0.0
Net balance at period start	66.8
Foreign exchange	(0.6)
Gross balance at period end	66.2
Net balance at period end	66.2
Asia Pacific
Goodwill [Roll Forward]
Gross balance at period start	85.0
Accumulated impairments at period start	(82.4)
Net balance at period start	2.6
Foreign exchange	0.0
Gross balance at period end	85.0
Net balance at period end	$ 2.6