Segment Information (Total Assets) (Details) - USD ($) $ in Millions	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Segment Reporting Information [Line Items]
Total assets	$ 3,010.0	$ 3,697.9	$ 3,418.9
Total from discontinued operations	0.0	0.0	1.3
Operating Segments
Segment Reporting Information [Line Items]
Total assets	2,651.5	3,078.1	2,891.8
Operating Segments | Europe, Middle East & Africa
Segment Reporting Information [Line Items]
Total assets	1,048.8	1,190.5	949.3
Operating Segments | South Latin America
Segment Reporting Information [Line Items]
Total assets	1,001.0	1,273.6	1,306.3
Operating Segments | North Latin America
Segment Reporting Information [Line Items]
Total assets	329.7	335.8	344.4
Operating Segments | Asia Pacific
Segment Reporting Information [Line Items]
Total assets	272.0	278.2	291.8
Other operating segments and business activities
Segment Reporting Information [Line Items]
Total assets	5.4	18.9	6.5
Global
Segment Reporting Information [Line Items]
Total assets	$ 353.1	$ 600.9	$ 519.3