Segment Information (Total Revenue) (Details) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Segment Reporting Information [Line Items]
Revenue	$ 1,213.5	$ 1,188.0	$ 1,174.8	$ 1,186.9	$ 1,401.7	$ 1,424.2	$ 1,351.9	$ 1,393.5	$ 4,763.2	$ 5,571.3	$ 5,715.6
Operating Segments
Segment Reporting Information [Line Items]
Revenue									4,745.0	5,520.8	5,632.6
Operating Segments | Europe, Middle East & Africa
Segment Reporting Information [Line Items]
Revenue									1,794.1	2,093.8	2,126.5
Operating Segments | South Latin America
Segment Reporting Information [Line Items]
Revenue									1,762.7	2,146.9	2,222.4
Operating Segments | North Latin America
Segment Reporting Information [Line Items]
Revenue									751.3	809.3	811.8
Operating Segments | Asia Pacific
Segment Reporting Information [Line Items]
Revenue									436.9	470.8	471.9
Other operating segments and business activities(3)
Segment Reporting Information [Line Items]
Revenue									$ 18.2	$ 50.5	$ 83.0