Segment Information (Total Revenue) (Details) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Total revenue	$ 1,568.1	$ 1,408.8	$ 1,434.3	$ 1,306.5	$ 1,607.3	$ 1,436.2	$ 1,564.9	$ 1,552.1	$ 5,717.7	$ 6,160.5	$ 7,648.0
Operating Segments [Member]
Total revenue									5,670.0	6,065.8	7,347.5
Operating Segments [Member] | EMEA Segment [Member]
Total revenue									2,138.2	2,229.2	2,614.1
Operating Segments [Member] | South Latin America Segment [Member]
Total revenue									2,145.9	2,309.6	3,028.9
Operating Segments [Member] | North Latin America Segment [Member]
Total revenue									829.9	901.0	1,003.6
Operating Segments [Member] | Asia Pacific Segment [Member]
Total revenue									556.0	626.0	700.9
Other operating segments and business activities [Member]
Total revenue									$ 47.7	$ 94.7	$ 300.5