Supplemental Balance Sheet Information, Narrative (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	Dec. 31, 2016
Disaggregation of Revenue [Line Items]
Financing Liability, Indirect Taxes		$ 19.0
Long Term Investment Receivables, Indirect taxes	$ 118.0								$ 118.0
Proceeds from monetization of COFINS tax credits		19.0							19.4	$ 0.0	$ 0.0
Income taxes									103.1	129.9	100.7
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
Other income (expense), net									94.2	(7.1)	$ (34.6)	$ (172.9)
Agreement To Sale Tax Credits		$ 80.0
Repurchase Term		3 years
Brazil IPI tax release
Disaggregation of Revenue [Line Items]
Income taxes									23.0
Revenue									67.7	$ 168.4
Other income (expense), net									$ 50.0