Basis of Presentation - Income Taxes and Noncontrolling Interest (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Provision for/(benefit from) income taxes	$ (329.0)	$ (983.0)
Effective tax rate (as a percent)	(23.10%)	(95.10%)
Discrete tax charge related to foreign audit activity	$ 99.0
Other (income) and expense
Noncontrolling interest amounts, net of tax	3.6	$ 1.3
Accounting Standards Update 2016-16, Intra-Entity Transfers of Assets Other Than Inventory | Early adoption
Provision for/(benefit from) income taxes	$ (582.0)