Other Operating Income (Expense) (Details) - USD ($) $ in Millions	3 Months Ended					12 Months Ended
	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Sep. 30, 2014	Mar. 31, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Effect of Fourth Quarter Events [Line Items]
Foreign currency transaction losses			$ (18.0)		$ (121.9)	$ (26.8)	$ (127.2)	$ (18.1)
Hedge gains (losses)						2.9	1.4	(0.4)
Gains on sale of property and equity investment (b)						0.9	44.9	2.4
Argentina conversion losses						(7.1)	(3.6)	(2.1)
Impairment losses (c)						37.2	3.3	2.9
Share in earnings of equity affiliates						0.5	4.3	6.7
Royalty income						(2.1)	(1.5)	(1.9)
Gains (losses) on business acquisitions and dispositions						(6.3)	0.0	2.8
Other						1.6	1.0	0.3
Other operating income (expense)						(69.4)	(81.0)	(9.4)
Impairment losses (c)						(35.3)	0.0	0.0
Peruvian CIT Business
Effect of Fourth Quarter Events [Line Items]
Gains (losses) on business acquisitions and dispositions				$ 44.3			44.3
Venezuela
Effect of Fourth Quarter Events [Line Items]
Foreign currency transaction losses						(18.1)
Impairment losses (c)	$ (0.8)	$ (34.5)				$ (35.3)
Venezuela | Venezuelan Bolivar Fuerte
Effect of Fourth Quarter Events [Line Items]
Foreign currency transaction losses							$ (121.6)	$ (13.4)