Property, Plant And Equipment (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Property, Plant and Equipment [Line Items]
Depreciation expense		$ 80.0	$ 99.1	$ 107.2
Asset impairment charges		49.6	326.4	$ 14.0
ALGERIA [Member]
Property, Plant and Equipment [Line Items]
Asset impairment charges		30.7
Venezuela [Member]
Property, Plant and Equipment [Line Items]
Asset impairment charges	$ 29.3		29.3
BRAZIL [Member]
Property, Plant and Equipment [Line Items]
Asset impairment charges			$ 13.1
Mexico [Member]
Property, Plant and Equipment [Line Items]
Asset impairment charges		$ 14.0