Goodwill (Narrative) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Sep. 30, 2014		Dec. 31, 2014
Goodwill [Line Items]
Goodwill accumulated impairment losses	$ 284.8	[1]	$ 280.9	[1]
Goodwill, net	1,237.3		1,200.7
Latin America Reporting Unit [Member]
Goodwill [Line Items]
Goodwill impairment charge	305.2
Goodwill, net			$ 229.7

[1] Amount is attributable to the Industrial Gases – Americas segment and includes currency translation of $24.3 and $20.4 as of 31 December 2014 and 30 September 2014, respectively.