Equity Affiliates (Narratives) (Details) - USD ($) $ in Millions		3 Months Ended
		Dec. 31, 2015	Dec. 31, 2014
Schedule of Equity Method Investment [Line Items]
Other income (expense), net		$ 5.9	$ 8.3
Reclassification Out Of Accumulated Other Comprehensive Income [Member] | Currency Translation Adjustment [Member]
Schedule of Equity Method Investment [Line Items]
Other income (expense), net	[1]	(2.4)	$ 0.0
Daido Air Products Electronics, Inc. [Member]
Schedule of Equity Method Investment [Line Items]
Equity method investment, sale proceeds		15.9
Equity method investment, gain on sale		0.7
Equity method investment, carrying value at time of sale		12.8
Daido Air Products Electronics, Inc. [Member] | Equity Method Investments [Member] | Reclassification Out Of Accumulated Other Comprehensive Income [Member] | Currency Translation Adjustment [Member]
Schedule of Equity Method Investment [Line Items]
Other income (expense), net		$ (2.4)
Jazan Gas Projects Company [Member]
Schedule of Equity Method Investment [Line Items]
Ownership interest percentage acquired		25.00%
Obligation for future contribution to equity affiliate		$ 94.3
Noncash transaction, increase to investment		26.8
Future payments to acquire equity method investments		$ 100.0

[1] The impact is reflected in Other income (expense), net and relates to the sale of an equity affiliate. Refer to Note 7, Equity Affiliates.