Noncontrolling Interests (Narrative) (Details) - USD ($) $ in Millions	1 Months Ended		3 Months Ended								12 Months Ended
	Sep. 30, 2015	Jul. 31, 2015	Sep. 30, 2014	[1]	Jun. 30, 2014	[1]	Mar. 31, 2014	[1]	Dec. 31, 2013	[1]	Sep. 30, 2015	Sep. 30, 2014		Sep. 30, 2013	Jun. 30, 2015
Noncontrolling Interest [Line Items]
Payment for repurchase of redeemable noncontrolling interest											$ 277.9	$ 0.0
Goodwill and intangible asset impairment charge			$ 310.1		$ 0.0		$ 0.0		$ 0.0		$ 0.0	310.1	[1]	$ 0.0
Redeemable Noncontrolling Interest [Member]
Noncontrolling Interest [Line Items]
Goodwill and intangible asset impairment charge												$ 32.5
Indura [Member]
Noncontrolling Interest [Line Items]
Minority interest ownership percentage under put option															30.50%
Percentage equity interest purchased		30.50%
Payment for repurchase of redeemable noncontrolling interest		$ 277.9
Sale of Stock, Percentage of Ownership after Transaction	97.80%

[1] For additional information, see Note 10, Goodwill, and Note 11, Intangible Assets.