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Income Taxes (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Income Taxes
Effective tax rate (as a percent)	(71.20%)	97.20%	(18.60%)	49.70%
Federal statutory rate (as a percent)	35.00%		35.00%
Effective tax rate reconciliation impact of non-deductible research and development expenses			$ 11.7
Tax benefit related to non-controlling interests	$ 6.9		15.3
Tax benefit related to valuation allowances	38.4		38.4
Valuation allowances adjustments related to non deductible research and development credits	7.2		7.2
Discrete expense, net of related valuation allowance			(3.8)
Undistributed earnings related to foreign subsidiaries	97.3		$ 97.3
United Kingdom
Income Taxes
Valuation allowances	26.5
Australia
Income Taxes
Valuation allowances	$ 11.9

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Amount of deferred tax liability not recognized because of the exceptions to comprehensive recognition of deferred taxes related to undistributed earnings of foreign subsidiaries.

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