Commitments and Contingencies (Narrative) (Details) - USD ($) $ in Millions	Sep. 30, 2015	Sep. 30, 2014
Letters of Credit Outstanding, Amount	$ 8.0	$ 11.0
Purchase Obligation, Total	$ 6.3

Minimum amount of purchase arrangement in which the entity has agreed to expend funds to procure goods or services from a supplier.

No definition available.