Inventories (Narrative) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2014	Mar. 31, 2013
Inventory Disclosure [Abstract]
Inventory Write-down	$ 1.4	$ 1.5	$ 2.2	$ 2.3