Discontinued Operations and Restructuring - Additional Disclosures (Details) - Discontinued Operations [Member] $ in Millions	3 Months Ended	12 Months Ended
	Jun. 30, 2013 Store	Sep. 30, 2015 USD ($)	Sep. 30, 2014 USD ($)	Sep. 30, 2013 USD ($)
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Number of stores closing | Store	107
Total revenue from discontinued operations | $		$ 124.7	$ 188.8	$ 205.9