Accounts Receivable Factoring and Securitization (Details)	3 Months Ended		6 Months Ended						6 Months Ended														0 Months Ended
	Mar. 31, 2015 USD ($)	Mar. 31, 2014 USD ($)	Mar. 31, 2015 USD ($)	Mar. 31, 2014 USD ($)	Mar. 31, 2015 Swedish Factoring Facility USD ($)	Mar. 31, 2015 Swedish Factoring Facility EUR (€)	Sep. 30, 2014 Swedish Factoring Facility USD ($)	Sep. 30, 2014 Swedish Factoring Facility EUR (€)	Mar. 31, 2015 U.S Factoring Facility USD ($)	Mar. 31, 2015 U.S Factoring Facility EUR (€)	Sep. 30, 2014 U.S Factoring Facility USD ($)	Sep. 30, 2014 U.S Factoring Facility EUR (€)	Mar. 31, 2015 United Kingdom Factoring Facility USD ($)	Mar. 31, 2015 United Kingdom Factoring Facility EUR (€)	Sep. 30, 2014 United Kingdom Factoring Facility USD ($)	Sep. 30, 2014 United Kingdom Factoring Facility EUR (€)	Mar. 31, 2015 Italy Factoring Facility USD ($)	Mar. 31, 2015 Italy Factoring Facility EUR (€)	Sep. 30, 2014 Italy Factoring Facility USD ($)	Sep. 30, 2014 Italy Factoring Facility EUR (€)	Mar. 31, 2015 Other Factoring Facility USD ($)	Sep. 30, 2014 Other Factoring Facility USD ($)	Oct. 15, 2014 U.S. Securitization Financing Facility	Mar. 31, 2015 U.S. Securitization Financing Facility USD ($)	Sep. 30, 2014 U.S. Securitization Financing Facility USD ($)
Maximum limit for sale of eligible trade receivables					$ 163,000,000	€ 150,000,000			$ 71,000,000	€ 65,000,000			$ 27,000,000	€ 25,000,000			$ 33,000,000	€ 30,000,000
Utilization of accounts receivable factoring facility under arrangement					128,000,000	117,000,000	127,000,000	99,000,000	85,000,000	78,000,000	81,000,000	64,000,000	6,000,000	6,000,000	7,000,000	6,000,000	18,000,000	16,000,000	10,000,000	8,000,000	17,000,000	19,000,000
Liquidity commitment on facilities									364 days	364 days
Costs associated with off balance sheet factoring arrangements	1,000,000	2,000,000	3,000,000	5,000,000
Maximum limit for securitization financing arrangement																								100,000,000
Ratio of total priority debt to EBITDA through period end																							2.25
Outstanding balance under accounts receivable securitization program																								$ 0	$ 0