Accounts Receivable Factoring and Securitization (Details) € in Millions	3 Months Ended		6 Months Ended
	Mar. 31, 2017 USD ($)	Mar. 31, 2016 USD ($)	Mar. 31, 2017 USD ($)	Mar. 31, 2016 USD ($)	Mar. 31, 2017 EUR (€)	Mar. 31, 2017 USD ($)	Sep. 30, 2016 EUR (€)	Sep. 30, 2016 USD ($)
Accounts Receivable Factoring and Securitization [Line Items]
Costs associated with off balance sheet factoring arrangements	$ 1,000,000	$ 2,000,000	$ 2,000,000	$ 4,000,000
Swedish Factoring Facility
Accounts Receivable Factoring and Securitization [Line Items]
Maximum limit for sale of eligible trade receivables					€ 155	$ 166,000,000
Utilization of accounts receivable factoring facility under arrangement					145	155,000,000	€ 121	$ 135,000,000
Liquidity commitment			364 days
U.S Factoring Facility
Accounts Receivable Factoring and Securitization [Line Items]
Maximum limit for sale of eligible trade receivables					80	85,000,000
Utilization of accounts receivable factoring facility under arrangement					31	33,000,000	39	44,000,000
United Kingdom Factoring Facility
Accounts Receivable Factoring and Securitization [Line Items]
Maximum limit for sale of eligible trade receivables					25	27,000,000
Utilization of accounts receivable factoring facility under arrangement					7	7,000,000	6	6,000,000
Italy Factoring Facility
Accounts Receivable Factoring and Securitization [Line Items]
Maximum limit for sale of eligible trade receivables					30	32,000,000
Utilization of accounts receivable factoring facility under arrangement					€ 26	27,000,000	€ 22	24,000,000
Other Factoring Facility
Accounts Receivable Factoring and Securitization [Line Items]
Utilization of accounts receivable factoring facility under arrangement						12,000,000		10,000,000
U.S. Securitization Financing Facility
Accounts Receivable Factoring and Securitization [Line Items]
Maximum limit for securitization financing arrangement						100,000,000
Debt-to-EBITDA ratio			2.25
Outstanding balance under accounts receivable securitization program						$ 0		$ 0