Amount of assets pledged to secure a debt instrument.

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The average effective interest rate during the reporting period.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).

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Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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The cash inflow from additional borrowings, net of cash paid to third parties in connection with debt origination.

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The cash outflow for debt initially having maturity due after one year or beyond the normal operating cycle, if longer.

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Reflects the total carrying amount as of the balance sheet date of debt having initial terms less than one year or the normal operating cycle, if longer.

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Debt Obligations - Trade Receivables Facility (Details) - USD ($)		3 Months Ended			9 Months Ended
	Nov. 29, 2016	Jun. 30, 2018	Jun. 30, 2017	Dec. 31, 2016	Jun. 30, 2018	Jun. 30, 2017	Nov. 20, 2017	Sep. 30, 2017
Debt Instrument [Line Items]
Proceeds from borrowings					$ 170,000,000	$ 75,000,000
Repayments of long-term debt					39,000,000	$ 87,000,000
Short-term debt outstanding amount		$ 0			0			$ 75,000,000
Secured Debt \| Trade Receivables Facility
Debt Instrument [Line Items]
Maximum borrowing capacity under the Revolover	$ 125,000,000						$ 175,000,000
Secured Debt \| Line of Credit \| Trade Receivables Facility
Debt Instrument [Line Items]
Proceeds from borrowings					100,000,000
Repayments of long-term debt					1,000,000
Long-term debt outstanding amount		174,000,000			174,000,000
Total borrowing capacity remaining (less than)		$ 1,000,000			$ 1,000,000
Weighted average interest rates		2.90%	1.80%		2.60%	1.70%
Line of Credit \| Secured Debt \| Trade Receivables Facility
Debt Instrument [Line Items]
Term of debt	1 year
Proceeds from borrowings				$ 75,000,000
Short-term debt outstanding amount								75,000,000
Financing Subsidiary \| Secured Debt \| Line of Credit \| Trade Receivables Facility
Debt Instrument [Line Items]
Accounts receivable pledged as collateral		$ 282,000,000			$ 282,000,000			$ 247,000,000