Short-term Borrowings and Long-term Debt - Details of Long-term Debt Table (Details) - USD ($) $ in Thousands	9 Months Ended
Jun. 30, 2017	Sep. 30, 2016
Debt Instruments
Total	$ 1,881,500	$ 1,800,000
ABL facility
Debt Instruments
Total	$ 81,500
ABL facility \| Prime \| Minimum
Debt Instruments
Percentage points added to the reference rate	0.50%
ABL facility \| Prime \| Maximum
Debt Instruments
Percentage points added to the reference rate	0.75%
ABL facility \| LIBOR \| Minimum
Debt Instruments
Percentage points added to the reference rate	1.50%
ABL facility \| LIBOR \| Maximum
Debt Instruments
Percentage points added to the reference rate	1.75%
Senior notes due Jun. 2022
Debt Instruments
Total	$ 850,000	850,000
Interest rate (as a percent)	5.75%
Senior notes due Nov. 2023
Debt Instruments
Total	$ 200,000	200,000
Interest rate (as a percent)	5.50%
Senior notes due Dec. 2025
Debt Instruments
Total	$ 750,000	$ 750,000
Interest rate (as a percent)	5.625%

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

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- Definition

Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(22))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(16))
-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(16))
-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

+ Details

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- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

+ Details

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- Definition

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.

+ References

No definition available.

+ Details

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