Face (par) amount of debt instrument at time of issuance.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 55
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=34725769&loc=d3e28878-108400

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28551-108399

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- Definition

Fair value portion of debt instrument payable, including, but not limited to, notes payable and loans payable.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 10
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=49121117&loc=d3e13433-108611

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 12
-URI http://asc.fasb.org/extlink&oid=49121117&loc=d3e13476-108611

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- Definition

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

+ 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(a)(1))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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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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No definition available.

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Notes Payable, Long-Term Debt and Capital Lease Obligations (Fair Value) (Details 4) - USD ($)	Aug. 31, 2016	May 19, 2016	Aug. 31, 2012	Nov. 30, 2010	Aug. 31, 2009	May 31, 2008	Feb. 29, 2008
7.750% Senior Notes Due 2016
Debt Instrument [Line Items]
Senior unsecured notes					$ 312,000,000
Senior unsecured notes, interest rate					7.75%
8.250% Senior Notes Due 2018
Debt Instrument [Line Items]
Senior unsecured notes						$ 150,000,000	$ 250,000,000
Senior unsecured notes, interest rate						8.25%	8.25%
Estimated fair value of senior notes	$ 437,900,000
5.625% Senior Notes Due 2020
Debt Instrument [Line Items]
Senior unsecured notes				$ 400,000,000
Senior unsecured notes, interest rate				5.625%
Estimated fair value of senior notes	433,300,000
4.700% Senior Notes due 2022
Debt Instrument [Line Items]
Senior unsecured notes			$ 500,000,000
Senior unsecured notes, interest rate			4.70%
Estimated fair value of senior notes	523,800,000
4.900% Senior Notes due 2023
Debt Instrument [Line Items]
Senior unsecured notes		$ 300,000,000
Senior unsecured notes, interest rate		4.90%
Estimated fair value of senior notes	$ 312,300,000