Pension and Other Postretirement Benefits Disclosure [Line Items]

No definition available.

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- Definition

Amount included in accumulated other comprehensive income (AOCI) related to gain (loss) expected to be recognized as components of net periodic benefit cost for the fiscal year that follows the most recent annual statement of financial position.

+ References

No definition available.

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- Definition

Amount included in accumulated other comprehensive income (AOCI) related to prior service cost (credit) expected to be recognized as components of net periodic benefit cost for the fiscal year that follows the most recent annual statement of financial position.

+ References

No definition available.

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- Definition

Target allocation of investments of this type to total plan assets presented on a weighted average basis.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 5
-Subparagraph (c)(i)
-URI http://asc.fasb.org/extlink&oid=65897934&loc=d3e2446-114920

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (d)(i)
-URI http://asc.fasb.org/extlink&oid=65897934&loc=d3e1928-114920

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- Definition

Amount of employer's best estimate of contributions expected to be paid to the plan during the next fiscal year beginning after the date of the latest statement of financial position.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (g)
-URI http://asc.fasb.org/extlink&oid=65897934&loc=d3e1928-114920

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- Definition

Amount of labor-related expenses classified as other.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.4)
-URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688

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Postretirement and Other Employee Benefits (Additional Information) (Details 2) - USD ($) $ in Millions	12 Months Ended
	Aug. 31, 2017	Aug. 31, 2016	Aug. 31, 2015
Pension and Other Postretirement Benefits Disclosure [Line Items]
Net actuarial loss expected to be amortized to net period benefit cost in next fiscal year	$ 1.1
Prior service credit expected to be amortized to net periodic benefit cost in next fiscal year	(0.1)
Company contributions	33.6	$ 33.3	$ 36.8
Minimum
Pension and Other Postretirement Benefits Disclosure [Line Items]
Contributions expected to funded pension plans during fiscal year 2018	2.7
Maximum
Pension and Other Postretirement Benefits Disclosure [Line Items]
Contributions expected to funded pension plans during fiscal year 2018	$ 3.5
Global equity securities
Pension and Other Postretirement Benefits Disclosure [Line Items]
Target allocation percentage	35.00%
Debt Securities
Pension and Other Postretirement Benefits Disclosure [Line Items]
Target allocation percentage	65.00%