Postretirement and Other Employee Benefits (Additional Information) (Details) - Foreign Plan $ in Millions	9 Months Ended
May 31, 2020 USD ($)
Pension and Other Postretirement Benefits Disclosure [Line Items]
Service period	8 years
Switzerland Plan
Pension and Other Postretirement Benefits Disclosure [Line Items]
Service period	8 years
Switzerland Plan \| Minimum
Pension and Other Postretirement Benefits Disclosure [Line Items]
Expected cash contributions	$ 9.9
Switzerland Plan \| Maximum
Pension and Other Postretirement Benefits Disclosure [Line Items]
Expected cash contributions	$ 12.1

Amount of contribution expected to be received by defined benefit plan from employer in next fiscal year following current fiscal year.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (g)
-URI http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920

Reference 2: http://www.xbrl.org/2003/role/exampleRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 55
-Paragraph 18
-URI http://asc.fasb.org/extlink&oid=118257860&loc=d3e4587-114921

Name:	us-gaap_DefinedBenefitPlanExpectedFutureEmployerContributionsNextFiscalYear
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant