Fair Value Measurements (Assets Held For Sale Measured At Fair Value) (Details) - Carrying Amount - USD ($) $ in Millions	9 Months Ended
May 31, 2022	Aug. 31, 2021
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Assets held for sale	$ 0	$ 61
Property, Plant and Equipment, Disposals	$ 61

Fair value portion of assets classified as held for sale.

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=123874694&loc=d3e19207-110258

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