GOODWILL AND OTHER INTANGIBLES (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended
Nov. 30, 2020	Nov. 30, 2019	Aug. 31, 2020
Goodwill and Intangible Assets Disclosure [Abstract]
Gross carrying amounts of the intangible assets subject to amortization	$ 21.8		$ 22.1
Net carrying amount of intangible assets subject to amortization	12.0		12.6
Carrying amount of acquired unfavorable contract backlog liability	4.5		$ 6.0
Amortization of unfavorable contract backlog	$ 1.5	$ 8.3

Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 928
-SubTopic 340
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6473545&loc=d3e61844-108004

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 50
-Paragraph 2
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275

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