ACCOUNTS AND NOTES RECEIVABLE (Details) $ in Millions	Oct. 31, 2020 USD ($)
ACCOUNTS AND NOTES RECEIVABLE
Outstanding balances of accounts receivable and contract assets	$ 24.5
Past due notes receivable	$ 1.7

Amount of accounts receivable past due, classified as noncurrent.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 20
-Section 50
-Paragraph 14
-URI http://asc.fasb.org/extlink&oid=119407570&loc=SL82919253-210447

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