Segment Operations - Financial Information for Reportable Segments (Parenthetical) (Detail) - USD ($) $ in Thousands	3 Months Ended
Aug. 31, 2021	Aug. 31, 2020
Segment Reporting [Abstract]
Impairment and restructuring charges (gains)	$ (5,946,000)	$ 116,000

Amount of restructuring charges, remediation cost, and asset impairment loss.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.3)
-URI http://asc.fasb.org/extlink&oid=120395209&loc=SL114868664-224227

Name:	us-gaap_RestructuringSettlementAndImpairmentProvisions
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration