Sale of Composites Business (Details) - Composites business $ in Millions	3 Months Ended
Aug. 31, 2020 USD ($)
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Anticipated impairment charge	$ 20
Contingent consideration, Period for achievement of sales targets	3 years

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

No definition available.

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Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration