Contingencies - Additional Information (Details) $ in Millions	12 Months Ended
May 31, 2021 USD ($)
Loss Contingency [Abstract]
Litigation, final settlement amount	$ 35
Attorneys fees recognized in connection with underlying lawsuits	10
Environmental loss contingencies threshold amount	$ 1

Amount awarded from other party in judgment or settlement of litigation.

No definition available.

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