Related Party Transactions (Details)	12 Months Ended
May 31, 2020
Frederick W. Smith [Member] \| Washington D.C. National Football League [Member]
Related Party Transaction [Line Items]
Related party ownership interest	10.00%

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.

Name:	us-gaap_RelatedPartyTransactionLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration