Consolidated Statements of Changes inEquity (Parenthetical) - $ / shares	12 Months Ended
May 31, 2022	May 31, 2021
Statement of Stockholders' Equity [Abstract]
Preferred Stock, Dividends, Per Share, Cash Paid	$ 6.57	$ 6.46

Aggregate dividends paid during the period for each share of preferred stock outstanding.

No definition available.

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Namespace Prefix:	us-gaap_
Data Type:	dtr-types:perShareItemType
Balance Type:	na
Period Type:	duration