Condensed Consolidated Statements of Changes in Equity (Unaudited) (Parentheticals) - $ / shares	3 Months Ended
Jul. 31, 2022	Apr. 30, 2022	Jan. 31, 2022
Dividend per share (in dollars per share)	$ 476.56	$ 476.56	$ 476.56

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

No definition available.

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