XML 16 R6.htm IDEA: XBRL DOCUMENT
v3.23.1

Condensed Consolidated Statements of Changes in Equity (Unaudited) (Parentheticals) - $ / shares | 3 Months Ended
--- | ---
Apr. 30, 2023 | Jan. 31, 2023 | Apr. 30, 2022 | Jan. 31, 2022
Dividend per share (in dollars per share) | $ 476.56 | $ 476.56 | $ 476.56 | $ 476.56

X
- Definition Aggregate dividends declared during the period for each share of preferred stock outstanding. + References No definition available. + Details
Name: | us-gaap_PreferredStockDividendsPerShareDeclared
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:perShareItemType
Balance Type: | na
Period Type: | duration