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Consolidated Statements of Changes in Shareholders' Equity (Parentheticals) - $ / shares | 3 Months Ended
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Apr. 30, 2023 | Jan. 31, 2023 | Oct. 31, 2022 | Jul. 31, 2022 | Apr. 30, 2022 | Jan. 31, 2022 | Oct. 31, 2021 | Jul. 31, 2021 | Apr. 30, 2021 | Jan. 31, 2021 | Oct. 31, 2020 | Jul. 31, 2020
Dividends declared per share (in dollars per share) | $ 0.28 | $ 0.25 | $ 0.25 | $ 0.25 | $ 0.25 | $ 0.22 | $ 0.22 | $ 0.22 | $ 0.22 | $ 0.21 | $ 0.21 | $ 0.21

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- Definition Aggregate dividends declared during the period for each share of common stock outstanding. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 505 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480008/505-10-S99-1 + Details
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Namespace Prefix: | us-gaap_
Data Type: | dtr-types:perShareItemType
Balance Type: | na
Period Type: | duration