Condensed Statements of Consolidated Shareholders' Equity (Unaudited) (Parentheticals) - USD ($) $ in Millions	3 Months Ended
Oct. 31, 2022	Jul. 31, 2022	Oct. 31, 2021	Jul. 31, 2021
Statement of Stockholders' Equity [Abstract]
Dividends declared per common share	$ 1.02	$ 1.02	$ 0.99	$ 0.99
Shares Issued, Value, Share-based Payment Arrangement, after Forfeiture	$ (4.4)	$ (6.5)	$ (6.6)	$ (9.5)

Value, after forfeiture, of shares issued under share-based payment arrangement. Excludes employee stock ownership plan (ESOP).

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.3-04)
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Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
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Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
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-Name Accounting Standards Codification
-Topic 210
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