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Condensed Consolidated Statements of Changes in Common Stockholders' Investment (Parenthetical) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Nov. 30, 2022 | Nov. 30, 2021 | Nov. 30, 2022 | Nov. 30, 2021
Statement of Stockholders' Equity [Abstract] |  |  |  |
Cash dividends declared, per share | $ 1.15 | $ 0.75 | $ 3.45 | $ 2.25
Other comprehensive income, tax benefit | $ 10 | $ 5 | $ 28 | $ 5
Purchase of treasury stock | 7,900,000 | 900,000 | 7,900,000 | 2,800,000
Employee incentive plans and other, shares issued | 100,000 | 200,000 | 800,000 | 800,000

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