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Consolidated Statements of Stockholders' Equity (Parentheticals) - USD ($) $ in Millions | 12 Months Ended
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Jun. 30, 2023 | Jun. 30, 2022 | Jun. 30, 2021
Pension and OPEB adjustments, tax | $ 1.8 | $ 1.6 | $ 5.6
Change in fair value of derivatives, tax | $ 0.5 | $ 2.8 | $ 0.9
Dividends declared, per share (in dollars per share) | $ 1.10 | $ 1.02 | $ 0.94

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