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CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY (Parenthetical) - USD ($) $ in Millions | 3 Months Ended
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Feb. 28, 2023 | Nov. 30, 2022 | Aug. 31, 2022 | Feb. 28, 2022 | Nov. 30, 2021 | Aug. 31, 2021
Pension and postretirement adjustments, tax portion | $ 0.1 | $ 0.0 | $ 0.1 | $ 0.0 | $ (0.1) | $ 0.1
Common Class A |  |  |  |  |  |
Dividends declared per class A and common share (in Dollars per share) | $ 0.20 | $ 0.20 | $ 0.20 | $ 0.15 | $ 0.15 | $ 0.15

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