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CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY (Parenthetical) - USD ($) $ in Millions	3 Months Ended
	Nov. 30, 2021	Aug. 31, 2021	Nov. 30, 2020	Aug. 31, 2020
Pension and postretirement adjustments, tax portion	$ (0.1)	$ 0.1	$ 1.8	$ 0.0
Common Class A
Dividends declared per class A and common share (in Dollars per share)	$ 0.15	$ 0.15	$ 0.15	$ 0.15

X

- Definition

Aggregate dividends declared during the period for each share of common stock outstanding.

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Amount, after reclassification adjustment, of tax (expense) benefit for (increase) decrease in accumulated other comprehensive income of defined benefit plan.

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