Revenue Recognition (Narrative) (Details) - USD ($) $ in Millions	12 Months Ended
	Aug. 31, 2025	Aug. 31, 2024
Disaggregation Of Revenue [Line Items]
Unsatisfied performance obligation amount	$ 10.7	$ 97.9
Revenue recognized	18.9
Other Current Assets [Member]
Disaggregation Of Revenue [Line Items]
Contract assets	1.1	3.3
Other Current and Noncurrent Liabilities [Member]
Disaggregation Of Revenue [Line Items]
Contract liabilities	$ 14.2	$ 21.5