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Revenues - Narrative (Details) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
May 31, 2025
May 31, 2024
May 31, 2025
May 31, 2024
Aug. 31, 2024
Revenue from Contract with Customer [Abstract]          
Revenue recognized $ 26.3 $ 54.0 $ 192.6 $ 222.8  
Contract liabilities 274.1   274.1   $ 248.8
Commodity Contract Asset, Current $ 17.9   $ 17.9   $ 34.7