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Revenues - Narrative (Details) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
May 31, 2023
May 31, 2022
May 31, 2023
May 31, 2022
Aug. 31, 2022
Revenue from Contract with Customer [Abstract]          
Revenue recognized $ 93.1 $ 48.1 $ 285.3 $ 213.9  
Contract liabilities 318.0   318.0   $ 541.5
Commodity Contract Asset, Current $ 51.7   $ 51.7   $ 17.2