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CONSOLIDATED STATEMENTS OF EARNINGS AND COMPREHENSIVE INCOME (Condensed) - Parenthetical - USD ($)
$ in Millions
3 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Statement of Financial Position [Abstract]    
Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, Tax $ (0.2) $ 0.2
Deferred (loss)/gain on hedging activity, tax $ 3.9 $ (6.5)