v3.25.2
CONSOLIDATED STATEMENT OF COMPREHENSIVE INCOME (Parenthetical) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
Statement of Comprehensive Income [Abstract]        
Pension and other postretirement benefit plan adjustments tax (expense) benefit $ (2.0) $ 0.0 $ (5.0) $ 0.0
Net change in unrealized gains and losses on cash flow hedges tax (expense) benefit $ 6.0 $ 0.0 $ 0.0 $ 5.0