v3.25.1
CONSOLIDATED STATEMENT OF COMPREHENSIVE INCOME (Parenthetical) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Mar. 31, 2025
Mar. 31, 2024
Mar. 31, 2025
Mar. 31, 2024
Statement of Comprehensive Income [Abstract]        
Pension and other postretirement benefit plan adjustments tax (expense) benefit $ (1.0) $ 0.0 $ (3.0) $ 0.0
Net change in unrealized gains and losses on cash flow hedges tax (expense) benefit $ 5.0 $ (4.0) $ (6.0) $ 5.0