v3.26.3
Reclassifications from Accumulated Other Comprehensive Loss - Schedule of Amounts Reclassified from AOCI (Details) - USD ($)
$ in Millions
 3 Months Ended
Sep. 30, 2026
Sep. 30, 2025
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]    
Other $ 3.1 $ 3.0
Total before tax 192.4 144.8
Tax (expense) benefit (29.9) (22.3)
Net income 162.5 122.5
Amount Reclassified from AOCI | Cash flow hedging items    
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]    
Cost of sales (0.7) (1.5)
Total before tax (0.7) (1.5)
Tax (expense) benefit 0.2 0.3
Net income (0.5) (1.2)
Amount Reclassified from AOCI | Pension and other postretirement benefit plan items    
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]    
Total before tax 0.9 (0.5)
Tax (expense) benefit (0.2) 0.1
Net income 0.7 (0.4)
Amount Reclassified from AOCI | Net actuarial gain (loss)    
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]    
Other 0.9 (0.1)
Amount Reclassified from AOCI | Prior service cost    
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]    
Other $ 0.0 $ (0.4)