v3.26.1
Reclassification out of Accumulated Other Comprehensive Income (Details) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]        
Cost of products sold $ (0.2) $ (1.9) $ (26.9) $ 3.3
Interest expense 39.7 39.0 118.1 114.0
Cost of products sold 453.5 325.6 1,360.3 1,191.6
Income tax expense 9.9 10.7 20.1 26.6
Net earnings 39.9 153.5 46.6 204.1
Amount Reclassified from AOCI        
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]        
Net earnings (1.6) (4.2) 22.4 (15.1)
Other Comprehensive Income, Cash Flow Hedge, Adjustment | Amount Reclassified from AOCI        
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]        
Cost of products sold 1.3 (0.3) 4.5 (2.5)
Interest expense (3.4) (5.1) 11.5 16.9
Cost of products sold (1.2) (1.1) (1.1) (3.4)
Earnings before income taxes (3.3) (6.5) (8.1) (22.8)
Income tax expense 0.7 1.5 (1.8) (5.5)
Net earnings (2.6) (5.0) (6.3) (17.3)
Amortization of defined benefit pension items | Amount Reclassified from AOCI        
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]        
Earnings before income taxes 1.1 1.0 29.4 2.9
Actuarial loss 0.9 1.0 (3.1) (2.9)
Settlement loss on U.K. Pension plan termination 0.2 0.0 26.3 0.0
Income tax expense (0.1) (0.2) 0.7 0.7
Net earnings $ 1.0 $ 0.8 $ 28.7 $ 2.2