Reclassification out of Accumulated Other Comprehensive Income (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Total Other items, net	$ (5.2)	$ 3.5	$ (4.6)	$ (2.7)
Interest expense	42.2	41.1	127.1	116.4
Cost of products sold	434.3	444.0	1,331.9	1,425.7
Income tax expense	(8.6)	(12.7)	(32.3)	(38.2)
Net earnings	31.8	52.4	120.8	131.4
Amount Reclassified from AOCI
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net earnings	(4.7)	(1.3)	(18.0)	(1.5)
Gains and losses on cash flow hedges | Amount Reclassified from AOCI
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Total Other items, net	(0.7)	(2.7)	(8.3)	(5.5)
Interest expense	(7.1)	1.3	18.3	(4.8)
Cost of products sold	0.9	(2.3)	0.6	(6.8)
Earnings before income taxes	(6.9)	(3.7)	(26.0)	(7.5)
Income tax expense	(1.6)	0.9	6.4	1.8
Net earnings	(5.3)	(2.8)	(19.6)	(5.7)
Amortization of defined benefit pension items | Amount Reclassified from AOCI
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Actuarial loss	(0.7)	1.9	2.0	5.5
Income tax expense	0.1	(0.4)	(0.4)	(1.3)
Net earnings	$ 0.6	$ 1.5	$ 1.6	$ 4.2