Background and Basis of Presentation (Details) $ / shares in Units, $ in Millions	3 Months Ended								12 Months Ended
	Sep. 30, 2023 USD ($) country $ / shares	Jun. 30, 2023 USD ($) $ / shares	Mar. 31, 2023 USD ($) $ / shares	Dec. 31, 2022 USD ($) $ / shares	Sep. 30, 2022 USD ($) $ / shares	Jun. 30, 2022 USD ($) $ / shares	Mar. 31, 2022 USD ($) $ / shares	Dec. 31, 2021 USD ($) $ / shares	Sep. 30, 2023 USD ($) country $ / shares	Sep. 30, 2022 USD ($) $ / shares	Sep. 30, 2021 USD ($) $ / shares	Sep. 30, 2020 USD ($)
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Number of countries | country	20								20
Number Of Countries with Retail Operations | country	50								50
Reclassification [Line Items]
Basic net earnings per share | $ / shares	$ 0.59	$ 1.04	$ 0.38	$ 0.24	$ 0.65	$ 0.59	$ 0.43	$ 0.21	$ 2.24	$ 1.87	$ 2.17
Dilutive net earnings per share | $ / shares	$ 0.58	$ 1.02	$ 0.37	$ 0.24	$ 0.64	$ 0.58	$ 0.43	$ 0.20	$ 2.21	$ 1.85	$ 2.13
Cost of products sold									$ 1,310.8	$ 1,291.2	$ 1,136.1
Gross profit	$ 228.6	$ 280.3	$ 242.3	$ 189.6	$ 219.0	$ 240.9	$ 230.4	$ 190.2	940.8	880.5	951.2
Operating income									227.0	182.3	239.9
Earnings before income taxes									147.7	124.1	147.1
Income tax provision									33.0	24.6	29.3
Net earnings	29.9	$ 53.0	$ 19.4	$ 12.4	33.7	$ 30.8	$ 23.5	$ 11.5	114.7	99.5	117.8
Total comprehensive income (loss)									160.8	20.3	172.5
Other, net									(23.5)	(9.6)	(2.5)
Accounts payable									(30.2)	29.3	24.3
Accounts payable	(194.4)				(228.8)				(194.4)	(228.8)
Total current liabilities	523.4				539.5				523.4	539.5
Other liabilities	179.7				174.7				179.7	174.7
Total liabilities	2,200.2				2,246.0				2,200.2	2,246.0
Retained earnings	1,022.1				939.1				1,022.1	939.1
Stockholders' Equity Attributable to Parent	$ 1,540.5				$ 1,467.1				$ 1,540.5	$ 1,467.1	$ 1,590.8	$ 1,438.6
Number of Reportable Segments | country									3
Previously reported
Reclassification [Line Items]
Basic net earnings per share | $ / shares		$ 1.03	$ 0.37	$ 0.23	$ 0.65	$ 0.58	$ 0.43	$ 0.21		$ 1.86	$ 2.15
Dilutive net earnings per share | $ / shares		$ 1.01	$ 0.37	$ 0.23	$ 0.64	$ 0.57	$ 0.43	$ 0.20		$ 1.84	$ 2.12
Cost of products sold										$ 1,292.3	$ 1,137.2
Gross profit		$ 279.7	$ 241.7	$ 189.0	$ 218.8	$ 240.6	$ 230.1	$ 189.9		879.4	950.1
Operating income										181.2	238.8
Earnings before income taxes										123.0	146.0
Income tax provision										24.4	29.0
Net earnings		$ 52.5	$ 19.0	$ 11.9	33.7	$ 30.5	$ 23.2	$ 11.2		98.6	117.0
Total comprehensive income (loss)										19.4	171.7
Other, net										(9.8)	(2.8)
Accounts payable										30.4	$ 25.4
Accounts payable					(237.3)					(237.3)
Total current liabilities					548.0					548.0
Other liabilities					173.6					173.6
Total liabilities					2,253.4					2,253.4
Retained earnings					931.7					931.7
Stockholders' Equity Attributable to Parent					$ 1,459.7					$ 1,459.7
Restatement adjustment
Reclassification [Line Items]
Basic net earnings per share | $ / shares		$ 0.01	$ 0.01	$ 0.01	$ 0	$ 0.01	$ 0	$ 0		$ 0.01	$ 0.02
Dilutive net earnings per share | $ / shares		$ 0.01	$ 0	$ 0.01	$ 0	$ 0.01	$ 0	$ 0		$ 0.01	$ 0.01
Cost of products sold										$ (1.1)	$ (1.1)
Gross profit		$ 0.6	$ 0.6	$ 0.6	$ 0.2	$ 0.3	$ 0.3	$ 0.3		1.1	1.1
Operating income										1.1	1.1
Earnings before income taxes										1.1	1.1
Income tax provision										0.2	0.3
Net earnings		$ 0.5	$ 0.4	$ 0.5	0.0	$ 0.3	$ 0.3	$ 0.3		0.9	0.8	$ 5.7
Total comprehensive income (loss)										0.9	0.8
Other, net										0.2	0.3
Accounts payable										(1.1)	$ (1.1)
Accounts payable					8.5					8.5
Total current liabilities					(8.5)					(8.5)
Other liabilities					1.1					1.1
Total liabilities					(7.4)					(7.4)
Retained earnings					7.4					7.4
Stockholders' Equity Attributable to Parent					$ 7.4					$ 7.4