Schedule of Accumulated Other Comprehensive Income (Loss) (Details) $ in Millions	9 Months Ended
	Jun. 30, 2024 USD ($)
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at September 30, 2023	$ (137.7)
OCI before reclassifications	(13.2)
Reclassifications to earnings	(12.8)
Balance at December 31, 2022	(163.7)
Foreign Currency Translation Adjustments (1)
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at September 30, 2023	(89.7)
OCI before reclassifications	(11.5)
Reclassifications to earnings	(0.7)
Balance at December 31, 2022	(101.9)
Pension Activity
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at September 30, 2023	(110.3)
OCI before reclassifications	(0.8)
Reclassifications to earnings	1.6
Balance at December 31, 2022	(109.5)
Foreign Currency Contracts
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at September 30, 2023	2.1
OCI before reclassifications	(1.4)
Reclassifications to earnings	(0.7)
Balance at December 31, 2022	0.0
Zinc contracts
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at September 30, 2023	(0.5)
OCI before reclassifications	(1.6)
Reclassifications to earnings	4.9
Balance at December 31, 2022	2.8
Interest Rate Contracts | Foreign Currency Contracts
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at September 30, 2023	60.7
OCI before reclassifications	2.1
Reclassifications to earnings	(17.9)
Balance at December 31, 2022	$ 44.9