Income Taxes - Components of Deferred Income Tax assets and Liabilities (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021	Sep. 30, 2021
Deferred tax assets:
Other long-term liabilities	$ 41.3	$ 50.3	$ 57.3
Research & Development	84.5
Losses and credits	44.5	44.0	61.5
Accrued warranty	13.4	15.5	16.3
Other current liabilities	21.6	21.8	24.5
Customer advances	75.3	140.6
Payroll-related obligations	13.1	14.8	26.2
Other	15.8	9.3	8.9
Gross deferred tax assets	309.5	296.3	194.7
Less valuation allowance	(6.2)	(6.7)	(6.2)
Deferred tax assets, net	303.3	289.6	188.5
Deferred tax liabilities:
Intangible assets	(55.6)	(52.8)	(51.6)
Property, plant and equipment	(30.9)	(94.1)	(143.9)
Inventories	(35.0)	(59.3)	(52.2)
Other	(47.0)	(11.7)	(40.6)
Deferred tax liabilities	(168.5)	(217.9)	(288.3)
Net deferred tax liabilities			$ (99.8)
Net deferred tax assets	$ 134.8	$ 71.7