Balance Sheet Components - Components (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
RECEIVABLES
Customers	$ 354.9	$ 288.3
Other	8.7	10.9
Total	363.6	299.2
Less allowance for doubtful accounts	7.2	6.1
Total receivables - net	356.4	293.1
INVENTORIES
Raw materials and components parts	229.4	173.2
Work in process	47.4	29.5
Finished goods	93.6	87.2
Total inventories	370.4	289.9
PROPERTY, PLANT AND EQUIPMENT
Land and improvements	39.1	33.7
Buildings and improvements	197.9	192.4
Machinery, equipment and other	467.8	430.4
Office and transportation equipment	96.7	95.6
Construction in progress	30.5	28.7
Total	832.0	780.8
Less accumulated depreciation and amortization	504.7	482.5
Total property, plant and equipment - net	327.3	298.3
ACCRUED EXPENSES
Payroll and related items	91.5	75.2
Management incentive compensation	25.0	15.8
Income taxes payable	17.9	13.4
Insurance	11.0	11.1
Warranty	7.6	7.4
Deferred revenue	49.0	28.4
Lease liability	17.6	16.7
Restructuring	2.8	3.9
Accrued interest	3.6	3.6
Pension and retiree medical obligations	3.5	3.0
Other	30.3	30.3
Total accrued expenses	259.8	208.8
OTHER NONCURRENT LIABILITIES
Pension and retiree medical obligations	82.2	99.4
Transition tax payable	14.1	14.2
Deferred revenue	32.2	30.4
Lease liability	93.4	94.3
Other	25.5	28.5
Total other noncurrent liabilities	$ 247.4	$ 266.8