Supplemental Balance Sheet Information (Detail) - USD ($) $ in Millions	Sep. 30, 2020	Dec. 31, 2019
Inventories
Raw materials and supplies	$ 213.0	$ 196.2
Work-in-process	65.7	65.2
Finished goods	123.0	116.0
Total inventories	401.7	377.4
Other current assets
Cost in excess of billings	55.6	41.0
Prepaid expenses	51.0	48.3
Prepaid income taxes	7.3	5.2
Other current assets	3.2	4.6
Total other current assets	117.1	99.1
Property, plant and equipment, net
Land and land improvements	34.7	33.7
Buildings and leasehold improvements	190.7	188.1
Machinery and equipment	566.2	537.2
Capitalized Computer Software, Gross	74.5	73.5
Construction in progress	54.2	48.1
Total property, plant and equipment	920.3	880.6
Accumulated depreciation and amortization	629.2	597.4
Total property, plant and equipment, net	291.1	283.2
Operating Lease, Right-of-Use Asset	78.0	77.2
Other non-current assets
Prepaid income taxes	29.6	29.6
Deferred compensation plan assets	19.8	21.3
Other non-current assets	68.6	68.8
Total other non-current assets	196.0	196.9
Other current liabilities
Dividends payable	31.7	32.0
Accrued warranty	36.2	32.1
Accrued rebates and incentives	148.7	83.5
Billings in excess of cost	21.7	22.5
Current lease liability	20.2	19.0
Income taxes payable	22.8	11.1
Accrued restructuring	12.4	16.2
Other current liabilities	141.6	136.5
Total other current liabilities	435.3	352.9
Other non-current liabilities
Long-term lease liability	62.4	61.1
Income taxes payable	45.6	45.4
Self-insurance liabilities	39.8	41.6
Deferred compensation plan liabilities	19.8	21.3
Foreign currency contract liabilities	27.8	11.6
Other non-current liabilities	27.7	25.7
Total other non-current liabilities	$ 223.1	$ 206.7