Supplemental Balance Sheet Information (Detail) - USD ($) $ in Millions	Mar. 31, 2021	Dec. 31, 2020
Inventories
Raw materials and supplies	$ 225.5	$ 218.7
Work-in-process	66.9	67.2
Finished goods	136.7	134.1
Total inventories	429.1	420.0
Other current assets
Cost in excess of billings	53.7	50.1
Prepaid expenses	59.6	48.5
Prepaid income taxes	1.7	3.8
Other current assets	3.0	3.1
Total other current assets	118.0	105.5
Property, plant and equipment, net
Land and land improvements	35.4	35.9
Buildings and leasehold improvements	189.4	195.4
Machinery and equipment	587.1	589.7
Capitalized Computer Software, Gross	81.9	79.9
Construction in progress	52.2	47.8
Total property, plant and equipment	946.0	948.7
Accumulated depreciation and amortization	652.6	647.5
Total property, plant and equipment, net	293.4	301.2
Other non-current assets
Right-of-use lease assets	81.2	83.6
Prepaid income taxes	27.5	27.4
Deferred compensation plan assets	22.5	22.6
Other non-current assets	68.3	69.2
Total other non-current assets	199.5	202.8
Other current liabilities
Dividends payable	33.2	33.2
Accrued warranty	41.4	37.0
Accrued rebates and incentives	122.3	122.0
Billings in excess of cost	23.6	22.5
Current lease liability	22.4	22.1
Income taxes payable	29.1	14.6
Accrued restructuring	12.8	15.2
Other current liabilities	141.0	143.8
Total other current liabilities	425.8	410.4
Other non-current liabilities
Long-term lease liability	61.3	65.1
Income taxes payable	44.9	44.8
Self-insurance liabilities	42.7	42.0
Deferred compensation plan liabilities	22.5	22.6
Foreign currency contract liabilities	32.4	69.6
Other non-current liabilities	27.6	25.3
Total other non-current liabilities	$ 231.4	$ 269.4