Supplemental Balance Sheet Information (Detail) - USD ($) $ in Millions	Sep. 30, 2021	Dec. 31, 2020
Inventories
Raw materials and supplies	$ 265.4	$ 218.7
Work-in-process	71.2	67.2
Finished goods	168.0	134.1
Total inventories	504.6	420.0
Other current assets
Cost in excess of billings	55.2	50.1
Prepaid expenses	50.8	48.5
Prepaid income taxes	1.7	3.8
Other current assets	3.0	3.1
Total other current assets	110.7	105.5
Property, plant and equipment, net
Land and land improvements	35.1	35.9
Buildings and leasehold improvements	192.1	195.4
Machinery and equipment	601.0	589.7
Capitalized software	82.8	79.9
Construction in progress	56.2	47.8
Total property, plant and equipment	967.2	948.7
Accumulated depreciation and amortization	670.4	647.5
Total property, plant and equipment, net	296.8	301.2
Other non-current assets
Right-of-use lease assets	78.6	83.6
Prepaid income taxes	27.3	27.4
Deferred compensation plan assets	24.2	22.6
Other non-current assets	70.3	69.2
Total other non-current assets	200.4	202.8
Other current liabilities
Dividends payable	33.1	33.2
Accrued warranty	43.0	37.0
Accrued rebates and incentives	209.6	122.0
Billings in excess of cost	30.7	22.5
Current lease liability	24.7	22.1
Income taxes payable	21.8	14.6
Accrued restructuring	12.3	15.2
Other current liabilities	152.0	143.8
Total other current liabilities	527.2	410.4
Other non-current liabilities
Long-term lease liability	56.1	65.1
Income taxes payable	45.0	44.8
Self-insurance liabilities	45.1	42.0
Deferred compensation plan liabilities	24.2	22.6
Foreign currency contract liabilities	26.3	69.6
Other non-current liabilities	28.1	25.3
Total other non-current liabilities	$ 224.8	$ 269.4