Supplemental Balance Sheet Information (Detail) - USD ($) $ in Millions	Mar. 31, 2019	Dec. 31, 2018
Inventories
Raw materials and supplies	$ 208.5	$ 191.3
Work-in-process	68.3	64.0
Finished goods	145.0	132.2
Total inventories	421.8	387.5
Other current assets
Cost in excess of billings	38.4	36.5
Prepaid expenses	52.7	36.7
Prepaid income taxes	5.3	8.5
Other current assets	8.8	7.7
Total other current assets	105.2	89.4
Property, plant and equipment, net
Land and land improvements	33.6	33.5
Buildings and leasehold improvements	179.6	178.9
Machinery and equipment	604.1	593.8
Construction in progress	39.6	35.7
Total property, plant and equipment	856.9	841.9
Accumulated depreciation and amortization	577.8	569.3
Total property, plant and equipment, net	279.1	272.6
Operating Lease, Right-of-Use Asset	74.7	0.0
Other non-current assets
Prepaid income taxes	26.3	26.2
Deferred compensation plan assets	21.2	20.9
Other non-current assets	84.8	98.4
Total other non-current assets	207.0	145.5
Other current liabilities
Dividends payable	30.9	30.8
Accrued warranty	34.6	33.9
Accrued rebates	45.7	55.7
Billings in excess of cost	19.7	21.3
Operating Lease, Liability, Current	19.9	0.0
Income taxes payable	9.9	10.4
Accrued restructuring	20.2	27.1
Other current liabilities	164.9	149.2
Total other current liabilities	345.8	328.4
Operating Lease, Liability, Noncurrent	57.7	0.0
Other non-current liabilities
Income taxes payable	46.8	46.8
Self-insurance liabilities	45.7	47.7
Deferred compensation plan liabilities	21.2	20.9
Foreign currency contract liabilities	23.9	30.6
Other non-current liabilities	26.1	22.2
Total other non-current liabilities	$ 221.4	$ 168.2