Supplemental Balance Sheet Information (Detail) - USD ($) $ in Millions	Jun. 30, 2019	Dec. 31, 2018
Inventories
Raw materials and supplies	$ 206.9	$ 191.3
Work-in-process	66.3	64.0
Finished goods	123.5	132.2
Total inventories	396.7	387.5
Other current assets
Cost in excess of billings	43.5	36.5
Prepaid expenses	45.2	36.7
Prepaid income taxes	8.0	8.5
Other current assets	8.0	7.7
Total other current assets	104.7	89.4
Property, plant and equipment, net
Land and land improvements	33.7	33.5
Buildings and leasehold improvements	182.4	178.9
Machinery and equipment	608.9	593.8
Construction in progress	44.6	35.7
Total property, plant and equipment	869.6	841.9
Accumulated depreciation and amortization	589.3	569.3
Total property, plant and equipment, net	280.3	272.6
Operating Lease, Right-of-Use Asset	78.7	0.0
Other non-current assets
Prepaid income taxes	26.3	26.2
Deferred compensation plan assets	20.4	20.9
Other non-current assets	81.1	98.4
Total other non-current assets	206.5	145.5
Other current liabilities
Dividends payable	30.2	30.8
Accrued warranty	34.2	33.9
Accrued rebates	57.3	55.7
Billings in excess of cost	19.9	21.3
Operating Lease, Liability, Current	19.8	0.0
Income taxes payable	24.2	10.4
Accrued restructuring	20.3	27.1
Other current liabilities	173.9	149.2
Total other current liabilities	379.8	328.4
Operating Lease, Liability, Noncurrent	62.1	0.0
Other non-current liabilities
Income taxes payable	46.3	46.8
Self-insurance liabilities	44.0	47.7
Deferred compensation plan liabilities	20.4	20.9
Foreign currency contract liabilities	30.8	30.6
Other non-current liabilities	25.5	22.2
Total other non-current liabilities	$ 229.1	$ 168.2