Supplemental Balance Sheet Information (Detail) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Inventories
Raw materials and supplies	$ 196.2	$ 191.3
Work-in-process	65.2	64.0
Finished goods	116.0	132.2
Total inventories	377.4	387.5
Other current assets
Cost in excess of billings	41.0	36.5
Prepaid expenses	48.3	36.7
Deferred income taxes	5.2	8.5
Other Current Assets	4.6	7.7
Total other current assets	99.1	89.4
Property, plant and equipment, net
Land and land improvements	33.7	33.5
Buildings and leasehold improvements	188.1	178.9
Machinery and equipment	610.7	593.8
Construction in progress	48.1	35.7
Total property, plant and equipment	880.6	841.9
Accumulated depreciation and amortization	597.4	569.3
Total property, plant and equipment, net	283.2	272.6
prepaid taxes long term	29.6	26.2
Other non-current assets
Deferred Compensation Plan Assets	21.3	20.9
Other non-current assets	68.8	98.4
Total other non-current assets	196.9	145.5
Operating Lease, Right-of-Use Asset	77.2	0.0
Other current liabilities
Dividends payable	32.0	30.8
Accrued warranty	32.1	33.9
Accrued Exchange Fee Rebate	83.5	76.9
Billings in excess of cost	22.5	21.3
Operating Lease, Liability, Current	19.0	0.0
Taxes Payable	11.1	10.4
Restructuring Reserve	16.2	27.1	$ 34.5
Other current liabilities	136.5	128.0
Total other current liabilities	352.9	328.4
Operating Lease, Liability, Noncurrent	61.1	0.0
Other non-current liabilities
Taxes payable	45.4	46.8
Self Insurance Reserve, Noncurrent	41.6	47.7
Deferred Compensation Liability, Current	21.3	20.9
Foreign Currency Contracts, Liability, Fair Value Disclosure	11.6	30.6
Other non-current liabilities	25.7	22.2
Total other non-current liabilities	$ 206.7	$ 168.2