Supplemental Balance Sheet Information (Detail) - USD ($) $ in Millions	Dec. 31, 2018	Jan. 01, 2018	Dec. 31, 2017	Dec. 31, 2016
Inventories
Raw materials and supplies	$ 191.3		$ 190.8
Work-in-process	64.0		57.9
Finished goods	132.2		108.2
Total inventories	387.5	$ 355.3	356.9
Other current assets
Cost in excess of billings	36.5		51.5
Prepaid expenses	36.7		51.4
Deferred income taxes	8.5		7.8
Other Current Assets	7.7		3.8
Total other current assets	89.4	116.1	114.5
Property, plant and equipment, net
Land and land improvements	33.5		33.5
Buildings and leasehold improvements	178.9		184.3
Machinery and equipment	593.8		609.6
Construction in progress	35.7		23.7
Total property, plant and equipment	841.9		851.1
Accumulated depreciation and amortization	569.3		571.3
Total property, plant and equipment, net	272.6		279.8
prepaid taxes long term	26.2		29.0
Other non-current assets
Prepaid Taxes, Noncurrent	0.0		52.8
Deferred Compensation Plan Assets	20.9		23.2
Other non-current assets	98.4		75.9
Total other non-current assets	145.5	136.0	180.9
Other current liabilities
Dividends payable	30.8		63.1
Accrued warranty	33.9		38.1
Accrued Exchange Fee Rebate	55.7		49.8
Billings in excess of cost	21.3		20.1
Taxes Payable	10.4		39.7
Restructuring Reserve	27.1		34.5	$ 15.1
Other current liabilities	149.2		156.0
Total other current liabilities	328.4	$ 404.0	401.3
Other non-current liabilities
Taxes payable	46.8		61.3
Self Insurance Reserve, Noncurrent	47.7		48.3
Deferred Compensation Liability, Current	20.9		23.2
Foreign Currency Contracts, Liability, Fair Value Disclosure	30.6		47.2
Other non-current liabilities	22.2		33.8
Total other non-current liabilities	$ 168.2		$ 213.8