Supplemental Balance Sheet Information (Detail) - USD ($) $ in Millions	Sep. 30, 2018	Jan. 01, 2018	Dec. 31, 2017
Inventories
Raw materials and supplies	$ 205.9		$ 190.8
Work-in-process	66.2		57.9
Finished goods	115.2		108.2
Total inventories	387.3	$ 355.3	356.9
Other current assets
Cost in excess of billings	44.8		51.5
Prepaid expenses	59.4		51.4
Prepaid income taxes	12.5		7.8
Other current assets	18.5		3.8
Total other current assets	135.2	116.1	114.5
Property, plant and equipment, net
Land and land improvements	34.0		33.5
Buildings and leasehold improvements	179.0		184.3
Machinery and equipment	614.2		609.6
Construction in progress	34.8		23.7
Total property, plant and equipment	862.0		851.1
Accumulated depreciation and amortization	587.8		571.3
Total property, plant and equipment, net	274.2		279.8
Other non-current assets
Prepaid income taxes	0.0		52.8
Prepaid income taxes	29.6		29.0
Deferred compensation plan assets	27.5		23.2
Other non-current assets	102.2		75.9
Total other non-current assets	159.3	136.0	180.9
Other current liabilities
Dividends payable	30.4		63.1
Accrued warranty	38.0		38.1
Accrued rebates	65.9		49.8
Billings in excess of cost	15.9		20.1
Income taxes payable	24.3		39.7
Accrued restructuring	30.6		34.5
Other current liabilities	156.0		156.0
Total other current liabilities	361.1	$ 404.0	401.3
Other non-current liabilities
Income taxes payable	51.0		61.3
Self-insurance liabilities	59.4		48.3
Deferred compensation plan liabilities	27.5		23.2
Foreign currency contract liabilities	45.5		47.2
Other non-current liabilities	23.6		33.8
Total other non-current liabilities	$ 207.0		$ 213.8