Supplemental Balance Sheet Information (Detail) - USD ($) $ in Millions	Jun. 30, 2018	Jan. 01, 2018	Dec. 31, 2017
Inventories
Raw materials and supplies	$ 198.3		$ 190.8
Work-in-process	62.9		57.9
Finished goods	105.4		108.2
Total inventories	366.6	$ 355.3	356.9
Other current assets
Cost in excess of billings	49.3		51.5
Prepaid expenses	56.3		51.4
Prepaid income taxes	14.0		7.8
Other current assets	9.6		3.8
Total other current assets	129.2	116.1	114.5
Property, plant and equipment, net
Land and land improvements	33.9		33.5
Buildings and leasehold improvements	175.4		184.3
Machinery and equipment	607.0		609.6
Construction in progress	30.4		23.7
Total property, plant and equipment	846.7		851.1
Accumulated depreciation and amortization	576.1		571.3
Total property, plant and equipment, net	270.6		279.8
Other non-current assets
Prepaid income taxes	0.0		52.8
Prepaid income taxes	29.9		29.0
Deferred compensation plan assets	24.9		23.2
Other non-current assets	98.7		75.9
Total other non-current assets	153.5	136.0	180.9
Other current liabilities
Dividends payable	30.7		63.1
Accrued warranty	42.7		38.1
Accrued rebates	62.6		49.8
Billings in excess of cost	19.1		20.1
Income taxes payable	10.7		39.7
Accrued restructuring	33.0		34.5
Other current liabilities	158.0		156.0
Total other current liabilities	356.8	$ 404.0	401.3
Other non-current liabilities
Income taxes payable	50.9		61.3
Self-insurance liabilities	54.8		48.3
Deferred compensation plan liabilities	24.9		23.2
Foreign Currency Contracts, Liability, Fair Value Disclosure	39.8		47.2
Other non-current liabilities	31.1		33.8
Total other non-current liabilities	$ 201.5		$ 213.8