SIGNIFICANT ACCOUNTING POLICIES - ADDITIONAL INFORMATION (Detail) $ in Millions	12 Months Ended
	Dec. 31, 2015 USD ($) segment Country	Dec. 31, 2014 USD ($)	Dec. 31, 2013 USD ($)
Significant Accounting Policies [Line Items]
Number of countries in which entity operates | Country	120
Cost of inventories determined by LIFO method	$ 8.1	$ 6.3
Cost of inventories determined by LIFO method, amount of increase if FIFO method was used	6.6	6.1
Foreign currency translation adjustments	(188.1)	(354.1)	$ 88.9
Net exchange gains (losses)	5.2	1.3	9.0
Precious metal content of sales	92.8	129.9	179.1
R&D costs included in selling, general and administrative expenses	$ 74.9	80.8	85.1
Number of reportable segments | segment	3
Other noncurrent assets, net	$ 59.1	90.6
Notes payable and current portion of long-term debt	12.1	111.8
Long-term debt	1,141.0	1,150.1
Scenario, Previously Reported | Adjustments for New Accounting Principle, Early Adoption
Significant Accounting Policies [Line Items]
Other noncurrent assets, net		94.4
Notes payable and current portion of long-term debt		112.8
Long-term debt		1,152.9
Restatement Adjustment | Adjustments for New Accounting Principle, Early Adoption
Significant Accounting Policies [Line Items]
Other noncurrent assets, net		(3.8)
Notes payable and current portion of long-term debt		(1.0)
Long-term debt		(2.8)
Precious Metal Content
Significant Accounting Policies [Line Items]
Precious metal content of sales	$ 92.8	$ 129.9	$ 179.1
Dental Products
Significant Accounting Policies [Line Items]
Percentage of sales, professional dental products	88.00%	88.00%	88.00%
Foreign Currency Translation Adjustments
Significant Accounting Policies [Line Items]
Foreign currency translation adjustments recorded in AOCI net of tax effects	$ 187.2	$ 366.9
Gain and (Loss) on Derivative Financial Instruments Designated as Cash Flow Hedges
Significant Accounting Policies [Line Items]
Foreign currency translation adjustments	$ 1.7	13.5
Building
Significant Accounting Policies [Line Items]
Useful life (in years)	40 years
Machinery and equipment | Minimum
Significant Accounting Policies [Line Items]
Useful life (in years)	4 years
Machinery and equipment | Maximum
Significant Accounting Policies [Line Items]
Useful life (in years)	15 years
Trade Accounts Receivable
Significant Accounting Policies [Line Items]
Allowance for doubtful accounts	$ 10.7	8.8
Allowance for doubtful accounts receivable, write-offs	2.2	2.4
Provision for doubtful accounts	$ 4.3	$ 1.7