SEGMENT AND GEOGRAPHIC INFORMATION - NET SALES, EXCLUDING PRECIOUS METAL CONTENT (Details) - USD ($) $ in Millions	3 Months Ended								9 Months Ended	12 Months Ended
	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Sep. 30, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Segment Reporting Information [Line Items]
Total net sales, excluding precious metal content	$ 645.9	$ 629.4	$ 674.7	$ 631.5	$ 691.0		$ 730.9	$ 689.2	$ 681.6	$ 2,581.5	$ 2,792.7	$ 2,771.7
Precious metal content of sales										92.8	129.9	179.1
Total net sales, including precious metal content	$ 671.1	$ 648.9	$ 698.0	$ 656.3	$ 719.1	$ 708.2	$ 765.2	$ 730.1		2,674.3	2,922.6	2,950.8
Operating Segments | Dental Consumables, Endodontic and Dental Laboratory Businesses
Segment Reporting Information [Line Items]
Total net sales, excluding precious metal content										1,155.6	1,208.1	1,197.1
Total net sales, including precious metal content										1,223.3	1,308.8	1,346.1
Operating Segments | Healthcare, Orthodontic and Implant Businesses
Segment Reporting Information [Line Items]
Total net sales, excluding precious metal content										968.5	1,066.7	1,059.0
Total net sales, including precious metal content										969.1	1,067.5	1,059.9
Operating Segments | Select Developed and Emerging Markets Businesses
Segment Reporting Information [Line Items]
Total net sales, excluding precious metal content										457.4	517.9	515.6
Total net sales, including precious metal content										$ 481.9	$ 546.3	$ 544.8