EARNINGS PER COMMON SHARE - COMPUTATION OF BASIC AND DILUTED EARNINGS PER COMMON SHARE (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Earnings Per Share [Abstract]
Net income attributable to Dentsply Sirona	$ 81.2	$ 59.8
Weighted average common shares outstanding (in shares)	227.2	230.1
Incremental weighted average shares from assumed exercise of dilutive options from stock-based compensation awards (in shares)	2.7	3.9
Total weighted average diluted shares outstanding (in shares)	229.9	234.0
Earnings per common share - diluted (in dollars per share)	$ 0.35	$ 0.26