EARNINGS PER COMMON SHARE - EARNINGS PER SHARE COMPUTATION (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Basic Earnings Per Common Share Computation
Net income (loss) attributable to Dentsply Sirona	$ 36.4	$ (1,122.0)	$ 75.6	$ (1,040.8)
Weighted average common shares outstanding (in shares)	224.2	225.2	223.7	226.2
Earnings (loss) per common share - basic (in dollars per share)	$ 0.16	$ (4.98)	$ 0.34	$ (4.60)
Diluted Earnings Per Common Share Computation
Net income (loss) attributable to Dentsply Sirona	$ 36.4	$ (1,122.0)	$ 75.6	$ (1,040.8)
Weighted average common shares outstanding (in shares)	224.2	225.2	223.7	226.2
Incremental weighted average shares from assumed exercise of dilutive options from stock-based compensation awards (in shares)	1.5	0.0	1.6	0.0
Total weighted average diluted shares outstanding (in shares)	225.7	225.2	225.3	226.2
Earnings (loss) per common share - diluted (in dollars per share)	$ 0.16	$ (4.98)	$ 0.34	$ (4.60)