EARNINGS PER COMMON SHARE - COMPUTATION OF BASIC AND DILUTED (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Earnings Per Share [Abstract]
Net (loss) income attributable to Dentsply Sirona	$ (83)	$ 263	$ (1,011)
Shares
Weighted average common shares outstanding (in shares)	219.2	223.1	224.3
(Loss) earnings per common share - basic (in dollars per share)	$ (0.38)	$ 1.18	$ (4.51)
Incremental weighted average shares from assumed exercise of dilutive options from stock-based compensation awards (in shares)	0.0	1.3	0.0
Diluted (in shares)	219.2	224.4	224.3
(Loss) earnings per common share
(Loss) earnings per common share - diluted (in dollars per share)	$ (0.38)	$ 1.17	$ (4.51)