CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Statement of Comprehensive Income [Abstract]
Net income	$ 39.2	$ 81.1
Other comprehensive (loss) income, net of tax:
Foreign currency translation (loss) gain	(61.0)	65.7
Net gain (loss) on derivative financial instruments	1.7	(12.0)
Net realized holding gain on available for sale securities	0.0	(44.3)
Pension liability gain	0.9	1.2
Total other comprehensive (loss) income, net of tax	(58.4)	10.6
Total comprehensive (loss) income	(19.2)	91.7
Less: Comprehensive income attributable to noncontrolling interests	0.3	0.5
Total comprehensive (loss) income attributable to Dentsply Sirona	$ (19.5)	$ 91.2