CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Statement of Comprehensive Income [Abstract]
Net (loss) income	$ 36.4	$ (1,121.0)	$ 75.6	$ (1,039.9)
Other comprehensive (loss) income, net of tax:
Foreign currency translation gain (loss)	43.7	(192.6)	(17.3)	(126.9)
Net (loss) gain on derivative financial instruments	(9.8)	29.6	(8.1)	17.6
Net realized holding gain on available for sale securities	0.0	0.0	0.0	(44.3)
Pension liability gain	0.9	3.0	1.8	4.2
Total other comprehensive income (loss), net of tax	34.8	(160.0)	(23.6)	(149.4)
Total comprehensive income (loss)	71.2	(1,281.0)	52.0	(1,189.3)
Less: Comprehensive income attributable to noncontrolling interests	0.0	0.8	0.3	1.3
Total comprehensive income (loss) attributable to Dentsply Sirona	$ 71.2	$ (1,281.8)	$ 51.7	$ (1,190.6)