CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Statement of Comprehensive Income [Abstract]
Net loss	$ (1,121.0)	$ (1,050.3)	$ (1,039.9)	$ (990.6)
Other comprehensive (loss) income, net of tax:
Foreign currency translation (loss) gain	(192.6)	222.0	(126.9)	271.7
Net gain (loss) on derivative financial instruments	29.6	(2.5)	17.6	(5.8)
Net realized holding gain on available for sale securities	0.0	0.0	(44.3)	0.0
Pension liability gain	3.0	1.1	4.2	2.3
Total other comprehensive (loss) income, net of tax	(160.0)	220.6	(149.4)	268.2
Total comprehensive loss	(1,281.0)	(829.7)	(1,189.3)	(722.4)
Less: Comprehensive income attributable to noncontrolling interests	0.8	0.3	1.3	0.1
Comprehensive loss attributable to Dentsply Sirona	$ (1,281.8)	$ (830.0)	$ (1,190.6)	$ (722.5)