BUSINESS COMBINATIONS - SUMMARY OF INTANGIBLE ASSETS (Details) - USD ($) $ in Millions		1 Months Ended	3 Months Ended
	Feb. 29, 2016	Sep. 30, 2016	Jun. 30, 2017	Dec. 31, 2017	Dec. 31, 2016
Acquired Finite-Lived Intangible Assets [Line Items]
Identifiable intangible assets, net				$ 2,800.7	$ 2,957.6
RTD
Acquired Finite-Lived Intangible Assets [Line Items]
Identifiable intangible assets, net			$ 49.0
RTD | Trade names and trademarks
Acquired Indefinite-lived Intangible Assets [Line Items]
Intangible assets acquired, amount			8.5
RTD | Customer relationships
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible assets acquired, amount			$ 18.1
Intangible assets acquired, useful life			15 years
RTD | Developed technology and patents
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible assets acquired, amount			$ 22.4
Intangible assets acquired, useful life			15 years
Sirona Dental Systems Inc
Acquired Indefinite-lived Intangible Assets [Line Items]
Identifiable intangible assets	$ 2,435.0
Acquired Finite-Lived Intangible Assets [Line Items]
Identifiable intangible assets, net	2,435.0
Sirona Dental Systems Inc | Trade names and trademarks
Acquired Indefinite-lived Intangible Assets [Line Items]
Intangible assets acquired, amount	905.0
Sirona Dental Systems Inc | Customer relationships
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible assets acquired, amount	$ 495.0
Intangible assets acquired, useful life	14 years
Sirona Dental Systems Inc | Developed technology and patents
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible assets acquired, amount	$ 1,035.0
Intangible assets acquired, useful life	12 years
MIS Implants Technologies Ltd. and Health Consumable Business
Acquired Indefinite-lived Intangible Assets [Line Items]
Identifiable intangible assets		$ 154.0
MIS Implants Technologies Ltd. and Health Consumable Business | Trade names and trademarks
Acquired Indefinite-lived Intangible Assets [Line Items]
Intangible assets acquired, amount		25.3
MIS Implants Technologies Ltd. and Health Consumable Business | Customer relationships
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible assets acquired, amount		$ 91.3
Intangible assets acquired, useful life		15 years
MIS Implants Technologies Ltd. and Health Consumable Business | Developed technology and patents
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible assets acquired, amount		$ 37.4
Intangible assets acquired, useful life		15 years