ACQUISITIONS AND OTHER ARRANGEMENTS - Cheetah Medical, Inc. Narrative (Details) - USD ($) $ in Millions		3 Months Ended		6 Months Ended		12 Months Ended
	Oct. 25, 2019	Mar. 31, 2019	Mar. 31, 2018	Jun. 30, 2019	Jun. 30, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Oct. 31, 2019
Acquisitions And Collaborations [Line Items]
Total cash consideration, net of cash acquired		$ 109	$ 219	$ 111	$ 228	$ 418	$ 268	$ 686
Cheetah Medical, Inc.
Acquisitions And Collaborations [Line Items]
Percentage of ownership acquired	100.00%
Total cash consideration, net of cash acquired	$ 195
Maximum contingent future payments	40
Contingent consideration	18
Integration costs						$ 3
Other intangible assets	$ 131
Cheetah Medical, Inc. | Developed Product Rights
Acquisitions And Collaborations [Line Items]
Other intangible assets									$ 123
Acquired intangible assets, weighted-average useful life	15 years
Cheetah Medical, Inc. | Customer Relationship
Acquisitions And Collaborations [Line Items]
Other intangible assets	$ 8
Acquired intangible assets, weighted-average useful life	13 years
Cheetah Medical, Inc. | Measurement Input Discount Rate | Developed Product Rights
Acquisitions And Collaborations [Line Items]
Discount rate used to measure intangible assets	0.110
Cheetah Medical, Inc. | Measurement Input Discount Rate | Customer Relationship
Acquisitions And Collaborations [Line Items]
Discount rate used to measure intangible assets	0.100