ACQUISITIONS AND OTHER ARRANGEMENTS - Summary of Fair Value of Assets Acquired and Liabilities Assumed for Cheetah Medical, Inc. (Details) - USD ($) $ in Millions	Dec. 31, 2019	Oct. 25, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017
Acquisitions And Collaborations [Line Items]
Goodwill	$ 3,030		$ 2,937	$ 2,929	$ 3,002	$ 2,978	$ 2,981	$ 3,103	$ 3,102
Cheetah Medical, Inc.
Acquisitions And Collaborations [Line Items]
Cash		$ 2
Accounts receivable, net		3
Inventories		1
Prepaid expenses and other current assets		1
Property, plant and equipment		1
Goodwill		111
Other intangible assets		131
Operating lease right-of-use assets		1
Accounts payable and other accrued liabilities		(4)
Other non-current liabilities		(32)
Total assets acquired and liabilities assumed		$ 215