SIGNIFICANT ACCOUNTING POLICIES - Reclassifications (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Amortization of intangible assets	$ 623	$ 673	$ 1,258	$ 1,351
Asset impairments	85	230	223	246
Operating income	$ (175)	(81)	$ (386)	(147)
Reclassification of Asset Impairment
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Amortization of intangible assets		673		1,351
Asset impairments		230		246
Acquired in-process research and development costs		2		3
Operating income		905		1,600
Reclassification of Asset Impairment | As Initially Reported
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Amortization of intangible assets		888		1,582
Asset impairments		0		0
Acquired in-process research and development costs		17		18
Operating income		905		1,600
Reclassification of Asset Impairment | Reclassification
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Amortization of intangible assets		(215)		(231)
Asset impairments		230		246
Acquired in-process research and development costs		(15)		(15)
Operating income		$ 0		$ 0