ALLIANCES (Valeant) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Alliances Statement [Line Items]
Divestiture and other proceeds	$ 722	$ 1,334	$ 708
Alliance revenues	1,518	1,725	2,515
Divestiture gain	161	564	194
Other changes in operating assets and liabilities	227	(216)	(617)
Divestiture and other proceeds	$ 651	$ 1,317	697
Valeant [Member]
Alliances Statement [Line Items]
Divestiture and other proceeds			61
Divestiture gain			$ 88