RESTRUCTURING AND INTEGRATION COSTS - Schedule of Salix Restructuring Costs (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Restructuring reserve
Costs incurred and charged to expense	$ 132	$ 362	$ 382
Salix
Restructuring reserve
Balance at the beginning of the period	36	0
Costs incurred and charged to expense	7	92
Cash payments	(34)	(58)
Non-cash adjustments		2
Balance at the end of the period	9	36	0
Severance and Related Benefits | Salix
Restructuring reserve
Balance at the beginning of the period	35	0
Costs incurred and charged to expense	(3)	91
Cash payments	(30)	(58)
Non-cash adjustments		2
Balance at the end of the period	2	35	0
Contract Termination, Facility Closures and Other | Salix
Restructuring reserve
Balance at the beginning of the period	1	0
Costs incurred and charged to expense	10	1
Cash payments	(4)	0
Non-cash adjustments		0
Balance at the end of the period	$ 7	$ 1	$ 0