DEFERRED INCOME (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Deferred Income [Abstract]
Alliances	$ 1,459	$ 1,493
Other	130	444
Total deferred income	1,589	1,937
Current portion	1,003	1,167
Non-current portion	586	770
Deferred early access program		300
Amortization of deferred income	$ 307	$ 362	$ 548