INCOME TAXES (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Dec. 31, 2016
Significant Change in Unrecognized Tax Benefits is Reasonably Possible [Line Items]
Effective income tax rate	1.30%	7.00%
Unrecognized tax benefits	$ 4,760		$ 4,692
Portion that, if recognized, would reduce tax expense and effective tax rate	2,894		2,886
Accrued interest on unrecognized tax benefits	682		615
Accrued penalties on unrecognized tax benefits	119		118
Lower limit
Significant Change in Unrecognized Tax Benefits is Reasonably Possible [Line Items]
Portion that, if recognized, would reduce tax expense and effective tax rate	0		0
Reasonably possible reduction to the balance of unrecognized tax benefits in succeeding 12 months	0		0
Upper limit
Significant Change in Unrecognized Tax Benefits is Reasonably Possible [Line Items]
Portion that, if recognized, would reduce tax expense and effective tax rate	500		500
Reasonably possible reduction to the balance of unrecognized tax benefits in succeeding 12 months	$ 600		$ 600