INCOME TAXES (Unrecognized Tax Benefits) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Significant Change in Unrecognized Tax Benefits is Reasonably Possible [Line Items]
Unrecognized tax benefits that would impact effective tax rate	$ 854	$ 671	$ 668
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Balance at beginning of year	944	934	756
Gross additions to tax positions related to current year	49	52	106
Gross additions to tax positions related to prior years	49	56	218
Gross additions to tax positions assumed in acquisitions	1	1
Gross reductions to tax positions related to prior years	(22)	(34)	(57)
Settlements	(13)	(46)	(65)
Reductions to tax positions related to lapse of statute	(4)	(9)	(12)
Cumulative translation adjustment	(9)	(10)	(12)
Balance at end of year	995	944	934
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued [Abstract]
Accrued interest	112	93	96
Accrued penalties	17	16	17
Unrecognized Tax Benefits, Income Tax Penalties and Interest Expense [Abstract]
Interest expense	22	2	27
Penalty expense/(benefit)	4	$ 1	$ (7)
Minimum [Member]
Significant Change in Unrecognized Tax Benefits is Reasonably Possible [Line Items]
Estimated decrease in total amount of unrecognized tax benefits	255
Maximum [Member]
Significant Change in Unrecognized Tax Benefits is Reasonably Possible [Line Items]
Estimated decrease in total amount of unrecognized tax benefits	$ 315