INCOME TAXES (Operating Loss and Tax Credit Carryforwards) (Details) - USD ($) $ in Millions	Dec. 31, 2018	Dec. 31, 2017
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	$ 1,587	$ 1,551
Tax credit carryforwards	657	183
Total operating loss and tax credit carryforwards	2,244	1,734
Undistributed earnings of foreign subsidiaries	6,800	7,052
Expire within 5 years
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	268	246
Tax credit carryforwards	32	39
Expire after 5 years or indefinite expiration
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	1,319	1,305
Tax credit carryforwards	$ 625	$ 144