INCOME TAXES (Operating Loss and Tax Credit Carryforwards) (Details) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	$ 1,396	$ 1,441
Tax credit carryforwards	524	638
Total operating loss and tax credit carryforwards	1,920	2,079
Undistributed earnings of foreign subsidiaries	6,851	6,014
Expiring Within Five Years [Member]
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	263	245
Tax credit carryforwards	32	32
Expiring After Five Years or Having Indefinite Expiration [Member]
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	1,133	1,196
Tax credit carryforwards	$ 492	$ 606