INCOME TAX (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Current Income Tax Expense (Benefit), Continuing Operations [Abstract]
U.S. Federal	$ 8	$ (21)	$ 2,061
U.S. State	43	89	62
Non-U.S.	1,099	1,177	787
Current tax expense	1,150	1,245	2,910
Deferred Income Tax Expense (Benefit), Continuing Operations [Abstract]
U.S. Federal	332	396	190
U.S. State	63	8	139
Non-U.S.	(216)	(990)	2,123
Deferred tax expense	179	(586)	2,452
Tax expense	1,329	659	5,362
Income before taxes
U.S.	4,178	2,919	2,873
Non-U.S.	3,381	4,568	4,077
Income before taxes	$ 7,559	$ 7,487	$ 6,950