INCOME TAXES (Provision for Income Taxes) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Current Income Tax Expense (Benefit), Continuing Operations [Abstract]
U.S. Current Income Tax Expense	$ 485	$ 2,782	$ 1,144
Current Foreign Tax Expense (Benefit)	450	364	468
Total Current Income Tax Expense	935	3,146	1,612
Deferred Income Tax Expense (Benefit), Continuing Operations [Abstract]
U.S. Deferred Income Tax Expense/(Benefit)	29	1,063	(101)
Non-U.S. Deferred Income Tax Expense/(Benefit)	57	(53)	(103)
Total Deferred Income Tax Expense/(Benefit)	86	1,010	(204)
Provision for Income Taxes	$ 1,021	$ 4,156	$ 1,408