STOCKHOLDERS' EQUITY STOCKHOLDERS' EQUITY (Tax Benefit (Expense)) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Other Comprehensive Income (Loss), Tax	$ 288	$ (233)	$ 46
Accumulated Net Investment Gain (Loss) Attributable to Parent [Member]
Other Comprehensive Income (Loss), Tax	(26)	2	(52)
Accumulated Foreign Currency Adjustment Attributable to Parent [Member]
Other Comprehensive Income (Loss), Tax	98	171	(84)
Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member]
Other Comprehensive Income (Loss), Tax	213	(438)	252
Derivative Instruments
Other Comprehensive Income (Loss), Tax	$ 3	$ 32	$ (70)