SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - RISKS AND UNCERTAINTIES (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
RISKS AND UNCERTAINTIES
Assets	$ 42,026	$ 43,109	$ 43,409
Net sales	12,508	$ 10,090	$ 12,480
Outside North America
RISKS AND UNCERTAINTIES
Assets	9,800
Net sales	$ 4,400