STOCK-BASED COMPENSATION Schedule of Stock-Based Compensation Expense Related to Income Tax Benefits (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Income tax benefits related to stock-based compensation	$ (2)	$ (6)	$ 31	$ 16
Selling, General and Administrative Expenses [Member]
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Total stock-based compensation expense (selling and administrative)	$ 31	$ 35	$ 94	$ 102