VALUATION AND QUALIFYING ACCOUNTS (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Allowance for Doubtful Accounts And Notes Receivable
Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Year	$ 16	$ 16	$ 14
Charged to Costs and Expenses	1	4	4
Charged to Other Accounts	0	0	0
Deductions	1	4	2
Balance at End of Year	16	16	16
Deferred Tax Assets
Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Year	127	139	135
Charged to Costs and Expenses	18	15	15
Charged to Other Accounts	0	(3)	(3)
Deductions	0	(24)	(8)
Balance at End of Year	$ 145	$ 127	$ 139