LONG-TERM DEBT - SCHEDULE OF LONG-TERM DEBT (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Dec. 31, 2015
Debt Instrument [Line Items]
Total	$ 2,136		$ 683
Less debt issuance costs	(17)		(3)
Less current portion	275		114
Long-term debt, less current portion	$ 1,861		$ 569
Weighted-average fixed-interest rate	4.60%		5.70%
Weighted-average variable-interest rate	2.30%		1.80%
Repayments of Long-term Debt	$ 93	$ 93
Fixed-rate notes payable due through 2026 [Member]
Debt Instrument [Line Items]
Total	730		$ 520
Variable-rate notes payable due through 2028 [Member]
Debt Instrument [Line Items]
Total	$ 1,423		$ 166