COMMITMENTS AND CONTINGENCIES Narrative (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Dec. 31, 2018
Loss Contingencies [Line Items]
Loss Contingency Accrual	$ 21		$ 16
Loss Contingency Accrual, Payments	0	$ 7
Other Commitment	494
Capital Expenditures Incurred but Not yet Paid	52	$ 81
Surety Bonds [Member]
Loss Contingencies [Line Items]
Other Commitment	177
Revolving Credit Facility [Member] | Letter of Credit [Member]
Loss Contingencies [Line Items]
Letters of credit outstanding	$ 277