COMMITMENTS AND CONTINGENCIES (Details) - item	1 Months Ended			3 Months Ended
	Jul. 31, 2018	Apr. 30, 2017	May 31, 2016	Mar. 31, 2020
Environmental matters
Number of locations for environmental assessments and remediation				40
Deepwater Horizon Incident
Loss contingencies
Number of putative class action complaints filed				6
Number of complaints filed by individuals		2	9	21
Period to appeal court's decision after entry of final judgment under Federal Rule of Appellate Procedure				30 days
Number of cases pending that are expected to be dismissed	3