GENERAL - Narrative (Details)	3 Months Ended
	Mar. 31, 2023
Summary of Significant Accounting Policies [Line Items]
Limited partner interest	49.50%
Non-voting limited partner interest	2.00%
WES Midstream segment
Summary of Significant Accounting Policies [Line Items]
Effective economic interest	51.60%
WES Midstream segment
Summary of Significant Accounting Policies [Line Items]
Non-voting general partner interest	2.30%