Equity and Partners' Capital - Additional Information (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2025	Feb. 20, 2025	Dec. 31, 2024
Schedule of Investments [Line Items]
Common units outstanding	381,327,148		380,556,643
General partner units outstanding	9,060,641		9,060,641
Unit repurchases, authorized amount		$ 250.0
Unit repurchases, remaining authorized amount	$ 250.0
Public [Member]
Schedule of Investments [Line Items]
Unit repurchases, number of units	0
WES [Member] | Public [Member]
Schedule of Investments [Line Items]
Common units outstanding	215,645,570
Limited partner's interest	55.20%
Occidental [Member] | WES [Member]
Schedule of Investments [Line Items]
Common units outstanding	165,681,578
Limited partner's interest	42.50%
General partner units outstanding	9,060,641
General partner's interest	2.30%