Derivatives (Schedule of Effect on Operating Results) (Details) - Commodity Derivatives - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2026	Sep. 30, 2025	Sep. 30, 2026	Sep. 30, 2025
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Recognized in Income (Loss)	$ 1,114	$ (39)	$ (7,110)	$ 506
Contracts designated as hedges under accounting guidance | Onshore transportation and services product costs
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Recognized in Income (Loss)	(9)	(44)	(5,925)	1,043
Contracts not considered hedges under accounting guidance | Onshore transportation and services product costs; Offshore pipeline transportation operating costs
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Recognized in Income (Loss)	$ 1,123	$ 5	$ (1,185)	$ (537)