Fixed Assets, Mineral Leaseholds, and Asset Retirement Obligations (Fixed Assets, Net) (Details) - USD ($)	6 Months Ended
	Jun. 30, 2025	Dec. 31, 2024
Property, Plant and Equipment [Line Items]
Fixed assets, at cost	$ 5,342,394,000	$ 5,280,860,000
Less: Accumulated depreciation	(1,816,766,000)	(1,740,974,000)
Net fixed assets	3,525,628,000	3,539,886,000
Settlements	(1,321,000)
Asset retirement obligation balance	258,679,000	254,054,000
Accretion expense	5,946,000
Crude oil and natural gas pipelines and related assets
Property, Plant and Equipment [Line Items]
Fixed assets, at cost	3,507,121,000	3,367,908,000
Onshore facilities, machinery and equipment
Property, Plant and Equipment [Line Items]
Fixed assets, at cost	290,655,000	293,436,000
Transportation equipment
Property, Plant and Equipment [Line Items]
Fixed assets, at cost	24,273,000	22,976,000
Marine vessels
Property, Plant and Equipment [Line Items]
Fixed assets, at cost	1,067,572,000	1,062,720,000
Land, buildings and improvements
Property, Plant and Equipment [Line Items]
Fixed assets, at cost	88,545,000	88,545,000
Office equipment, furniture and fixtures
Property, Plant and Equipment [Line Items]
Fixed assets, at cost	10,337,000	10,101,000
Construction in progress(1)
Property, Plant and Equipment [Line Items]
Fixed assets, at cost	327,226,000	408,509,000
Other
Property, Plant and Equipment [Line Items]
Fixed assets, at cost	$ 26,665,000	$ 26,665,000