Fixed Assets and Asset Retirement Obligations (Schedule of Fixed Assets) (Details) - USD ($)	Dec. 31, 2024	Dec. 31, 2023
Property, Plant and Equipment [Line Items]
Fixed assets, at cost	$ 6,874,455,000	$ 6,500,897,000
Less: Accumulated depreciation	(2,206,947,000)	(1,972,596,000)
Net fixed assets	4,667,508,000	4,528,301,000
Crude oil and natural gas pipelines and related assets
Property, Plant and Equipment [Line Items]
Fixed assets, at cost	3,367,908,000	2,945,215,000
Onshore facilities, machinery, and equipment
Property, Plant and Equipment [Line Items]
Fixed assets, at cost	293,436,000	271,271,000
Onshore facilities, machinery, and equipment | Alkali Business
Property, Plant and Equipment [Line Items]
Fixed assets, at cost	1,246,786,000	1,147,291,000
Transportation equipment
Property, Plant and Equipment [Line Items]
Fixed assets, at cost	32,662,000	24,913,000
Marine vessels
Property, Plant and Equipment [Line Items]
Fixed assets, at cost	1,062,720,000	1,021,080,000
Land, buildings and improvements
Property, Plant and Equipment [Line Items]
Fixed assets, at cost	307,713,000	293,733,000
Office equipment, furniture and fixtures
Property, Plant and Equipment [Line Items]
Fixed assets, at cost	26,230,000	25,029,000
Construction in progress(1)
Property, Plant and Equipment [Line Items]
Fixed assets, at cost	510,335,000	731,197,000
Other
Property, Plant and Equipment [Line Items]
Fixed assets, at cost	$ 26,665,000	$ 41,168,000