Fixed Assets and Asset Retirement Obligations (Schedule of Fixed Assets) (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Property, Plant and Equipment [Line Items]
Fixed assets, at cost	$ 5,464,040	$ 5,173,475
Less: Accumulated depreciation	(1,551,855)	(1,322,141)
Net fixed assets	3,912,185	3,851,334
Crude oil and natural gas pipelines and related assets
Property, Plant and Equipment [Line Items]
Fixed assets, at cost	2,839,443	2,811,030
Onshore facilities, machinery, and equipment
Property, Plant and Equipment [Line Items]
Fixed assets, at cost	269,245	267,810
Onshore facilities, machinery, and equipment | Alkali Business
Property, Plant and Equipment [Line Items]
Fixed assets, at cost	670,880	622,598
Transportation equipment
Property, Plant and Equipment [Line Items]
Fixed assets, at cost	21,106	19,470
Marine vessels
Property, Plant and Equipment [Line Items]
Fixed assets, at cost	1,018,284	998,553
Land, buildings and improvements
Property, Plant and Equipment [Line Items]
Fixed assets, at cost	227,540	219,382
Office equipment, furniture and fixtures
Property, Plant and Equipment [Line Items]
Fixed assets, at cost	23,965	22,001
Construction in progress
Property, Plant and Equipment [Line Items]
Fixed assets, at cost	350,137	170,740
Other
Property, Plant and Equipment [Line Items]
Fixed assets, at cost	$ 43,440	$ 41,891