Fixed Assets and Asset Retirement Obligations (Tables)

9 Months Ended

Sep. 30, 2026

Fixed Assets And Asset Retirement Obligations [Abstract]

Schedule of Fixed Assets

Fixed assets consisted of the following: 

	September 30, 2026		December 31, 2025
Crude oil and natural gas pipelines and related assets	$	3,846,584	$	3,845,631
Onshore facilities, machinery and equipment	295,814		291,896
Transportation equipment	24,145		24,026
Marine vessels	1,073,299		1,073,262
Land, buildings and improvements	88,899		88,629
Office equipment, furniture and fixtures	13,108		10,317
Construction in progress	27,749		13,634
Other	25,897		26,665
Fixed assets, at cost	5,395,495		5,374,060
Less: Accumulated depreciation	(2,023,354)		(1,908,737)
Net fixed assets	$	3,372,141	$	3,465,323

Schedule of Depreciation and Depletion Expense

Our depreciation expense for the periods presented was as follows:

	Three Months Ended September 30,				Nine Months Ended September 30,
	2026		2025		2026		2025
Depreciation expense	$	58,484	$	54,486	$	175,506	$	161,433

Schedule of Change in Asset Retirement Obligation

The following table presents information regarding our AROs since December 31, 2025:

ARO liability balance, December 31, 2025	$	266,348
Accretion expense	6,554
Revisions in timing and estimated costs of AROs	654
Divestitures(1)	(12,717)
Settlements	(4,183)
ARO liability balance, September 30, 2026	$	256,656

(1) In June 2026, we divested certain non-core natural gas pipeline and platform assets in our offshore pipeline transportation segment.