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v3.25.3

Business Segment Information (Schedule of Total Assets and Total Growth and Maintenance Capital Expenditures by Reportable Segment) (Details) $ in Thousands | 9 Months Ended |
--- | --- | ---
Sep. 30, 2025 USD ($) | Sep. 30, 2024 USD ($) | Dec. 31, 2024 USD ($)
Segment Reporting Information [Line Items] |  |  |
Assets | $ 4,869,720 |  | $ 7,037,692
Assets held for discontinued operations | 0 |  | 2,207,420
Capital Expenditures | $ 122,371 | $ 292,742 |
Costs incurred, percentage | 1 | 1 |
Operating Segments |  |  |
Segment Reporting Information [Line Items] |  |  |
Assets | $ 4,834,354 |  | 4,790,616
Capital Expenditures | 121,381 | $ 282,082 |
Operating Segments | Offshore pipeline transportation |  |  |
Segment Reporting Information [Line Items] |  |  |
Assets | 2,770,893 |  | 2,748,296
Capital Expenditures | 75,332 | 193,875 |
Operating Segments | Marine transportation |  |  |
Segment Reporting Information [Line Items] |  |  |
Assets | 624,419 |  | 641,082
Capital Expenditures | 40,393 | 72,266 |
Operating Segments | Onshore transportation and services |  |  |
Segment Reporting Information [Line Items] |  |  |
Assets | 1,439,042 |  | 1,401,238
Capital Expenditures | 5,656 | 15,941 |
Other assets |  |  |
Segment Reporting Information [Line Items] |  |  |
Assets | 35,366 |  | $ 39,656
Other |  |  |
Segment Reporting Information [Line Items] |  |  |
Capital Expenditures | $ 990 | $ 10,660 |

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