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Revenue Recognition (Revenue Expected to be Recognized in Future Periods) (Details) | Sep. 30, 2025 USD ($)
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Offshore pipeline transportation |
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] |
Revenue expected to be recognized in future periods | $ 586,159,000
Onshore transportation and services |
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] |
Revenue expected to be recognized in future periods | 63,927,000
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2025-10-01 | Offshore pipeline transportation |
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] |
Revenue expected to be recognized in future periods | 63,574,000
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2025-10-01 | Onshore transportation and services |
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] |
Revenue expected to be recognized in future periods | $ 7,474,000
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2025-10-01 | Offshore Pipeline Transportation |
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] |
Revenue expected timing of satisfaction period | 3 months
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2025-10-01 | Onshore Facilities and Transportation |
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] |
Revenue expected timing of satisfaction period | 3 months
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2026-01-01 | Offshore pipeline transportation |
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] |
Revenue expected to be recognized in future periods | $ 208,220,000
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2026-01-01 | Onshore transportation and services |
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] |
Revenue expected to be recognized in future periods | $ 29,931,000
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2026-01-01 | Offshore Pipeline Transportation |
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] |
Revenue expected timing of satisfaction period | 1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2026-01-01 | Onshore Facilities and Transportation |
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] |
Revenue expected timing of satisfaction period | 1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2027-01-01 | Offshore pipeline transportation |
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] |
Revenue expected to be recognized in future periods | $ 139,001,000
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2027-01-01 | Onshore transportation and services |
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] |
Revenue expected to be recognized in future periods | $ 14,022,000
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2027-01-01 | Offshore Pipeline Transportation |
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] |
Revenue expected timing of satisfaction period | 1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2027-01-01 | Onshore Facilities and Transportation |
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] |
Revenue expected timing of satisfaction period | 1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2028-01-01 | Offshore pipeline transportation |
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] |
Revenue expected to be recognized in future periods | $ 61,214,000
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2028-01-01 | Onshore transportation and services |
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] |
Revenue expected to be recognized in future periods | $ 10,000,000
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2028-01-01 | Offshore Pipeline Transportation |
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] |
Revenue expected timing of satisfaction period | 1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2028-01-01 | Onshore Facilities and Transportation |
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] |
Revenue expected timing of satisfaction period | 1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2029-01-01 | Offshore pipeline transportation |
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] |
Revenue expected to be recognized in future periods | $ 30,361,000
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2029-01-01 | Onshore transportation and services |
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] |
Revenue expected to be recognized in future periods | $ 2,500,000
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2029-01-01 | Offshore Pipeline Transportation |
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] |
Revenue expected timing of satisfaction period | 1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2029-01-01 | Onshore Facilities and Transportation |
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] |
Revenue expected timing of satisfaction period | 1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2030-01-01 | Offshore pipeline transportation |
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] |
Revenue expected to be recognized in future periods | $ 83,789,000
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2030-01-01 | Onshore transportation and services |
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] |
Revenue expected to be recognized in future periods | $ 0
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2030-01-01 | Offshore Pipeline Transportation |
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] |
Revenue expected timing of satisfaction period | 1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2030-01-01 | Onshore Facilities and Transportation |
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] |
Revenue expected timing of satisfaction period | 1 year

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- Definition Period in which remaining performance obligation is expected to be recognized as revenue, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name Accounting Standards Codification -Section 50 -Paragraph 13 -Subparagraph (b)(1) -SubTopic 10 -Topic 606 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479806/606-10-50-13 + Details
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