v3.26.1
Revenue Recognition (Revenue Expected to be Recognized in Future Periods) (Details)
Jun. 30, 2026
USD ($)
Offshore pipeline transportation  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Revenue expected to be recognized in future periods $ 518,276,000
Onshore transportation and services  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Revenue expected to be recognized in future periods 40,563,000
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 110,626,000
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 $ 15,146,000
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 $ 165,169,000
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 $ 12,917,000
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 $ 83,513,000
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 $ 10,000,000
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 $ 50,240,000
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 $ 2,500,000
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 $ 41,682,000
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 $ 0
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 $ 67,046,000
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