Revenue from Contracts with Customers - Performance Obligations (Details) $ in Billions |
Sep. 30, 2026
USD ($)
|
|---|---|
| Disaggregation of Revenue [Line Items] | |
| Remaining performance obligations | $ 24.0 |
| Boardwalk Pipelines | |
| Disaggregation of Revenue [Line Items] | |
| Remaining performance obligations | 9.6 |
| Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2026-10-01 | |
| Disaggregation of Revenue [Line Items] | |
| Remaining performance obligations | $ 1.0 |
| Expected timing of satisfaction | 3 months |
| Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2027-01-01 | |
| Disaggregation of Revenue [Line Items] | |
| Remaining performance obligations | $ 2.7 |
| Expected timing of satisfaction | 1 year |