XML 60 R49.htm IDEA: XBRL DOCUMENT v3.24.2.u1
Revenue from contracts with customers - Narrative (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2024
Jun. 30, 2023
Jun. 30, 2024
Jun. 30, 2023
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]        
Construction contractor, contract cost, subject to uncertainty, amount $ 31.2   $ 31.2  
Contract with customer, liability, revenue recognized 24.1 $ 23.4 121.7 $ 157.9
Amounts from performance obligations satisfied in prior periods 35.5 $ 23.1 58.0 $ 31.8
Remaining performance obligation, amount 3,000.0   3,000.0  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2024-07-01        
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]        
Remaining performance obligation, amount $ 2,100.0   $ 2,100.0  
Revenue, remaining performance obligation, expected timing of satisfaction, period 12 months   12 months  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2025-07-01        
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]        
Remaining performance obligation, amount $ 435.4   $ 435.4  
Revenue, remaining performance obligation, expected timing of satisfaction, period 12 months   12 months  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2026-07-01        
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]        
Remaining performance obligation, amount $ 506.7   $ 506.7  
Revenue, remaining performance obligation, expected timing of satisfaction, period    
Construction services        
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]        
Contract with customer, term (less than) 2 years   2 years  
Pipeline        
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]        
Contract with customer, term (less than) 12 months   12 months  
Pipeline | Firm Transportation Contract        
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]        
Contract weighted average remaining duration (less than) 5 years   5 years  
Pipeline | Firm Storage Contract        
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]        
Contract weighted average remaining duration (less than) 2 years   2 years