Quarterly report pursuant to Section 13 or 15(d)

Construction Contract and Other Service Revenues - Performance Obligation Narrative (Details)

v3.21.2
Construction Contract and Other Service Revenues - Performance Obligation Narrative (Details) - Construction Contract Revenue
$ in Millions
Sep. 30, 2021
USD ($)
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Remaining performance obligations $ 159.2
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2021-10-01  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Remaining performance obligations $ 29.0
Revenue, remaining performance obligation, expected timing of satisfaction, period 3 months