Quarterly report pursuant to Section 13 or 15(d)

Costs and Estimated Earnings on Uncompleted Contracts - Narrative (Details)

v3.19.2
Costs and Estimated Earnings on Uncompleted Contracts - Narrative (Details)
$ in Millions
Jun. 30, 2019
USD ($)
Revenue from Contract with Customer [Abstract]  
Remaining performance obligation, amount $ 522
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2019-07-01  
Revenue from Contract with Customer [Abstract]  
Remaining performance obligation, amount $ 321
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Performance obligation, expected timing of satisfaction, period 3 months