Quarterly report pursuant to Section 13 or 15(d)

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

v3.19.1
Costs and Estimated Earnings on Uncompleted Contracts - Narrative (Details)
$ in Millions
Mar. 31, 2019
USD ($)
Revenue from Contract with Customer [Abstract]  
Remaining performance obligation, amount $ 525
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2019-04-01  
Revenue from Contract with Customer [Abstract]  
Remaining performance obligation, amount $ 187
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Performance obligation, expected timing of satisfaction, period 6 months