Quarterly report pursuant to Section 13 or 15(d)

Revenue - Remaining Performance Obligations (Details)

v3.10.0.1
Revenue - Remaining Performance Obligations (Details)
$ in Millions
Dec. 31, 2018
USD ($)
Revenue from Contract with Customer [Abstract]
Remaining performance obligation $ 1,660
Minimum | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2020-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Remaining performance obligation, percentage 5.00%
Maximum | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2020-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Remaining performance obligation, percentage 15.00%
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