Quarterly report pursuant to Section 13 or 15(d)

Revenue Recognition - Remaining Performance Obligation (Details)

v3.19.2
Revenue Recognition - Remaining Performance Obligation (Details)
$ in Millions
Jun. 30, 2019
USD ($)
Revenue from Contract with Customer [Abstract]  
Revenue, remaining performance obligation, amount $ 355
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2019-07-01  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Revenue, remaining performance obligation, percentage 55.00%
Revenue, remaining performance obligation, expected timing of satisfaction, period 12 months