XML 57 R41.htm IDEA: XBRL DOCUMENT v3.20.2
Revenue Recognition (Performance obligations) (Details)
$ in Millions
Jun. 30, 2020
USD ($)
Revenue from Contract with Customer [Abstract]  
Revenue, remaining performance obligation, amount $ 548
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2020-07-01  
Revenue from Contract with Customer [Abstract]  
Revenue, remaining performance obligation, amount $ 273
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Revenue, remaining performance obligation, period 6 months
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2021-07-01  
Revenue from Contract with Customer [Abstract]  
Revenue, remaining performance obligation, amount $ 275
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Revenue, remaining performance obligation, period 1 year