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Revenues - Revenue Remaining Performance Obligation (Details)
$ in Millions
Dec. 28, 2018
USD ($)
Revenue from Contract with Customer [Abstract]  
Revenue, remaining performance obligation, amount $ 220
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2018-12-29  
Revenue from Contract with Customer [Abstract]  
Revenue, remaining performance obligation, amount $ 40
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Revenue, remaining performance obligation period 9 months
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2019-06-29  
Revenue from Contract with Customer [Abstract]  
Revenue, remaining performance obligation, amount $ 60
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Revenue, remaining performance obligation period 1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2020-06-29  
Revenue from Contract with Customer [Abstract]  
Revenue, remaining performance obligation, amount $ 46
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Revenue, remaining performance obligation period 1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2021-06-29  
Revenue from Contract with Customer [Abstract]  
Revenue, remaining performance obligation, amount $ 74
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Revenue, remaining performance obligation period