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Revenues - Remaining Performance Obligation (Details) - USD ($)
$ in Millions
Sep. 26, 2020
Dec. 31, 2019
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2020-01-01    
Revenue from Contract with Customer [Abstract]    
Remaining performance obligation   $ 724
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]    
Remaining performance obligation, expected recognition period   2 years
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2020-09-27    
Revenue from Contract with Customer [Abstract]    
Remaining performance obligation $ 874  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]    
Remaining performance obligation, expected recognition period 2 years