Revenues - Remaining Performance Obligations (Details) $ in Billions	Oct. 03, 2020 USD ($)
Remaining Performance Obligation, Expected Timing of Satisfaction
Remaining performance obligation	$ 9.4
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2020-10-04
Remaining Performance Obligation, Expected Timing of Satisfaction
Remaining performance obligation, percent	65.00%
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period	15 months
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2022-01-02
Remaining Performance Obligation, Expected Timing of Satisfaction
Remaining performance obligation, percent	27.00%
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period	24 months