Revenue - Remaining Performance Obligations to be Recognized as Revenue (Details) $ in Billions	Sep. 27, 2020 USD ($)
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2020-09-28
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenue, remaining performance obligations	$ 81.5
Revenue, remaining performance obligation, percentage recognized	45.00%
Revenue, remaining performance obligation, expected timing of satisfaction, period	1 year 3 months
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2022-01-01
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenue, remaining performance obligation, percentage recognized	30.00%
Revenue, remaining performance obligation, expected timing of satisfaction, period	2 years