Deferred Revenue (Remaining Performance Obligations Narratives) (Details) $ in Billions	Jan. 03, 2020 USD ($)
Revenue Recognition, Multiple-deliverable Arrangements [Line Items]
Revenue, Remaining Performance Obligation, Amount	$ 1.2
Revenue Recognition Over Remaining Obligations Over Next 12 Months [Member]
Revenue Recognition, Multiple-deliverable Arrangements [Line Items]
Revenue, Remaining Performance Obligation, Percentage	71.00%
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period	12 months
Revenue Recognition Over Remaining Obligations Over Next 24 Months [Member]
Revenue Recognition, Multiple-deliverable Arrangements [Line Items]
Revenue, Remaining Performance Obligation, Percentage	17.00%
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period	24 months