Revenue from Contracts with Customers (Revenue Performance Obligation Narrative) (Details) - Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2019-12-29	Dec. 28, 2019
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Expected Timing Of Satisfaction, Percentage	90.00%
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period	24 months