Revenue Recognition (Performance Obligation) (Details) $ in Millions	12 Months Ended
	Sep. 24, 2021 USD ($) country
Revenue from Contract with Customer [Abstract]
Remaining performance obligation | $	$ 41.0
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Countries technologies are licensed in | country	60
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2021-09-25
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Expected timing of satisfaction period	1 year
Remaining performance obligation, percent	43.00%
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2022-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Expected timing of satisfaction period	1 year
Remaining performance obligation, percent	18.00%
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2023-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Expected timing of satisfaction period	1 year
Remaining performance obligation, percent	39.00%