Segment Reporting - Components of Other Operating Income (Loss) (Details) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 26, 2020	Sep. 26, 2020	Jun. 27, 2020	Mar. 28, 2020	Dec. 28, 2019	Sep. 28, 2019	Jun. 29, 2019	Mar. 30, 2019	Dec. 26, 2020	Dec. 28, 2019	Dec. 29, 2018
Segment Reporting Information
Stock-based compensation expense									$ (274)	$ (197)	$ (137)
Impairment of technology licenses									0	0	(45)
Operating income	$ 570	$ 449	$ 173	$ 177	$ 348	$ 186	$ 59	$ 38	1,369	631	451
Segment Reconciling Items
Segment Reporting Information
Stock-based compensation expense									(274)	(197)	(137)
Acquisition-related costs									(14)	0	0
Impairment of technology licenses									0	0	(45)
Loss contingency on legal matter									0	(12)	0
Operating income									$ (288)	$ (209)	$ (182)