Common Stock and Employee Equity Plans - Schedule of Stock-based Compensation Expense (Details) - USD ($) shares in Millions, $ in Millions	3 Months Ended	9 Months Ended
Sep. 25, 2021	Sep. 26, 2020	Sep. 25, 2021	Sep. 26, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense		$ 76		$ 195
Stock Repurchased During Period, Shares	7.2		10.4
Income tax benefit	$ 16	0	$ 43	0
Total stock-based compensation expense after income taxes	83	76	224	195
Cost of sales
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense	2	1	4	5
Research and development
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense	63	48	171	122
Marketing, general and administrative
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense	$ 34	$ 27	$ 92	$ 68

Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

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