Business Segments (Detail) - USD ($) $ in Millions	3 Months Ended
	Mar. 27, 2021	Mar. 28, 2020
Segment Reporting Information [Line Items]
Net revenue	$ 19,673	$ 19,828
Operating Income (Loss)	3,694	7,038
Platform
Segment Reporting Information [Line Items]
Net revenue	15,268	15,934
Adjacent revenue
Segment Reporting Information [Line Items]
Net revenue	4,405	3,894
DCG platform
Segment Reporting Information [Line Items]
Net revenue	4,811	6,427
Internet of Things [Member]
Segment Reporting Information [Line Items]
Net revenue	1,291	1,137
Operating Income (Loss)	359	331
Client Computing Group [Member]
Segment Reporting Information [Line Items]
Net revenue	10,605	9,775
Operating Income (Loss)	4,120	4,225
Client Computing Group [Member] | Platform
Segment Reporting Information [Line Items]
Net revenue	9,617	8,712
Client Computing Group [Member] | Adjacent revenue
Segment Reporting Information [Line Items]
Net revenue	988	1,063
Data Center Group [Member]
Segment Reporting Information [Line Items]
Net revenue	5,564	6,993
Operating Income (Loss)	1,273	3,492
Data Center Group [Member] | Adjacent revenue
Segment Reporting Information [Line Items]
Net revenue	753	566
Internet of Things Group [Member]
Segment Reporting Information [Line Items]
Net revenue	914	883
Operating Income (Loss)	212	243
Mobileye [Member]
Segment Reporting Information [Line Items]
Net revenue	377	254
Operating Income (Loss)	147	88
Non-Volatile Memory Solutions Group [Member]
Segment Reporting Information [Line Items]
Net revenue	1,107	1,338
Operating Income (Loss)	171	(66)
Programmable Solutions Group [Member]
Segment Reporting Information [Line Items]
Net revenue	486	519
Operating Income (Loss)	88	97
All other [Member]
Segment Reporting Information [Line Items]
Net revenue	620	66
Operating Income (Loss)	$ (2,317)	$ (1,041)