Business Combination - Narrative (Details) - USD ($) shares in Millions, $ in Millions			3 Months Ended	6 Months Ended
	Sep. 13, 2020	Apr. 27, 2020	Mar. 31, 2022	Aug. 01, 2021	Jul. 26, 2020	Jul. 28, 2019	Jan. 31, 2021
Business Acquisition [Line Items]
Advanced consideration for acquisition				$ 1,357			$ 1,357
Payments to acquire businesses, net of cash acquired				$ 0	$ 7,171
Arm Limited
Business Acquisition [Line Items]
Total cash consideration	$ 2,000
Restricted stock units issuable	1,500
Advanced consideration for acquisition	1,360
Prepaid royalties	470
Potential refund receivable	1,250
Arm Limited | Forecast
Business Acquisition [Line Items]
Merger agreement price			$ 40,000
Total cash consideration			$ 10,000
Business combination, shares issued (in shares)			177.5
Business combination, shares issuable, value			$ 21,500
Arm Limited | Maximum
Business Acquisition [Line Items]
Earnout payable	$ 5,000
Earnout shares payable (in shares)	41.3
Arm Limited | Intellectual Property License
Business Acquisition [Line Items]
Intellectual property license	$ 170
Intangible assets, useful life	20 years
Arm Limited | Prepaid Royalties
Business Acquisition [Line Items]
Intangible assets, useful life	20 years
Mellanox Technologies, Ltd
Business Acquisition [Line Items]
Payments to acquire businesses, net of cash acquired		$ 7,130
Fair value adjustment, inventory						$ 161