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Cover Page - USD ($) $ in Billions	12 Months Ended
Cover Page - USD ($) $ in Billions	Jan. 31, 2020	Mar. 20, 2020	Aug. 02, 2019
Entity Information [Line Items]
Document Type	10-K
Document Annual Report	true
Document Period End Date	Jan. 31, 2020
Document Transition Report	false
Entity File Number	001-37867
Entity Registrant Name	Dell Technologies Inc.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	80-0890963
Entity Address, Address Line One	One Dell Way
Entity Address, City or Town	Round Rock
Entity Address, State or Province	TX
Entity Address, Postal Zip Code	78682
City Area Code	800
Local Phone Number	289-3355
Title of 12(b) Security	Class C Common Stock, par value of $0.01 per share
Trading Symbol	DELL
Security Exchange Name	NYSE
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Public Float			$ 12.0
Documents Incorporated by Reference	DOCUMENTS INCORPORATED BY REFERENCE The information required by Part III of this report, to the extent not set forth herein, is incorporated by reference from the registrant’s proxy statement relating to its annual meeting of stockholders to be held in 2020. The proxy statement will be filed with the Securities and Exchange Commission within 120 days after the end of the fiscal year to which this report relates.
Entity Central Index Key	0001571996
Current Fiscal Year End Date	--01-31
Document Fiscal Year Focus	2020
Document Fiscal Period Focus	FY
Amendment Flag	false
Entity Common Stock, Shares Outstanding - Class C
Entity Information [Line Items]
Entity Common Stock, Shares Outstanding		253,249,641
Entity Common Stock, Shares Outstanding - Class A
Entity Information [Line Items]
Entity Common Stock, Shares Outstanding		384,538,823
Entity Common Stock, Shares Outstanding - Class B
Entity Information [Line Items]
Entity Common Stock, Shares Outstanding		101,685,217