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Document and Entity Information - USD ($) $ in Millions	12 Months Ended
Document and Entity Information - USD ($) $ in Millions	Dec. 31, 2020	Feb. 04, 2021	Jun. 30, 2020
Document Information [Line Items]
Document Type	10-K
Document Quarterly Report	true
Document Period End Date	Dec. 31, 2020
Current Fiscal Year End Date	--12-31
Document Transition Report	false
Entity File Number	001-38231
Entity Registrant Name	Switch, Inc.
Entity Incorporation, State or Country Code	NV
Entity Tax Identification Number	82-1883953
Entity Address, Address Line One	7135 S. Decatur Boulevard
Entity Address, City or Town	Las Vegas,
Entity Address, State or Province	NV
Entity Address, Postal Zip Code	89118
City Area Code	(702)
Local Phone Number	444-4111
Title of 12(b) Security	Class A common stock, par value $0.001
Trading Symbol	SWCH
Security Exchange Name	NYSE
Entity Well-known Seasoned Issuer	No
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
ICFR Auditor Attestation Flag	true
Entity Shell Company	false
Entity Public Float			$ 1,640
Documents Incorporated by Reference	Documents Incorporated by Reference Portions of the registrant’s definitive Proxy Statement for the 2021 annual meeting of the stockholders to be filed with the Securities and Exchange Commission within 120 days after the end of the fiscal year ended December 31, 2020 are incorporated by reference into Part III of this Annual Report on Form 10-K.
Entity Central Index Key	0001710583
Document Fiscal Year Focus	2020
Document Fiscal Period Focus	FY
Amendment Flag	false
Class A Common Stock
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		127,339,012
Class B Common Stock
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		113,915,174
Class C Common Stock
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		0