Cover Page - USD ($) $ in Billions	12 Months Ended
	Dec. 31, 2021	Feb. 17, 2022	Jun. 30, 2021
Document Information [Line Items]
Document Type	10-K
Document Annual Report	true
Document Period End Date	Dec. 31, 2021
Document Transition Report	false
Entity File Number	001-40205
Entity Registrant Name	EQUINIX, INC.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	77-0487526
Entity Address, Address Line One	One Lagoon Drive
Entity Address, City or Town	Redwood City
Entity Address, State or Province	CA
Entity Address, Postal Zip Code	94065
City Area Code	650
Local Phone Number	598-6000
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
ICFR Auditor Attestation Flag	true
Entity Shell Company	false
Entity Public Float			$ 72.0
Entity Common Stock, Shares Outstanding		90,721,039
Documents Incorporated by Reference	Part III – Portions of the registrant's definitive proxy statement to be issued in conjunction with the registrant's 2022 Annual Meeting of Stockholders, which is expected to be filed not later than 120 days after the registrant's fiscal year ended December 31, 2021. Except as expressly incorporated by reference, the registrant's proxy statement shall not be deemed to be a part of this report on Form 10-K
Amendment Flag	false
Document Fiscal Year Focus	2021
Document Fiscal Period Focus	FY
Entity Central Index Key	0001101239
Current Fiscal Year End Date	--12-31
Common Stock, $0.001
Document Information [Line Items]
Title of 12(b) Security	Common Stock, $0.001
Trading Symbol	EQIX
Security Exchange Name	NASDAQ
0.250% Senior Notes due 2027
Document Information [Line Items]
Title of 12(b) Security	0.250% Senior Notes due 2027
Security Exchange Name	NASDAQ
No Trading Symbol Flag	true
1.000% Senior Notes due 2033
Document Information [Line Items]
Title of 12(b) Security	1.000% Senior Notes due 2033
Security Exchange Name	NASDAQ
No Trading Symbol Flag	true