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Income Taxes - Changes in Valuation Allowance for Deferred Tax Assets (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Deferred Tax Assets, Valuation Allowance [Roll Forward]
Beginning balance	$ 82,344	$ 57,812	$ 57,003
Amounts from acquisitions	964	5,777	(2,707)
Divested balances	0	0	(351)
Amounts recognized into income	595	(390)	2,870
Current increase	19,539	15,044	697
Impact of foreign currency exchange	(2,696)	4,101	300
Ending balance	$ 100,746	$ 82,344	$ 57,812

X

- Definition

Deferred Tax Assets, Valuation Allowance, Amounts From Acquisitions

+ References

No definition available.

+ Details

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X

- Definition

Deferred Tax Assets, Valuation Allowance, Amounts From Divestitures

+ References

No definition available.

+ Details

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X

- Definition

Deferred Tax Assets Valuation Allowance Foreign Currency Translation Adjustments

+ References

No definition available.

+ Details

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Balance Type:	debit
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X

- Definition

Deferred Tax Assets, Valuation Allowance [Roll Forward]

+ References

No definition available.

+ Details

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X

- Definition

Release of valuation allowance against income.

+ References

No definition available.

+ Details

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Namespace Prefix:	eqix_
Data Type:	xbrli:monetaryItemType
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X

- Definition

Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=121826272&loc=d3e32537-109319

+ Details

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Namespace Prefix:	us-gaap_
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Balance Type:	credit
Period Type:	instant

X

- Definition

Amount of increase (decrease) in the valuation allowance for a specified deferred tax asset.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=121826272&loc=d3e32537-109319

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