Earnings Per Share - Computation of Basic and Diluted Earnings Per Share (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Earnings Per Share [Abstract]
Net income	$ 147,693	$ 156,074
Net (income) loss attributable to non-controlling interests	(240)	288
Net income attributable to Equinix	$ 147,453	$ 156,362
Weighted-average shares used to calculate basic EPS (in shares)	90,771	89,330
Effect of dilutive securities:
Employee equity awards (in shares)	391	512
Weighted-average shares used to calculate diluted EPS (in shares)	91,162	89,842
Basic EPS (in dollars per share)	$ 1.62	$ 1.75
Diluted EPS (in dollars per share)	$ 1.62	$ 1.74