Balance Sheet Components - Net Book Value of Intangible Assets by Geographic Regions (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Finite-lived Intangible Assets [Roll Forward]
Intangible assets, net beginning balance	$ 147,527	$ 184,182	$ 201,562
Asset held for sale adjustments	(784)
Write-off of intangible asset	(357)
Adjustments			(2,070)
Amortization of intangibles	(27,446)	(27,756)	(27,027)
Impact of foreign currency exchange	(6,838)	(8,899)	607
Intangible assets, net ending balance	224,565	147,527	184,182
Frankfurt Kleyer 90 Carrier Hotel Acquisition [Member]
Finite-lived Intangible Assets [Roll Forward]
Intangible assets acquired during period			10,010
New York IBX Center Purchase [Member]
Finite-lived Intangible Assets [Roll Forward]
Intangible assets acquired during period			1,100
Nimbo Technologies Inc. [Member]
Finite-lived Intangible Assets [Roll Forward]
Intangible assets acquired during period	1,089
Bit-isle [Member]
Finite-lived Intangible Assets [Roll Forward]
Intangible assets acquired during period	111,374
Reportable Geographical Components [Member] | Americas [Member]
Finite-lived Intangible Assets [Roll Forward]
Intangible assets, net beginning balance	62,954	76,224	89,467
Asset held for sale adjustments	0
Write-off of intangible asset	0
Adjustments			0
Amortization of intangibles	(11,432)	(12,257)	(12,604)
Impact of foreign currency exchange	(1,968)	(1,013)	(1,739)
Intangible assets, net ending balance	50,643	62,954	76,224
Reportable Geographical Components [Member] | Americas [Member] | Frankfurt Kleyer 90 Carrier Hotel Acquisition [Member]
Finite-lived Intangible Assets [Roll Forward]
Intangible assets acquired during period			0
Reportable Geographical Components [Member] | Americas [Member] | New York IBX Center Purchase [Member]
Finite-lived Intangible Assets [Roll Forward]
Intangible assets acquired during period			1,100
Reportable Geographical Components [Member] | Americas [Member] | Nimbo Technologies Inc. [Member]
Finite-lived Intangible Assets [Roll Forward]
Intangible assets acquired during period	1,089
Reportable Geographical Components [Member] | Americas [Member] | Bit-isle [Member]
Finite-lived Intangible Assets [Roll Forward]
Intangible assets acquired during period	0
Reportable Geographical Components [Member] | EMEA [Member]
Finite-lived Intangible Assets [Roll Forward]
Intangible assets, net beginning balance	62,185	82,709	84,186
Asset held for sale adjustments	(784)
Write-off of intangible asset	(357)
Adjustments			(2,070)
Amortization of intangibles	(11,675)	(12,795)	(11,613)
Impact of foreign currency exchange	(5,014)	(7,729)	2,196
Intangible assets, net ending balance	44,355	62,185	82,709
Reportable Geographical Components [Member] | EMEA [Member] | Frankfurt Kleyer 90 Carrier Hotel Acquisition [Member]
Finite-lived Intangible Assets [Roll Forward]
Intangible assets acquired during period			10,010
Reportable Geographical Components [Member] | EMEA [Member] | New York IBX Center Purchase [Member]
Finite-lived Intangible Assets [Roll Forward]
Intangible assets acquired during period			0
Reportable Geographical Components [Member] | EMEA [Member] | Nimbo Technologies Inc. [Member]
Finite-lived Intangible Assets [Roll Forward]
Intangible assets acquired during period	0
Reportable Geographical Components [Member] | EMEA [Member] | Bit-isle [Member]
Finite-lived Intangible Assets [Roll Forward]
Intangible assets acquired during period	0
Reportable Geographical Components [Member] | Asia-Pacific [Member]
Finite-lived Intangible Assets [Roll Forward]
Intangible assets, net beginning balance	22,388	25,249	27,909
Asset held for sale adjustments	0
Write-off of intangible asset	0
Adjustments			0
Amortization of intangibles	(4,339)	(2,704)	(2,810)
Impact of foreign currency exchange	144	(157)	150
Intangible assets, net ending balance	129,567	$ 22,388	25,249
Reportable Geographical Components [Member] | Asia-Pacific [Member] | Frankfurt Kleyer 90 Carrier Hotel Acquisition [Member]
Finite-lived Intangible Assets [Roll Forward]
Intangible assets acquired during period			0
Reportable Geographical Components [Member] | Asia-Pacific [Member] | New York IBX Center Purchase [Member]
Finite-lived Intangible Assets [Roll Forward]
Intangible assets acquired during period			$ 0
Reportable Geographical Components [Member] | Asia-Pacific [Member] | Nimbo Technologies Inc. [Member]
Finite-lived Intangible Assets [Roll Forward]
Intangible assets acquired during period	0
Reportable Geographical Components [Member] | Asia-Pacific [Member] | Bit-isle [Member]
Finite-lived Intangible Assets [Roll Forward]
Intangible assets acquired during period	$ 111,374