Segment Information - Revenue Information on Services Basis (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Revenue from External Customer [Line Items]
Revenues	$ 1,657,919	$ 1,470,121	$ 3,253,983	$ 2,914,663
Recurring Revenues
Revenue from External Customer [Line Items]
Revenues	1,542,462	1,398,138	3,053,395	2,759,832
Colocation
Revenue from External Customer [Line Items]
Revenues	1,155,935	1,057,445	2,286,227	2,091,822
Interconnection
Revenue from External Customer [Line Items]
Revenues	287,774	249,431	567,493	491,572
Managed infrastructure services
Revenue from External Customer [Line Items]
Revenues	94,004	80,051	187,349	157,541
Service, Other
Revenue from External Customer [Line Items]
Revenues	4,749	11,211	12,326	18,897
Non-Recurring Revenues
Revenue from External Customer [Line Items]
Revenues	115,457	71,983	200,588	154,831
Americas
Revenue from External Customer [Line Items]
Revenues	750,643	661,419	1,476,583	1,323,324
Americas | Recurring Revenues
Revenue from External Customer [Line Items]
Revenues	706,462	634,855	1,399,331	1,267,487
Americas | Colocation
Revenue from External Customer [Line Items]
Revenues	497,659	447,498	985,118	898,452
Americas | Interconnection
Revenue from External Customer [Line Items]
Revenues	167,618	153,387	332,505	304,316
Americas | Managed infrastructure services
Revenue from External Customer [Line Items]
Revenues	40,734	28,889	79,219	54,418
Americas | Service, Other
Revenue from External Customer [Line Items]
Revenues	451	5,081	2,489	10,301
Americas | Non-Recurring Revenues
Revenue from External Customer [Line Items]
Revenues	44,181	26,564	77,252	55,837
EMEA
Revenue from External Customer [Line Items]
Revenues	537,929	488,090	1,056,646	966,999
EMEA | Recurring Revenues
Revenue from External Customer [Line Items]
Revenues	498,819	467,190	985,901	910,664
EMEA | Colocation
Revenue from External Customer [Line Items]
Revenues	398,703	381,144	786,978	743,474
EMEA | Interconnection
Revenue from External Customer [Line Items]
Revenues	65,258	50,904	126,908	99,445
EMEA | Managed infrastructure services
Revenue from External Customer [Line Items]
Revenues	31,176	29,012	63,287	59,149
EMEA | Service, Other
Revenue from External Customer [Line Items]
Revenues	3,682	6,130	8,728	8,596
EMEA | Non-Recurring Revenues
Revenue from External Customer [Line Items]
Revenues	39,110	20,900	70,745	56,335
Asia-Pacific
Revenue from External Customer [Line Items]
Revenues	369,347	320,612	720,754	624,340
Asia-Pacific | Recurring Revenues
Revenue from External Customer [Line Items]
Revenues	337,181	296,093	668,163	581,681
Asia-Pacific | Colocation
Revenue from External Customer [Line Items]
Revenues	259,573	228,803	514,131	449,896
Asia-Pacific | Interconnection
Revenue from External Customer [Line Items]
Revenues	54,898	45,140	108,080	87,811
Asia-Pacific | Managed infrastructure services
Revenue from External Customer [Line Items]
Revenues	22,094	22,150	44,843	43,974
Asia-Pacific | Service, Other
Revenue from External Customer [Line Items]
Revenues	616	0	1,109	0
Asia-Pacific | Non-Recurring Revenues
Revenue from External Customer [Line Items]
Revenues	$ 32,166	$ 24,519	$ 52,591	$ 42,659