Segment Information - Revenue Information on Services Basis (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Revenue from External Customer [Line Items]
Revenues	$ 1,675,176	$ 1,519,767	$ 4,929,159	$ 4,434,430
Recurring Revenues
Revenue from External Customer [Line Items]
Revenues	1,563,616	1,432,072	4,617,011	4,191,904
Colocation
Revenue from External Customer [Line Items]
Revenues	1,164,198	1,078,565	3,450,425	3,170,387
Interconnection
Revenue from External Customer [Line Items]
Revenues	291,109	260,942	858,602	752,514
Managed infrastructure services
Revenue from External Customer [Line Items]
Revenues	96,330	82,258	283,679	239,799
Service, Other
Revenue from External Customer [Line Items]
Revenues	11,979	10,307	24,305	29,204
Non-Recurring Revenues
Revenue from External Customer [Line Items]
Revenues	111,560	87,695	312,148	242,526
Americas
Revenue from External Customer [Line Items]
Revenues	763,053	672,332	2,239,636	1,995,656
Americas | Recurring Revenues
Revenue from External Customer [Line Items]
Revenues	721,292	639,572	2,120,623	1,907,059
Americas | Colocation
Revenue from External Customer [Line Items]
Revenues	504,711	450,030	1,489,829	1,348,482
Americas | Interconnection
Revenue from External Customer [Line Items]
Revenues	168,511	156,677	501,016	460,993
Americas | Managed infrastructure services
Revenue from External Customer [Line Items]
Revenues	43,313	28,954	122,532	83,372
Americas | Service, Other
Revenue from External Customer [Line Items]
Revenues	4,757	3,911	7,246	14,212
Americas | Non-Recurring Revenues
Revenue from External Customer [Line Items]
Revenues	41,761	32,760	119,013	88,597
EMEA
Revenue from External Customer [Line Items]
Revenues	545,227	518,083	1,601,873	1,485,082
EMEA | Recurring Revenues
Revenue from External Customer [Line Items]
Revenues	503,288	483,744	1,489,189	1,394,408
EMEA | Colocation
Revenue from External Customer [Line Items]
Revenues	400,395	391,773	1,187,373	1,135,247
EMEA | Interconnection
Revenue from External Customer [Line Items]
Revenues	65,809	55,700	192,717	155,145
EMEA | Managed infrastructure services
Revenue from External Customer [Line Items]
Revenues	31,445	30,690	94,732	89,839
EMEA | Service, Other
Revenue from External Customer [Line Items]
Revenues	5,639	5,581	14,367	14,177
EMEA | Non-Recurring Revenues
Revenue from External Customer [Line Items]
Revenues	41,939	34,339	112,684	90,674
Asia-Pacific
Revenue from External Customer [Line Items]
Revenues	366,896	329,352	1,087,650	953,692
Asia-Pacific | Recurring Revenues
Revenue from External Customer [Line Items]
Revenues	339,036	308,756	1,007,199	890,437
Asia-Pacific | Colocation
Revenue from External Customer [Line Items]
Revenues	259,092	236,762	773,223	686,658
Asia-Pacific | Interconnection
Revenue from External Customer [Line Items]
Revenues	56,789	48,565	164,869	136,376
Asia-Pacific | Managed infrastructure services
Revenue from External Customer [Line Items]
Revenues	21,572	22,614	66,415	66,588
Asia-Pacific | Service, Other
Revenue from External Customer [Line Items]
Revenues	1,583	815	2,692	815
Asia-Pacific | Non-Recurring Revenues
Revenue from External Customer [Line Items]
Revenues	$ 27,860	$ 20,596	$ 80,451	$ 63,255