Segment Information - Revenue Information on Services Basis (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Revenue from External Customer [Line Items]
Revenues	$ 1,470,121	$ 1,384,977	$ 2,914,663	$ 2,748,195
Recurring Revenues
Revenue from External Customer [Line Items]
Revenues	1,398,138	1,306,045	2,759,832	2,580,873
Colocation
Revenue from External Customer [Line Items]
Revenues	1,057,445	1,005,615	2,091,822	1,986,386
Interconnection
Revenue from External Customer [Line Items]
Revenues	249,431	219,031	491,572	431,815
Managed infrastructure services
Revenue from External Customer [Line Items]
Revenues	80,051	73,772	157,541	146,567
Service, Other
Revenue from External Customer [Line Items]
Revenues	11,211	7,627	18,897	16,105
Non-Recurring Revenues
Revenue from External Customer [Line Items]
Revenues	71,983	78,932	154,831	167,322
Americas
Revenue from External Customer [Line Items]
Revenues	661,419	644,420	1,323,324	1,288,786
Americas | Recurring Revenues
Revenue from External Customer [Line Items]
Revenues	634,855	614,806	1,267,487	1,221,116
Americas | Colocation
Revenue from External Customer [Line Items]
Revenues	447,498	444,086	898,452	884,067
Americas | Interconnection
Revenue from External Customer [Line Items]
Revenues	153,387	142,460	304,316	281,023
Americas | Managed infrastructure services
Revenue from External Customer [Line Items]
Revenues	28,889	22,908	54,418	44,695
Americas | Service, Other
Revenue from External Customer [Line Items]
Revenues	5,081	5,352	10,301	11,331
Americas | Non-Recurring Revenues
Revenue from External Customer [Line Items]
Revenues	26,564	29,614	55,837	67,670
EMEA
Revenue from External Customer [Line Items]
Revenues	488,090	449,855	966,999	884,515
EMEA | Recurring Revenues
Revenue from External Customer [Line Items]
Revenues	467,190	417,081	910,664	817,318
EMEA | Colocation
Revenue from External Customer [Line Items]
Revenues	381,144	347,795	743,474	678,920
EMEA | Interconnection
Revenue from External Customer [Line Items]
Revenues	50,904	38,614	99,445	76,139
EMEA | Managed infrastructure services
Revenue from External Customer [Line Items]
Revenues	29,012	28,397	59,149	57,485
EMEA | Service, Other
Revenue from External Customer [Line Items]
Revenues	6,130	2,275	8,596	4,774
EMEA | Non-Recurring Revenues
Revenue from External Customer [Line Items]
Revenues	20,900	32,774	56,335	67,197
Asia-Pacific
Revenue from External Customer [Line Items]
Revenues	320,612	290,702	624,340	574,894
Asia-Pacific | Recurring Revenues
Revenue from External Customer [Line Items]
Revenues	296,093	274,158	581,681	542,439
Asia-Pacific | Colocation
Revenue from External Customer [Line Items]
Revenues	228,803	213,734	449,896	423,399
Asia-Pacific | Interconnection
Revenue from External Customer [Line Items]
Revenues	45,140	37,957	87,811	74,653
Asia-Pacific | Managed infrastructure services
Revenue from External Customer [Line Items]
Revenues	22,150	22,467	43,974	44,387
Asia-Pacific | Service, Other
Revenue from External Customer [Line Items]
Revenues	0	0	0	0
Asia-Pacific | Non-Recurring Revenues
Revenue from External Customer [Line Items]
Revenues	$ 24,519	$ 16,544	$ 42,659	$ 32,455