Real Estate Assets and Construction in Progress (Details) $ in Thousands	Mar. 31, 2021 USD ($) facility	Dec. 31, 2020 USD ($) facility
Real Estate Properties [Line Items]
Land	$ 164,822	$ 165,109
Buildings, Improvements and Equipment	2,965,488	2,839,261
Construction in progress	1,119,749	1,028,765
Owned Properties
Real Estate Properties [Line Items]
Land	164,822	165,109
Buildings, Improvements and Equipment	2,965,488	2,839,261
Construction in progress	1,119,749	1,028,765
Total cost	4,250,059	4,033,135
Owned Properties | Ashburn, Virginia Campus
Real Estate Properties [Line Items]
Land	16,476	16,476
Buildings, Improvements and Equipment	391,247	371,725
Construction in progress	219,065	185,903
Total cost	626,788	574,104
Owned Properties | Atlanta, Georgia Campus
Real Estate Properties [Line Items]
Land	55,158	55,157
Buildings, Improvements and Equipment	771,045	700,142
Construction in progress	183,319	191,072
Total cost	1,009,522	946,371
Owned Properties | Chicago, Illinois
Real Estate Properties [Line Items]
Land	9,400	9,400
Buildings, Improvements and Equipment	251,676	250,336
Construction in progress	131,322	104,117
Total cost	392,398	363,853
Owned Properties | Dulles, Virginia
Real Estate Properties [Line Items]
Land	3,154	3,154
Buildings, Improvements and Equipment	55,580	54,323
Construction in progress	4,220	4,148
Total cost	62,954	61,625
Owned Properties | Eemshaven, Netherlands
Real Estate Properties [Line Items]
Land	5,153	5,366
Buildings, Improvements and Equipment	20,991	21,712
Construction in progress	47,859	47,531
Total cost	74,003	74,609
Owned Properties | Fort Worth, Texas
Real Estate Properties [Line Items]
Land	9,079	9,079
Buildings, Improvements and Equipment	124,481	124,054
Construction in progress	3,350	1,064
Total cost	136,910	134,197
Owned Properties | Groningen, Netherlands
Real Estate Properties [Line Items]
Land	1,821	1,896
Buildings, Improvements and Equipment	11,324	11,206
Construction in progress	3,249	3,730
Total cost	16,394	16,832
Owned Properties | Hillsboro, Oregon
Real Estate Properties [Line Items]
Land	18,414	18,414
Buildings, Improvements and Equipment	47,364	34,594
Construction in progress	72,033	78,390
Total cost	137,811	131,398
Owned Properties | Irving, Texas
Real Estate Properties [Line Items]
Land	8,606	8,606
Buildings, Improvements and Equipment	409,565	392,275
Construction in progress	89,516	99,591
Total cost	507,687	500,472
Owned Properties | Manassas, Virginia
Real Estate Properties [Line Items]
Land	0	0
Buildings, Improvements and Equipment	37	25
Construction in progress	90,947	67,073
Total cost	90,984	67,098
Owned Properties | Phoenix, Arizona
Real Estate Properties [Line Items]
Land	0	0
Buildings, Improvements and Equipment	0	0
Construction in progress	38,063	37,729
Total cost	38,063	37,729
Owned Properties | Piscataway, New Jersey
Real Estate Properties [Line Items]
Land	7,466	7,466
Buildings, Improvements and Equipment	122,599	122,176
Construction in progress	39,951	30,401
Total cost	170,016	160,043
Owned Properties | Princeton, New Jersey
Real Estate Properties [Line Items]
Land	20,700	20,700
Buildings, Improvements and Equipment	35,267	35,261
Construction in progress	9	5
Total cost	55,976	55,966
Owned Properties | Richmond, Virginia
Real Estate Properties [Line Items]
Land	2,180	2,180
Buildings, Improvements and Equipment	235,381	233,927
Construction in progress	128,911	120,577
Total cost	366,472	356,684
Owned Properties | Sacramento, California
Real Estate Properties [Line Items]
Land	1,481	1,481
Buildings, Improvements and Equipment	66,304	66,300
Construction in progress	125	12
Total cost	67,910	67,793
Owned Properties | Santa Clara, California
Real Estate Properties [Line Items]
Land	0	0
Buildings, Improvements and Equipment	117,522	117,343
Construction in progress	16,871	9,385
Total cost	134,393	126,728
Owned Properties | Suwanee, Georgia (Atlanta-Suwanee)
Real Estate Properties [Line Items]
Land	3,521	3,521
Buildings, Improvements and Equipment	184,975	184,467
Construction in progress	7,607	6,718
Total cost	196,103	194,706
Owned Properties | Other
Real Estate Properties [Line Items]
Land	2,213	2,213
Buildings, Improvements and Equipment	36,950	36,636
Construction in progress	43,272	41,094
Total cost	82,435	79,943
Leased Properties
Real Estate Properties [Line Items]
Land	0	0
Buildings, Improvements and Equipment	83,180	82,759
Construction in progress	60	225
Total cost	$ 83,240	$ 82,984
Number of facilities leased | facility	7	7
Leased Properties | Finance Leases
Real Estate Properties [Line Items]
Number of facilities leased | facility	1	1