Property and Equipment, Net - Components of Property and Equipment, Net (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 2,961,822	$ 2,437,338
Less: accumulated depreciation and amortization	(823,277)	(699,923)
Property and equipment, net	2,138,545	1,737,415
Land and land improvements
Property, Plant and Equipment [Line Items]
Property and equipment, gross	312,343	286,706
Buildings, building improvements, and leasehold improvements
Property, Plant and Equipment [Line Items]
Property and equipment, gross	687,321	532,938
Substation equipment
Property, Plant and Equipment [Line Items]
Property and equipment, gross	19,780	19,780
Data center equipment
Property, Plant and Equipment [Line Items]
Property and equipment, gross	1,511,350	1,230,623
Vehicles
Property, Plant and Equipment [Line Items]
Property and equipment, gross	2,052	1,974
Core network equipment
Property, Plant and Equipment [Line Items]
Property and equipment, gross	40,990	37,327
Fiber facilities
Property, Plant and Equipment [Line Items]
Property and equipment, gross	14,643	14,441
Computer equipment, furniture and fixtures
Property, Plant and Equipment [Line Items]
Property and equipment, gross	52,070	42,243
Finance lease right-of-use assets
Property, Plant and Equipment [Line Items]
Property and equipment, gross	75,933	72,951
Construction in progress
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 245,340	$ 198,355