Organization and Description of Business (Details) $ in Thousands		12 Months Ended
	Dec. 20, 2018 USD ($)	Dec. 31, 2018 USD ($) property	Dec. 31, 2017 USD ($) property	Dec. 31, 2016 USD ($)	Mar. 31, 2019 USD ($)
Real Estate Properties [Line Items]
Number of real estate properties		214	205
Cash consideration | $		$ 1,679,830	$ 0	$ 0
Common Interest
Real Estate Properties [Line Items]
Ownership percentage in the Operating Partnership		95.10%	96.00%
Preferred Interest
Real Estate Properties [Line Items]
Ownership percentage in the Operating Partnership		100.00%
Ascenty
Real Estate Properties [Line Items]
Number of real estate properties		16
Number of real estate properties under construction		8
Cash consideration | $	$ 1,800,000
DuPont Fabros Technology
Real Estate Properties [Line Items]
Number of real estate properties		15
Operating
Real Estate Properties [Line Items]
Number of real estate properties		196	180
Held for Sale
Real Estate Properties [Line Items]
Number of real estate properties		0	7
Unconsolidated Joint Ventures
Real Estate Properties [Line Items]
Number of real estate properties		18	18
Ascenty | Scenario, Forecast | Brookefield Infrastructure
Real Estate Properties [Line Items]
Ownership percentage in the Operating Partnership					49.00%
Business combination, equity investment | $					$ 700,000
United States
Real Estate Properties [Line Items]
Number of real estate properties		145	152
United States | DuPont Fabros Technology
Real Estate Properties [Line Items]
Number of real estate properties		14
United States | Operating
Real Estate Properties [Line Items]
Number of real estate properties		131	131
United States | Held for Sale
Real Estate Properties [Line Items]
Number of real estate properties		0	7
United States | Unconsolidated Joint Ventures
Real Estate Properties [Line Items]
Number of real estate properties		14	14
Europe
Real Estate Properties [Line Items]
Number of real estate properties		38	38
Europe | Operating
Real Estate Properties [Line Items]
Number of real estate properties		38	38
Europe | Held for Sale
Real Estate Properties [Line Items]
Number of real estate properties		0	0
Europe | Unconsolidated Joint Ventures
Real Estate Properties [Line Items]
Number of real estate properties		0	0
Latin America
Real Estate Properties [Line Items]
Number of real estate properties		16	0
Latin America | Operating
Real Estate Properties [Line Items]
Number of real estate properties		16	0
Latin America | Held for Sale
Real Estate Properties [Line Items]
Number of real estate properties		0	0
Latin America | Unconsolidated Joint Ventures
Real Estate Properties [Line Items]
Number of real estate properties			0
Asia
Real Estate Properties [Line Items]
Number of real estate properties		7	7
Asia | Operating
Real Estate Properties [Line Items]
Number of real estate properties		3	3
Asia | Held for Sale
Real Estate Properties [Line Items]
Number of real estate properties		0	0
Asia | Unconsolidated Joint Ventures
Real Estate Properties [Line Items]
Number of real estate properties		4	4
Australia
Real Estate Properties [Line Items]
Number of real estate properties		5	5
Australia | Operating
Real Estate Properties [Line Items]
Number of real estate properties		5	5
Australia | Held for Sale
Real Estate Properties [Line Items]
Number of real estate properties		0	0
Australia | Unconsolidated Joint Ventures
Real Estate Properties [Line Items]
Number of real estate properties		0	0
Canada
Real Estate Properties [Line Items]
Number of real estate properties		3	3
Canada | DuPont Fabros Technology
Real Estate Properties [Line Items]
Number of real estate properties		1
Canada | Operating
Real Estate Properties [Line Items]
Number of real estate properties		3	3
Canada | Held for Sale
Real Estate Properties [Line Items]
Number of real estate properties		0	0
Canada | Unconsolidated Joint Ventures
Real Estate Properties [Line Items]
Number of real estate properties		0	0