Organization and Description of Business Organization and Description of Business (Tables)

12 Months Ended

Dec. 31, 2017

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Schedule of Real Estate Properties

A summary of our data center portfolio as of December 31, 2017 and 2016 is as follows:

	Data Centers
	As of December 31, 2017						As of December 31, 2016
Region	Operating			Held for Sale	Unconsolidated Joint Ventures	Total	Operating	Held for Sale	Unconsolidated Joint Ventures	Total
United States	131	(1	)	7	14	152	123	3	14	140
Europe	38			—	—	38	37	—	—	37
Asia	3			—	4	7	3	—	1	4
Australia	5			—	—	5	4	—	—	4
Canada	3	(1	)	—	—	3	2	—	—	2
Total	180			7	18	205	169	3	15	187

(1) Includes 15 data centers acquired as part of the merger with DuPont Fabros Technology, Inc., of which 14 are located in the United States and one is located in Canada.

A summary of our investments in properties as of December 31, 2017 and 2016 is as follows:

	As of December 31, 2017
	(in thousands)
Property Type	Land		Acquired Ground Lease		Buildings and Improvements (1)		Tenant Improvements		Accumulated Depreciation and Amortization			Net Investment in Properties
Internet Gateway Data Centers	$	109,844	$	—	$	1,940,495	$	99,174	$	(778,659	)	$	1,370,854
Data Centers	1,010,306		11,150		13,147,042		453,712		(2,430,984		)	12,191,226
Technology Manufacturing	11,959		—		1,564		76		(31		)	13,568
Technology Office	2,067		—		23,029		—		(16,779		)	8,317
Other	2,165		—		103,275		78		(11,774		)	93,744
	$	1,136,341	$	11,150	$	15,215,405	$	553,040	$	(3,238,227	)	$	13,677,709

	As of December 31, 2016
	(in thousands)
Property Type	Land		Acquired Ground Lease		Buildings and Improvements (1)		Tenant Improvements		Accumulated Depreciation and Amortization			Net Investment in Properties
Internet Gateway Data Centers	$	109,083	$	—	$	1,834,052	$	93,472	$	(674,823	)	$	1,361,784
Data Centers	610,007		10,014		8,254,108		431,444		(1,932,127		)	7,373,446
Technology Manufacturing	20,199		1,321		57,765		6,333		(24,595		)	61,023
Technology Office	5,368		—		43,574		1,460		(21,407		)	28,995
Other	2,165		—		78,026		78		(15,557		)	64,712
	$	746,822	$	11,335	$	10,267,525	$	532,787	$	(2,668,509	)	$	8,889,960

(1) Balances include, as of December 31, 2017 and 2016, $1.4 billion and $0.7 billion of direct and accrued costs associated with development in progress, respectively.