Summary of Significant Accounting Policies (Tables)

3 Months Ended

Mar. 31, 2019

Accounting Policies [Abstract]

Capitalized Contract Cost

We have reclassified certain items in the December 31, 2018 condensed consolidated balance sheet to conform to the current presentation as follows (in thousands):

	December 31, 2018
	As Previously Reported		Adjustments			As Revised
Land	$	1,509,764	$	(650,651	)	$	859,113
Building and improvements	16,745,210		(1,134,218		)	15,610,992
Construction in progress and space held    for development	—		1,621,928			1,621,928
Land held for future development	—		162,941			162,941

Schedule of Goodwill

The following is a summary of goodwill activity for the three months ended March 31, 2019 (in thousands):

	Balance as of December 31, 2018		Deconsolidation			Goodwill Adjustments (1)			Impact of Change in Foreign Exchange Rates		Balance as of March 31, 2019
Merger / Portfolio Acquisition
Telx Acquisition	$	330,845	$	—		$	—		$	—	$	330,845
European Portfolio Acquisition	442,349		—			(9,436		)	2,559		435,472
DFT Merger	2,592,146		—			—			—		2,592,146
Ascenty Acquisition	982,667		(982,667		)	—			—		—
Total	$	4,348,007	$	(982,667	)	$	(9,436	)	$	2,559	$	3,358,463

(1) As a result of a subsequent change to an acquired deferred tax liability that would not have impacted consideration paid, goodwill was adjusted.