Summary of Significant Accounting Policies - Goodwill (Details) - USD ($) $ in Thousands		12 Months Ended
Mar. 09, 2020	Dec. 31, 2020	Dec. 31, 2019
Goodwill [Roll Forward]
Goodwill - Beginning Balance		$ 3,363,070	$ 4,348,007
Merger/Acquisition		4,554,660
Deconsolidation		0	(967,189)
Goodwill Adjustments			(9,436)
Impact of Change in Foreign Exchange Rates		413,266	(8,312)
Goodwill - Ending Balance		8,330,996	3,363,070
Telx Acquisition
Goodwill [Roll Forward]
Goodwill - Beginning Balance		330,845	330,845
Deconsolidation		0	0
Impact of Change in Foreign Exchange Rates		0	0
Goodwill - Ending Balance		330,845	330,845
European Portfolio Acquisition
Goodwill [Roll Forward]
Goodwill - Beginning Balance		440,079	442,349
Deconsolidation		0	0
Goodwill Adjustments			(9,436)
Impact of Change in Foreign Exchange Rates		23,075	7,166
Goodwill - Ending Balance		463,154	440,079
DFT Merger
Goodwill [Roll Forward]
Goodwill - Beginning Balance		2,592,146	2,592,146
Deconsolidation		0	0
Impact of Change in Foreign Exchange Rates		0	0
Goodwill - Ending Balance		2,592,146	2,592,146
Ascenty Acquisition
Goodwill [Roll Forward]
Goodwill - Beginning Balance			982,667
Deconsolidation			(967,189)
Impact of Change in Foreign Exchange Rates			(15,478)
InterXion
Goodwill [Roll Forward]
Goodwill - Beginning Balance		0
Merger/Acquisition	$ 4,300,000	4,338,711
Deconsolidation		0
Impact of Change in Foreign Exchange Rates		380,156
Goodwill - Ending Balance	$ 4,338,711	4,718,867	0
Other Combinations
Goodwill [Roll Forward]
Goodwill - Beginning Balance		0
Merger/Acquisition		215,949
Impact of Change in Foreign Exchange Rates		10,035
Goodwill - Ending Balance		$ 225,984	$ 0

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
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Amount of divestiture of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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