Assets Held for Sale (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015	Dec. 31, 2015
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Revenues	$ 20,581
Gains on asset sales	5,242	$ 0
Disposal Group, Including Discontinued Operation, Unclassified Balance Sheet Disclosures [Abstract]
Total assets held for sale	955,904		$ 33,257
Total liabilities held for sale	(124,571)		(3,535)
Held-for-sale [Member] | London 2 data center in London, UK (LD2) [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Revenues	3,166	$ 4,682
Disposal Group, Including Discontinued Operation, Unclassified Balance Sheet Disclosures [Abstract]
Accounts receivable	9,011		2,222
Other current assets	3,178		408
Property, plant and equipment	216,364		23,533
Goodwill	518,766		5,000
Intangible assets	206,644		784
Other assets	1,941		1,310
Total assets held for sale	955,904		33,257
Accounts payable, accrued expenses and estimated costs to sell	(56,367)		(654)
Accrued property, plant and equipment	0		(816)
Current portion of capital lease and other financing obligation	(93)		0
Other current liabilities	(4,048)		(435)
Capital lease and other financing obligations, less current portion	(56,896)		0
Other liabilities	(7,167)		(1,630)
Total liabilities held for sale	$ (124,571)		$ (3,535)