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Summary of Significant Accounting Policies - Revenue Narrative (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenues	$ 1,066,907	$ 1,060,823	$ 2,120,770	$ 2,103,281
Global Data Center Business
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenues	62,291	54,895	123,827	101,498
Storage rental
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenues	669,288	655,439	1,332,262	1,306,588
Storage rental | Global Data Center Business
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenues	60,582	$ 51,945	120,300	$ 97,440
Operating Segments | Storage Rental, Power And Connectivity | Global Data Center Business
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenues	$ 9,900		$ 19,000

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Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 4
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=118956577&loc=SL49130543-203045

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=118956577&loc=SL49130545-203045

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+ References

No definition available.

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