Document and Entity Information	6 Months Ended
	Jun. 30, 2014	Aug. 13, 2014 Common Class A [Member]	Aug. 13, 2014 Common Class B [Member]
Document Information [Line Items]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Jun. 30, 2014
Document Fiscal Year Focus	2014
Document Fiscal Period Focus	Q2
Entity Registrant Name	QTS Realty Trust, Inc.
Entity Central Index Key	0001577368
Current Fiscal Year End Date	--12-31
Entity Filer Category	Non-accelerated Filer
Entity Common Stock, Shares Outstanding		28,883,774	133,000