Document and Entity Information - shares	3 Months Ended
	Mar. 31, 2019	May 06, 2019
Entity Information [Line Items]
Document Type	10-Q
Document Period End Date	Mar. 31, 2019
Document Fiscal Year Focus	2019
Document Fiscal Period Focus	Q1
Amendment Flag	false
Entity Registrant Name	Digital Realty Trust, Inc.
Entity Central Index Key	0001297996
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth	false
Entity Common Stock, Shares Outstanding		208,282,930
Digital Realty Trust, L.P.
Entity Information [Line Items]
Document Type	10-Q
Document Period End Date	Mar. 31, 2019
Document Fiscal Year Focus	2019
Document Fiscal Period Focus	Q1
Amendment Flag	false
Entity Registrant Name	Digital Realty Trust, L.P.
Entity Central Index Key	0001494877
Entity Filer Category	Non-accelerated Filer
Entity Small Business	false
Entity Emerging Growth	false