Tenant Concentration (Details)	3 Months Ended
Mar. 31, 2012	Mar. 31, 2011
Tenant Concentration [Abstract]
Maximum revenues from single tenant, percentage	10.00%	10.00%
Percentage of revenues recognized from subsidiaries of CenturyLink, Inc.	9.20%	10.60%

Operating Revenues Tenant Concentration Percentage Of Total Revenue.

No definition available.

Name:	dlr_OperatingRevenuesTenantConcentrationPercentageOfTotalRevenue
Namespace Prefix:	dlr_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration