Income Taxes (Details)	9 Months Ended
Sep. 30, 2012
Income Taxes [Abstract]
Percentage of taxable income distributed to the partnership	100.00%

Percentage Of Taxable Income Distributed To The Partnership

No definition available.

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