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Acquired Intangible Assets And Liabilities (Schedule Of Estimated Annual Amortization Of Below Market Leases) (Details) (USD $)
In Thousands, unless otherwise specified
Mar. 31, 2015
Dec. 31, 2014
Finite-Lived Intangible Assets [Line Items]    
Below-market lease, net $ 97,234us-gaap_BelowMarketLeaseNet $ 104,235us-gaap_BelowMarketLeaseNet
Below-Market Leases, Net of Above-Market Leases    
Finite-Lived Intangible Assets [Line Items]    
Below-market leases, Remainder of 2015 6,693us-gaap_BelowMarketLeaseAmortizationIncomeRemainderOfFiscalYear
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= dlr_BelowMarketLeasesNetOfAboveMarketLeasesMember
 
Below-market leases, 2016 7,579us-gaap_BelowMarketLeaseAmortizationIncomeYearTwo
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= dlr_BelowMarketLeasesNetOfAboveMarketLeasesMember
 
Below-market leases, 2017 6,182us-gaap_BelowMarketLeaseAmortizationIncomeYearThree
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= dlr_BelowMarketLeasesNetOfAboveMarketLeasesMember
 
Below-market leases, 2018 4,574us-gaap_BelowMarketLeaseAmortizationIncomeYearFour
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= dlr_BelowMarketLeasesNetOfAboveMarketLeasesMember
 
Below-market leases, 2019 4,632us-gaap_BelowMarketLeaseAmortizationIncomeYearFive
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= dlr_BelowMarketLeasesNetOfAboveMarketLeasesMember
 
Below-market leases, Thereafter 32,817us-gaap_BelowMarketLeaseAmortizationIncomeAfterYearFive
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= dlr_BelowMarketLeasesNetOfAboveMarketLeasesMember
 
Below-market lease, net $ 62,477us-gaap_BelowMarketLeaseNet
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= dlr_BelowMarketLeasesNetOfAboveMarketLeasesMember