Condensed Consolidated Income Statements (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Operating Revenues:
Rental	$ 281,399	$ 222,834
Tenant reimbursements	75,917	57,862
Construction management	806	2,452
Other	248
Total operating revenues	358,370	283,148
Operating Expenses:
Rental property operating and maintenance	106,780	79,845
Property taxes	21,042	16,042
Insurance	2,205	2,230
Construction management	384	193
Depreciation and amortization	111,623	83,995
General and administrative	15,951	14,250
Transactions	1,763	677
Other	36
Total operating expenses	259,784	197,232
Operating income	98,586	85,916
Other Income (Expenses):
Equity in earnings of unconsolidated joint ventures	2,335	1,389
Interest and other income	41	709
Interest expense	(48,078)	(38,030)
Tax expense	(1,203)	(721)
Net income	51,681	49,263
Net income attributable to noncontrolling interests	(970)	(1,221)
Net income attributable to Digital Realty Trust, Inc./Digital Realty Trust, L.P.	50,711	48,042
Preferred stock dividends/Preferred units distributions	(8,054)	(8,831)
Net income available to common stockholders/unitholders	42,657	39,211
Net income per share/unit available to common stockholders/unitholders:
Basic	$ 0.34	$ 0.37
Diluted	$ 0.34	$ 0.36
Weighted average common shares/units outstanding:
Basic	126,445,285	107,099,856
Diluted	126,738,339	107,584,856
Digital Realty Trust, L.P. [Member]
Operating Revenues:
Rental	281,399	222,834
Tenant reimbursements	75,917	57,862
Construction management	806	2,452
Other	248
Total operating revenues	358,370	283,148
Operating Expenses:
Rental property operating and maintenance	106,780	79,845
Property taxes	21,042	16,042
Insurance	2,205	2,230
Construction management	384	193
Depreciation and amortization	111,623	83,995
General and administrative	15,951	14,250
Transactions	1,763	677
Other	36
Total operating expenses	259,784	197,232
Operating income	98,586	85,916
Other Income (Expenses):
Equity in earnings of unconsolidated joint ventures	2,335	1,389
Interest and other income	41	709
Interest expense	(48,078)	(38,030)
Tax expense	(1,203)	(721)
Net income	51,681	49,263
Net (income) loss attributable to noncontrolling interests in consolidated joint ventures	(146)	365
Net income attributable to Digital Realty Trust, Inc./Digital Realty Trust, L.P.	51,535	49,628
Preferred stock dividends/Preferred units distributions	(8,054)	(8,831)
Net income available to common stockholders/unitholders	$ 43,481	$ 40,797
Net income per share/unit available to common stockholders/unitholders:
Basic	$ 0.34	$ 0.37
Diluted	$ 0.34	$ 0.36
Weighted average common shares/units outstanding:
Basic	128,888,041	111,432,822
Diluted	129,181,095	111,917,822