Condensed Consolidated Income Statements (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
Operating Revenues:
Rental	$ 222,834	$ 196,795
Tenant reimbursements	57,862	51,834
Construction management	2,452	1,817
Other		295
Total operating revenues	283,148	250,741
Operating Expenses:
Rental property operating and maintenance	79,845	71,723
Property taxes	16,042	13,471
Insurance	2,230	2,051
Construction management	193	1,737
Depreciation and amortization	83,995	73,918
General and administrative	14,250	12,405
Transactions	677	681
Other		90
Total operating expenses	197,232	176,076
Operating income	85,916	74,665
Other Income (Expenses):
Equity in earnings of unconsolidated joint ventures	1,389	1,208
Interest and other income	709	264
Interest expense	(38,030)	(36,082)
Tax expense	(721)	(428)
Loss from early extinguishment of debt		(615)
Net income	49,263	39,012
Net income attributable to noncontrolling interests	(1,221)	(1,510)
Net income attributable to Digital Realty Trust, Inc./Digital Realty Trust, L.P.	48,042	37,502
Preferred stock dividends/Preferred units distributions	(8,831)	(6,522)
Net income available to common stockholders/unitholders	39,211	30,980
Net income per share/unit available to common stockholders/unitholders:
Basic	$ 0.37	$ 0.34
Diluted	$ 0.36	$ 0.33
Weighted average common shares/units outstanding:
Basic	107,099,856	91,428,355
Diluted	107,584,856	92,600,215
Digital Realty Trust, L.P. [Member]
Operating Revenues:
Rental	222,834	196,795
Tenant reimbursements	57,862	51,834
Construction management	2,452	1,817
Other		295
Total operating revenues	283,148	250,741
Operating Expenses:
Rental property operating and maintenance	79,845	71,723
Property taxes	16,042	13,471
Insurance	2,230	2,051
Construction management	193	1,737
Depreciation and amortization	83,995	73,918
General and administrative	14,250	12,405
Transactions	677	681
Other		90
Total operating expenses	197,232	176,076
Operating income	85,916	74,665
Other Income (Expenses):
Equity in earnings of unconsolidated joint ventures	1,389	1,208
Interest and other income	709	264
Interest expense	(38,030)	(36,082)
Tax expense	(721)	(428)
Loss from early extinguishment of debt		(615)
Net income	49,263	39,012
Net loss attributable to noncontrolling interests in consolidated joint ventures	365	142
Net income attributable to Digital Realty Trust, Inc./Digital Realty Trust, L.P.	49,628	39,154
Preferred stock dividends/Preferred units distributions	(8,831)	(6,522)
Net income available to common stockholders/unitholders	$ 40,797	$ 32,632
Net income per share/unit available to common stockholders/unitholders:
Basic	$ 0.37	$ 0.34
Diluted	$ 0.36	$ 0.33
Weighted average common shares/units outstanding:
Basic	111,432,822	96,302,608
Diluted	111,917,822	97,474,468