Condensed Consolidated Income Statements (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Operating Revenues:
Rental	$ 290,712	$ 260,052	$ 858,064	$ 717,809
Tenant reimbursements	88,059	78,878	240,657	197,162
Construction management	671	2,497	2,205	6,903
Other	14	1,052	402	7,457
Total operating revenues	379,456	342,479	1,101,328	929,331
Operating Expenses:
Rental property operating	128,291	106,660	341,407	274,081
Property taxes	26,074	17,982	66,490	49,793
Insurance	2,144	2,463	6,587	6,953
Construction management	51	623	729	1,412
Depreciation and amortization	121,198	101,840	348,688	274,835
General and administrative	16,275	14,409	50,117	43,768
Transactions	243	504	3,497	5,789
Other	3	923	56	1,260
Total operating expenses	294,279	245,404	817,571	657,891
Operating income	85,177	97,075	283,757	271,440
Other Income (Expenses):
Equity in earnings of unconsolidated joint ventures	2,174	1,520	6,839	6,402
Gain on insurance settlement			5,597
Gain on contribution of investment properties to unconsolidated joint venture	115,054		115,054
Interest and other income	(127)	83	(92)	2,008
Interest expense	(47,742)	(41,047)	(143,403)	(116,758)
Tax expense	(352)	(710)	(1,765)	(2,637)
Loss from early extinguishment of debt	(704)		(1,205)	(303)
Net income	153,480	56,921	264,782	160,152
Net income attributable to noncontrolling interests	(2,882)	(1,529)	(4,997)	(4,384)
Net income attributable to Digital Realty Trust, Inc./Digital Realty Trust, L.P.	150,598	55,392	259,785	155,768
Preferred stock dividends/Preferred units distributions	(11,726)	(9,777)	(31,179)	(28,921)
Net income available to common stockholders/unitholders	138,872	45,615	228,606	126,847
Net income per share/unit available to common stockholders/unitholders:
Basic	$ 1.08	$ 0.37	$ 1.79	$ 1.12
Diluted	$ 1.06	$ 0.37	$ 1.79	$ 1.12
Weighted average common shares/units outstanding:
Basic	128,427,444	122,026,421	127,771,419	112,995,512
Diluted	135,301,765	122,353,511	127,955,769	113,275,221
Digital Realty Trust, L.P. [Member]
Operating Revenues:
Rental	290,712	260,052	858,064	717,809
Tenant reimbursements	88,059	78,878	240,657	197,162
Construction management	671	2,497	2,205	6,903
Other	14	1,052	402	7,457
Total operating revenues	379,456	342,479	1,101,328	929,331
Operating Expenses:
Rental property operating	128,291	106,660	341,407	274,081
Property taxes	26,074	17,982	66,490	49,793
Insurance	2,144	2,463	6,587	6,953
Construction management	51	623	729	1,412
Depreciation and amortization	121,198	101,840	348,688	274,835
General and administrative	16,275	14,409	50,117	43,768
Transactions	243	504	3,497	5,789
Other	3	923	56	1,260
Total operating expenses	294,279	245,404	817,571	657,891
Operating income	85,177	97,075	283,757	271,440
Other Income (Expenses):
Equity in earnings of unconsolidated joint ventures	2,174	1,520	6,839	6,402
Gain on insurance settlement			5,597
Gain on contribution of investment properties to unconsolidated joint venture	115,054		115,054
Interest and other income	(127)	83	(92)	2,008
Interest expense	(47,742)	(41,047)	(143,403)	(116,758)
Tax expense	(352)	(710)	(1,765)	(2,637)
Loss from early extinguishment of debt	(704)		(1,205)	(303)
Net income	153,480	56,921	264,782	160,152
Net (income) loss attributable to noncontrolling interests in consolidated joint ventures	(125)	45	(480)	437
Net income attributable to Digital Realty Trust, Inc./Digital Realty Trust, L.P.	153,355	56,966	264,302	160,589
Preferred stock dividends/Preferred units distributions	(11,726)	(9,777)	(31,179)	(28,921)
Net income available to common stockholders/unitholders	$ 141,629	$ 47,189	$ 233,123	$ 131,668
Net income per share/unit available to common stockholders/unitholders:
Basic	$ 1.08	$ 0.37	$ 1.79	$ 1.12
Diluted	$ 1.06	$ 0.37	$ 1.79	$ 1.12
Weighted average common shares/units outstanding:
Basic	130,977,193	126,242,751	130,287,383	117,291,480
Diluted	137,851,514	126,569,841	130,471,733	117,571,189