CONSOLIDATED INCOME STATEMENTS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Operating Revenues:
Rental and other services	$ 2,412,076	$ 2,010,301	$ 1,746,828
Tenant reimbursements	624,637	440,224	355,903
Fee income and other	9,765	7,403	39,482
Total operating revenues	3,046,478	2,457,928	2,142,213
Operating Expenses:
Rental property operating and maintenance	957,065	759,616	660,177
Property taxes	129,516	124,014	102,497
Insurance	11,402	10,981	9,492
Depreciation and amortization	1,186,896	842,464	699,324
General and administrative	163,667	161,441	152,733
Transaction and integration expenses	45,327	76,048	20,491
Impairment of investments in real estate	0	28,992	0
Other	2,818	3,077	213
Total operating expenses	2,496,691	2,006,633	1,644,927
Operating income	549,787	451,295	497,286
Other Income (Expenses):
Equity in earnings of unconsolidated joint ventures	32,979	25,516	17,104
Gain on sale of properties	80,049	40,354	169,902
Interest and other income	3,481	3,655	(4,564)
Interest expense	(321,529)	(258,642)	(236,480)
Tax expense	(2,084)	(7,901)	(10,385)
(Loss) gain from early extinguishment of debt	(1,568)	1,990	(1,011)
Net income	341,115	256,267	431,852
Net income attributable to noncontrolling interests	(9,869)	(8,008)	(5,665)
Net income attributable to Digital Realty Trust, Inc./Digital Realty Trust, L.P.	331,246	248,259	426,187
Preferred stock dividends/Preferred units distributions	(81,316)	(68,802)	(83,771)
Issuance costs associated with redeemed preferred stock	0	(6,309)	(10,328)
Net income available to common stockholders/unitholders	$ 249,930	$ 173,148	$ 332,088
Net income per share/unit available to common stockholders/unitholders:
Basic (in dollars per share)	$ 1.21	$ 0.99	$ 2.21
Diluted (in dollars per share)	$ 1.21	$ 0.99	$ 2.20
Weighted average common shares/units outstanding:
Basic (in shares)	206,035,408	174,059,386	149,953,662
Diluted (in shares)	206,673,471	174,895,098	150,679,688
Digital Realty Trust, L.P.
Operating Revenues:
Rental and other services	$ 2,412,076	$ 2,010,301	$ 1,746,828
Tenant reimbursements	624,637	440,224	355,903
Fee income and other	9,765	7,403	39,482
Total operating revenues	3,046,478	2,457,928	2,142,213
Operating Expenses:
Rental property operating and maintenance	957,065	759,616	660,177
Property taxes	129,516	124,014	102,497
Insurance	11,402	10,981	9,492
Depreciation and amortization	1,186,896	842,464	699,324
General and administrative	163,667	161,441	152,733
Transaction and integration expenses	45,327	76,048	20,491
Impairment of investments in real estate	0	28,992	0
Other	2,818	3,077	213
Total operating expenses	2,496,691	2,006,633	1,644,927
Operating income	549,787	451,295	497,286
Other Income (Expenses):
Equity in earnings of unconsolidated joint ventures	32,979	25,516	17,104
Gain on sale of properties	80,049	40,354	169,902
Interest and other income	3,481	3,655	(4,564)
Interest expense	(321,529)	(258,642)	(236,480)
Tax expense	(2,084)	(7,901)	(10,385)
(Loss) gain from early extinguishment of debt	(1,568)	1,990	(1,011)
Net income	341,115	256,267	431,852
Net loss (income) attributable to noncontrolling interests in consolidated joint ventures	311	(4,238)	(367)
Net income attributable to Digital Realty Trust, Inc./Digital Realty Trust, L.P.	341,426	252,029	431,485
Preferred stock dividends/Preferred units distributions	(81,316)	(68,802)	(83,771)
Issuance costs associated with redeemed preferred stock	0	(6,309)	(10,328)
Net income available to common stockholders/unitholders	$ 260,110	$ 176,918	$ 337,386
Net income per share/unit available to common stockholders/unitholders:
Basic (in dollars per share)	$ 1.21	$ 0.99	$ 2.21
Diluted (in dollars per share)	$ 1.21	$ 0.99	$ 2.20
Weighted average common shares/units outstanding:
Basic (in shares)	214,312,871	178,055,936	152,359,680
Diluted (in shares)	214,950,934	178,891,648	153,085,706