Consolidated Statements of Operations and Comprehensive Income - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Revenues:
Rental and related revenue	$ 256,815	$ 235,391	$ 768,965	$ 680,520
General contractor and service fee revenue	23,550	26,637	72,384	46,388
Revenues, total	280,365	262,028	841,349	726,908
Expenses:
Rental expenses	19,766	20,231	66,411	56,631
Real estate taxes	39,972	37,027	122,510	110,517
General contractor and other services expenses	19,040	24,604	62,569	41,578
Depreciation and amortization	88,033	88,596	273,335	260,659
Costs and expenses, total	166,811	170,458	524,825	469,385
Other operating activities:
Equity in earnings of unconsolidated joint ventures	2,966	4,023	29,824	8,958
Gain on sale of properties	439,212	10,968	555,755	19,905
Gain on land sales	1,653	2,346	12,791	8,551
Other operating expenses	(1,290)	(1,772)	(2,773)	(4,430)
Impairment charges	0	0	0	(5,626)
Non-incremental costs related to successful leases	(3,334)	(4,058)	(10,319)	(10,617)
General and administrative expenses	(14,152)	(11,439)	(54,248)	(46,808)
Other Operating Activities, Net	425,055	68	531,030	(30,067)
Operating income	538,609	91,638	847,554	227,456
Other income (expenses):
Interest and other income, net	1,433	32	3,569	1,643
Interest expense	(20,003)	(23,059)	(63,582)	(69,394)
Loss on debt extinguishment	(13,893)	(120)	(17,901)	(32,898)
Gain on involuntary conversion	0	3,029	3,222	4,312
Income from continuing operations before income taxes	506,146	71,520	772,862	131,119
Income tax (expense) benefit	(6,381)	956	(15,237)	1,166
Income from continuing operations	499,765	72,476	757,625	132,285
Discontinued operations:
Gain on sale of properties	0	40	0	111
Income from discontinued operations	0	40	0	111
Net income	499,765	72,516	757,625	132,396
Net income attributable to noncontrolling interests	(4,948)	(693)	(7,629)	(1,297)
Net income attributable to common shareholders	$ 494,817	$ 71,823	$ 749,996	$ 131,099
Basic net income per common share/unit:
Continuing operations attributable to common shareholders/unitholders	$ 1.30	$ 0.19	$ 1.99	$ 0.35
Diluted net income per common share/unit:
Continuing operations attributable to common shareholders/unitholders	$ 1.30	$ 0.19	$ 1.98	$ 0.35
Weighted average number of common shares/units outstanding	379,220	371,082	376,323	369,375
Weighted average number of common shares/units and potential dilutive securities	384,624	374,834	381,811	373,091
Comprehensive income:
Net income	$ 499,765	$ 72,516	$ 757,625	$ 132,396
Amortization of interest rate swap contracts	889	889	2,668	2,579
Comprehensive income	500,654	73,405	760,293	134,975
Duke Realty Limited Partnership [Member]
Revenues:
Rental and related revenue	256,815	235,391	768,965	680,520
General contractor and service fee revenue	23,550	26,637	72,384	46,388
Revenues, total	280,365	262,028	841,349	726,908
Expenses:
Rental expenses	19,766	20,231	66,411	56,631
Real estate taxes	39,972	37,027	122,510	110,517
General contractor and other services expenses	19,040	24,604	62,569	41,578
Depreciation and amortization	88,033	88,596	273,335	260,659
Costs and expenses, total	166,811	170,458	524,825	469,385
Other operating activities:
Equity in earnings of unconsolidated joint ventures	2,966	4,023	29,824	8,958
Gain on sale of properties	439,212	10,968	555,755	19,905
Gain on land sales	1,653	2,346	12,791	8,551
Other operating expenses	(1,290)	(1,772)	(2,773)	(4,430)
Impairment charges	0	0	0	(5,626)
Non-incremental costs related to successful leases	(3,334)	(4,058)	(10,319)	(10,617)
General and administrative expenses	(14,152)	(11,439)	(54,248)	(46,808)
Other Operating Activities, Net	425,055	68	531,030	(30,067)
Operating income	538,609	91,638	847,554	227,456
Other income (expenses):
Interest and other income, net	1,433	32	3,569	1,643
Interest expense	(20,003)	(23,059)	(63,582)	(69,394)
Loss on debt extinguishment	(13,893)	(120)	(17,901)	(32,898)
Gain on involuntary conversion	0	3,029	3,222	4,312
Income from continuing operations before income taxes	506,146	71,520	772,862	131,119
Income tax (expense) benefit	(6,381)	956	(15,237)	1,166
Income from continuing operations	499,765	72,476	757,625	132,285
Discontinued operations:
Gain on sale of properties	0	40	0	111
Income from discontinued operations	0	40	0	111
Net income	499,765	72,516	757,625	132,396
Net income attributable to noncontrolling interests	(100)	(55)	(282)	(133)
Net income attributable to common shareholders	$ 499,665	$ 72,461	$ 757,343	$ 132,263
Basic net income per common share/unit:
Continuing operations attributable to common shareholders/unitholders	$ 1.30	$ 0.19	$ 1.99	$ 0.35
Diluted net income per common share/unit:
Continuing operations attributable to common shareholders/unitholders	$ 1.30	$ 0.19	$ 1.98	$ 0.35
Weighted average number of common shares/units outstanding	382,981	374,412	380,025	372,671
Weighted average number of common shares/units and potential dilutive securities	384,624	374,834	381,811	373,091
Comprehensive income:
Net income	$ 499,765	$ 72,516	$ 757,625	$ 132,396
Amortization of interest rate swap contracts	889	889	2,668	2,579
Comprehensive income	$ 500,654	$ 73,405	$ 760,293	$ 134,975