Consolidated Statements of Operations and Comprehensive Income - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Revenues:
Rental and related revenue	$ 235,391	$ 215,374	$ 680,520	$ 638,446
General contractor and service fee revenue	26,637	25,955	46,388	104,838
Revenues, total	262,028	241,329	726,908	743,284
Expenses:
Rental expenses	20,231	19,158	56,631	57,423
Real estate taxes	37,027	31,739	110,517	96,556
General contractor and other services expenses	24,604	23,640	41,578	99,415
Depreciation and amortization	88,596	83,924	260,659	242,920
Costs and expenses, total	170,458	158,461	469,385	496,314
Other operating activities:
Equity in earnings of unconsolidated joint ventures	4,023	3,736	8,958	12,594
Gain on sale of properties	10,968	173,646	19,905	204,075
Gain on land sales	2,346	3,869	8,551	6,569
Other operating expenses	(1,772)	(874)	(4,430)	(4,515)
Impairment charges	0	0	(5,626)	0
Non-incremental costs related to successful leases	(4,058)	(1,123)	(10,617)	(6,726)
General and administrative expenses	(11,439)	(13,720)	(46,808)	(49,123)
Other Operating Activities, Net	68	165,534	(30,067)	162,874
Operating income	91,638	248,402	227,456	409,844
Other income (expenses):
Interest and other income, net	32	2,085	1,643	7,377
Interest expense	(23,059)	(22,604)	(69,394)	(68,246)
Loss on debt extinguishment	(120)	0	(32,898)	(13)
Gain on involuntary conversion	3,029	0	4,312	2,259
Income from continuing operations before income taxes	71,520	227,883	131,119	351,221
Income tax benefit (expense)	956	536	1,166	(6,465)
Income from continuing operations	72,476	228,419	132,285	344,756
Discontinued operations:
Gain on sale of properties	40	112	111	366
Income from discontinued operations	40	112	111	366
Net income	72,516	228,531	132,396	345,122
Net income attributable to noncontrolling interests	(693)	(1,965)	(1,297)	(2,952)
Net income attributable to common shareholders	$ 71,823	$ 226,566	$ 131,099	$ 342,170
Basic net income per common share/unit:
Continuing operations attributable to common shareholders/unitholders	$ 0.19	$ 0.62	$ 0.35	$ 0.95
Diluted net income per common share/unit:
Continuing operations attributable to common shareholders/unitholders	$ 0.19	$ 0.62	$ 0.35	$ 0.94
Weighted average number of common shares/units outstanding	371,082	362,416	369,375	360,424
Weighted average number of common shares/units and potential dilutive securities	374,834	367,271	373,091	365,343
Comprehensive income:
Net income	$ 72,516	$ 228,531	$ 132,396	$ 345,122
Unrealized losses on interest rate swap contracts	0	(13,387)	0	(37,428)
Amortization of interest rate swap contracts	889	0	2,579	0
Comprehensive income	73,405	215,144	134,975	307,694
Duke Realty Limited Partnership [Member]
Revenues:
Rental and related revenue	235,391	215,374	680,520	638,446
General contractor and service fee revenue	26,637	25,955	46,388	104,838
Revenues, total	262,028	241,329	726,908	743,284
Expenses:
Rental expenses	20,231	19,158	56,631	57,423
Real estate taxes	37,027	31,739	110,517	96,556
General contractor and other services expenses	24,604	23,640	41,578	99,415
Depreciation and amortization	88,596	83,924	260,659	242,920
Costs and expenses, total	170,458	158,461	469,385	496,314
Other operating activities:
Equity in earnings of unconsolidated joint ventures	4,023	3,736	8,958	12,594
Gain on sale of properties	10,968	173,646	19,905	204,075
Gain on land sales	2,346	3,869	8,551	6,569
Other operating expenses	(1,772)	(874)	(4,430)	(4,515)
Impairment charges	0	0	(5,626)	0
Non-incremental costs related to successful leases	(4,058)	(1,123)	(10,617)	(6,726)
General and administrative expenses	(11,439)	(13,720)	(46,808)	(49,123)
Other Operating Activities, Net	68	165,534	(30,067)	162,874
Operating income	91,638	248,402	227,456	409,844
Other income (expenses):
Interest and other income, net	32	2,085	1,643	7,377
Interest expense	(23,059)	(22,604)	(69,394)	(68,246)
Loss on debt extinguishment	(120)	0	(32,898)	(13)
Gain on involuntary conversion	3,029	0	4,312	2,259
Income from continuing operations before income taxes	71,520	227,883	131,119	351,221
Income tax benefit (expense)	956	536	1,166	(6,465)
Income from continuing operations	72,476	228,419	132,285	344,756
Discontinued operations:
Gain on sale of properties	40	112	111	366
Income from discontinued operations	40	112	111	366
Net income	72,516	228,531	132,396	345,122
Net (income) loss attributable to noncontrolling interests	(55)	3	(133)	19
Net income attributable to common shareholders	$ 72,461	$ 228,534	$ 132,263	$ 345,141
Basic net income per common share/unit:
Continuing operations attributable to common shareholders/unitholders	$ 0.19	$ 0.62	$ 0.35	$ 0.95
Diluted net income per common share/unit:
Continuing operations attributable to common shareholders/unitholders	$ 0.19	$ 0.62	$ 0.35	$ 0.94
Weighted average number of common shares/units outstanding	374,412	365,558	372,671	363,542
Weighted average number of common shares/units and potential dilutive securities	374,834	367,271	373,091	365,343
Comprehensive income:
Net income	$ 72,516	$ 228,531	$ 132,396	$ 345,122
Unrealized losses on interest rate swap contracts	0	(13,387)	0	(37,428)
Amortization of interest rate swap contracts	889	0	2,579	0
Comprehensive income	$ 73,405	$ 215,144	$ 134,975	$ 307,694