Consolidated Statements of Operations and Comprehensive Income - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Revenues:
Rental and related revenue	$ 226,374	$ 213,107	$ 445,129	$ 423,072
General contractor and service fee revenue	12,137	23,919	19,751	78,883
Revenues, total	238,511	237,026	464,880	501,955
Expenses:
Rental expenses	17,557	17,597	36,400	38,265
Real estate taxes	36,763	32,375	73,490	64,817
General contractor and other services expenses	10,406	23,189	16,974	75,775
Depreciation and amortization	86,704	83,004	172,063	158,996
Costs and expenses, total	151,430	156,165	298,927	337,853
Other operating activities:
Equity in earnings of unconsolidated joint ventures	2,396	4,143	4,935	8,858
Gain on sale of properties	0	30,592	8,937	30,429
Gain on land sales	6,070	1,950	6,205	2,700
Other operating expenses	(1,546)	(1,518)	(2,658)	(3,641)
Impairment charges	0	0	(5,626)	0
Non-incremental costs related to successful leases	(4,034)	(3,447)	(6,559)	(5,603)
General and administrative expenses	(13,606)	(13,420)	(35,369)	(35,403)
Other Operating Activities, Net	(10,720)	18,300	(30,135)	(2,660)
Operating income	76,361	99,161	135,818	161,442
Other income (expenses):
Interest and other income, net	216	2,534	1,611	5,292
Interest expense	(22,841)	(23,510)	(46,335)	(45,642)
Loss on debt extinguishment	(14,972)	0	(32,778)	(13)
Gain on involuntary conversion	1,283	0	1,283	2,259
Income from continuing operations before income taxes	40,047	78,185	59,599	123,338
Income tax benefit (expense)	150	(6,616)	210	(7,001)
Income from continuing operations	40,197	71,569	59,809	116,337
Discontinued operations:
Gain on sale of properties	23	99	71	254
Income from discontinued operations	23	99	71	254
Net income	40,220	71,668	59,880	116,591
Net income attributable to noncontrolling interests	(400)	(615)	(604)	(987)
Net income attributable to common shareholders	$ 39,820	$ 71,053	$ 59,276	$ 115,604
Basic net income per common share/unit:
Continuing operations attributable to common shareholders/unitholders	$ 0.11	$ 0.20	$ 0.16	$ 0.32
Diluted net income per common share/unit:
Continuing operations attributable to common shareholders/unitholders	$ 0.11	$ 0.20	$ 0.16	$ 0.32
Weighted average number of common shares/units outstanding	368,836	359,681	368,513	359,412
Weighted average number of common shares/units and potential dilutive securities	372,573	362,926	372,197	362,615
Comprehensive income:
Net income	$ 40,220	$ 71,668	$ 59,880	$ 116,591
Unrealized losses on interest rate swap contracts	0	(14,699)	0	(24,041)
Amortization of interest rate swap contracts	889	0	1,690	0
Comprehensive income	41,109	56,969	61,570	92,550
Duke Realty Limited Partnership [Member]
Revenues:
Rental and related revenue	226,374	213,107	445,129	423,072
General contractor and service fee revenue	12,137	23,919	19,751	78,883
Revenues, total	238,511	237,026	464,880	501,955
Expenses:
Rental expenses	17,557	17,597	36,400	38,265
Real estate taxes	36,763	32,375	73,490	64,817
General contractor and other services expenses	10,406	23,189	16,974	75,775
Depreciation and amortization	86,704	83,004	172,063	158,996
Costs and expenses, total	151,430	156,165	298,927	337,853
Other operating activities:
Equity in earnings of unconsolidated joint ventures	2,396	4,143	4,935	8,858
Gain on sale of properties	0	30,592	8,937	30,429
Gain on land sales	6,070	1,950	6,205	2,700
Other operating expenses	(1,546)	(1,518)	(2,658)	(3,641)
Impairment charges	0	0	(5,626)	0
Non-incremental costs related to successful leases	(4,034)	(3,447)	(6,559)	(5,603)
General and administrative expenses	(13,606)	(13,420)	(35,369)	(35,403)
Other Operating Activities, Net	(10,720)	18,300	(30,135)	(2,660)
Operating income	76,361	99,161	135,818	161,442
Other income (expenses):
Interest and other income, net	216	2,534	1,611	5,292
Interest expense	(22,841)	(23,510)	(46,335)	(45,642)
Loss on debt extinguishment	(14,972)	0	(32,778)	(13)
Gain on involuntary conversion	1,283	0	1,283	2,259
Income from continuing operations before income taxes	40,047	78,185	59,599	123,338
Income tax benefit (expense)	150	(6,616)	210	(7,001)
Income from continuing operations	40,197	71,569	59,809	116,337
Discontinued operations:
Gain on sale of properties	23	99	71	254
Income from discontinued operations	23	99	71	254
Net income	40,220	71,668	59,880	116,591
Net (income) loss attributable to noncontrolling interests	(44)	6	(78)	16
Net income attributable to common shareholders	$ 40,176	$ 71,674	$ 59,802	$ 116,607
Basic net income per common share/unit:
Continuing operations attributable to common shareholders/unitholders	$ 0.11	$ 0.20	$ 0.16	$ 0.32
Diluted net income per common share/unit:
Continuing operations attributable to common shareholders/unitholders	$ 0.11	$ 0.20	$ 0.16	$ 0.32
Weighted average number of common shares/units outstanding	372,167	362,826	371,790	362,517
Weighted average number of common shares/units and potential dilutive securities	372,573	362,926	372,197	362,615
Comprehensive income:
Net income	$ 40,220	$ 71,668	$ 59,880	$ 116,591
Unrealized losses on interest rate swap contracts	0	(14,699)	0	(24,041)
Amortization of interest rate swap contracts	889	0	1,690	0
Comprehensive income	$ 41,109	$ 56,969	$ 61,570	$ 92,550