Consolidated Statements of Operations and Comprehensive Income - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Revenues:
Rental and related revenue	$ 253,971	$ 226,374	$ 512,150	$ 445,129
General contractor and service fee revenue	17,721	12,137	48,834	19,751
Revenues, total	271,692	238,511	560,984	464,880
Expenses:
Rental expenses	18,515	17,557	46,645	36,400
Real estate taxes	41,368	36,763	82,538	73,490
General contractor and other services expenses	14,066	10,406	43,529	16,974
Depreciation and amortization	91,729	86,704	185,302	172,063
Costs and expenses, total	165,678	151,430	358,014	298,927
Other operating activities:
Equity in earnings of unconsolidated joint ventures	10,590	2,396	26,858	4,935
Gain on sale of properties	95,183	0	116,543	8,937
Gain on land sales	9,900	6,070	11,138	6,205
Other operating expenses	(338)	(1,546)	(1,483)	(2,658)
Impairment charges	0	0	0	(5,626)
Non-incremental costs related to successful leases	(4,027)	(4,034)	(6,985)	(6,559)
General and administrative expenses	(15,879)	(13,606)	(40,096)	(35,369)
Other Operating Activities, Net	95,429	(10,720)	105,975	(30,135)
Operating income	201,443	76,361	308,945	135,818
Other income (expenses):
Interest and other income, net	1,673	216	2,136	1,611
Interest expense	(21,072)	(22,841)	(43,579)	(46,335)
Loss on debt extinguishment	(3,938)	(14,972)	(4,008)	(32,778)
Gain on involuntary conversion	3,222	1,283	3,222	1,283
Income from continuing operations before income taxes	181,328	40,047	266,716	59,599
Income tax (expense) benefit	(3,672)	150	(8,856)	210
Income from continuing operations	177,656	40,197	257,860	59,809
Discontinued operations:
Gain on sale of properties	0	23	0	71
Income from discontinued operations	0	23	0	71
Net income	177,656	40,220	257,860	59,880
Net income attributable to noncontrolling interests	(1,839)	(400)	(2,681)	(604)
Net income attributable to common shareholders	$ 175,817	$ 39,820	$ 255,179	$ 59,276
Basic net income per common share/unit:
Continuing operations attributable to common shareholders/unitholders	$ 0.47	$ 0.11	$ 0.68	$ 0.16
Diluted net income per common share/unit:
Continuing operations attributable to common shareholders/unitholders	$ 0.47	$ 0.11	$ 0.68	$ 0.16
Weighted average number of common shares/units outstanding	376,020	368,836	374,850	368,513
Weighted average number of common shares/units and potential dilutive securities	381,621	372,573	380,334	372,197
Comprehensive income:
Net income	$ 177,656	$ 40,220	$ 257,860	$ 59,880
Amortization of interest rate swap contracts	890	889	1,779	1,690
Comprehensive income	178,546	41,109	259,639	61,570
Duke Realty Limited Partnership [Member]
Revenues:
Rental and related revenue	253,971	226,374	512,150	445,129
General contractor and service fee revenue	17,721	12,137	48,834	19,751
Revenues, total	271,692	238,511	560,984	464,880
Expenses:
Rental expenses	18,515	17,557	46,645	36,400
Real estate taxes	41,368	36,763	82,538	73,490
General contractor and other services expenses	14,066	10,406	43,529	16,974
Depreciation and amortization	91,729	86,704	185,302	172,063
Costs and expenses, total	165,678	151,430	358,014	298,927
Other operating activities:
Equity in earnings of unconsolidated joint ventures	10,590	2,396	26,858	4,935
Gain on sale of properties	95,183	0	116,543	8,937
Gain on land sales	9,900	6,070	11,138	6,205
Other operating expenses	(338)	(1,546)	(1,483)	(2,658)
Impairment charges	0	0	0	(5,626)
Non-incremental costs related to successful leases	(4,027)	(4,034)	(6,985)	(6,559)
General and administrative expenses	(15,879)	(13,606)	(40,096)	(35,369)
Other Operating Activities, Net	95,429	(10,720)	105,975	(30,135)
Operating income	201,443	76,361	308,945	135,818
Other income (expenses):
Interest and other income, net	1,673	216	2,136	1,611
Interest expense	(21,072)	(22,841)	(43,579)	(46,335)
Loss on debt extinguishment	(3,938)	(14,972)	(4,008)	(32,778)
Gain on involuntary conversion	3,222	1,283	3,222	1,283
Income from continuing operations before income taxes	181,328	40,047	266,716	59,599
Income tax (expense) benefit	(3,672)	150	(8,856)	210
Income from continuing operations	177,656	40,197	257,860	59,809
Discontinued operations:
Gain on sale of properties	0	23	0	71
Income from discontinued operations	0	23	0	71
Net income	177,656	40,220	257,860	59,880
Net income attributable to noncontrolling interests	(101)	(44)	(182)	(78)
Net income attributable to common shareholders	$ 177,555	$ 40,176	$ 257,678	$ 59,802
Basic net income per common share/unit:
Continuing operations attributable to common shareholders/unitholders	$ 0.47	$ 0.11	$ 0.68	$ 0.16
Diluted net income per common share/unit:
Continuing operations attributable to common shareholders/unitholders	$ 0.47	$ 0.11	$ 0.68	$ 0.16
Weighted average number of common shares/units outstanding	379,790	372,167	378,523	371,790
Weighted average number of common shares/units and potential dilutive securities	381,621	372,573	380,334	372,197
Comprehensive income:
Net income	$ 177,656	$ 40,220	$ 257,860	$ 59,880
Amortization of interest rate swap contracts	890	889	1,779	1,690
Comprehensive income	$ 178,546	$ 41,109	$ 259,639	$ 61,570