Consolidated Statements of Operations and Comprehensive Income - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Revenues:
Rental and related revenue	$ 192,093	$ 165,836	$ 385,549	$ 337,512
General contractor and service fee revenue	18,465	23,576	59,566	32,975
Revenues, total	210,558	189,412	445,115	370,487
Expenses:
Rental expenses	16,769	14,506	37,165	30,743
Real estate taxes	31,196	26,902	62,342	53,412
General contractor and other services expenses	15,253	22,374	55,662	29,998
Depreciation and amortization	75,832	67,013	153,361	129,036
Costs and expenses, total	139,050	130,795	308,530	243,189
Other operating activities:
Equity in earnings of unconsolidated joint ventures	1,682	51,933	9,969	56,682
Promote income	0	20,007	0	20,007
Gain on sale of properties	149,962	34,341	194,848	71,387
Gain on land sales	357	1,279	3,306	2,784
Other operating expenses	(1,137)	(718)	(1,923)	(1,457)
Impairment charges	0	0	0	(859)
General and administrative expenses	(13,459)	(11,858)	(34,482)	(31,090)
Other Operating Activities, Net	137,405	94,984	171,718	117,454
Operating income	208,913	153,601	308,303	244,752
Other income (expenses):
Interest and other income, net	4,727	2,260	9,190	2,792
Interest expense	(20,675)	(21,680)	(40,675)	(44,566)
Loss on debt extinguishment	(151)	(9,561)	(151)	(9,536)
Income from continuing operations before income taxes	192,814	124,620	276,667	193,442
Income tax expense	(63)	(5,426)	(10,392)	(7,557)
Income from continuing operations	192,751	119,194	266,275	185,885
Discontinued operations:
Income before gain on sales and income tax	31	11,095	23	15,185
Gain on sale of depreciable properties	2,889	1,109,091	3,021	1,109,091
Income tax expense	0	11,613	0	11,613
Income from discontinued operations	2,920	1,108,573	3,044	1,112,663
Net income	195,671	1,227,767	269,319	1,298,548
Net income attributable to noncontrolling interests	(1,826)	(17,224)	(2,511)	(17,805)
Net income attributable to common shareholders	$ 193,845	$ 1,210,543	$ 266,808	$ 1,280,743
Basic net income per common share/unit:
Continuing operations attributable to common shareholders/unitholders	$ 0.53	$ 0.33	$ 0.74	$ 0.52
Discontinuing operations attributable to common shareholders/unitholders	0.01	3.07	0.01	3.08
Earnings Per Share, Basic	0.54	3.40	0.75	3.60
Diluted net income per common share/unit:
Continuing operations attributable to common shareholders/unitholders	0.53	0.33	0.73	0.51
Discontinued operations attributable to common shareholders/unitholders	0.01	3.05	0.01	3.06
Earnings Per Share, Diluted	$ 0.54	$ 3.38	$ 0.74	$ 3.57
Weighted average number of common shares/units outstanding	357,054	355,647	356,898	355,466
Weighted average number of common shares/units and potential dilutive securities	362,741	361,981	362,551	361,789
Comprehensive income:
Net income	$ 195,671	$ 1,227,767	$ 269,319	$ 1,298,548
Other comprehensive loss:
Amortization of interest contracts	0	(426)	0	(682)
Comprehensive income	195,671	1,227,341	269,319	1,297,866
Duke Realty Limited Partnership [Member]
Revenues:
Rental and related revenue	192,093	165,836	385,549	337,512
General contractor and service fee revenue	18,465	23,576	59,566	32,975
Revenues, total	210,558	189,412	445,115	370,487
Expenses:
Rental expenses	16,769	14,506	37,165	30,743
Real estate taxes	31,196	26,902	62,342	53,412
General contractor and other services expenses	15,253	22,374	55,662	29,998
Depreciation and amortization	75,832	67,013	153,361	129,036
Costs and expenses, total	139,050	130,795	308,530	243,189
Other operating activities:
Equity in earnings of unconsolidated joint ventures	1,682	51,933	9,969	56,682
Promote income	0	20,007	0	20,007
Gain on sale of properties	149,962	34,341	194,848	71,387
Gain on land sales	357	1,279	3,306	2,784
Other operating expenses	(1,137)	(718)	(1,923)	(1,457)
Impairment charges	0	0	0	(859)
General and administrative expenses	(13,459)	(11,858)	(34,482)	(31,090)
Other Operating Activities, Net	137,405	94,984	171,718	117,454
Operating income	208,913	153,601	308,303	244,752
Other income (expenses):
Interest and other income, net	4,727	2,260	9,190	2,792
Interest expense	(20,675)	(21,680)	(40,675)	(44,566)
Loss on debt extinguishment	(151)	(9,561)	(151)	(9,536)
Income from continuing operations before income taxes	192,814	124,620	276,667	193,442
Income tax expense	(63)	(5,426)	(10,392)	(7,557)
Income from continuing operations	192,751	119,194	266,275	185,885
Discontinued operations:
Income before gain on sales and income tax	31	11,095	23	15,185
Gain on sale of depreciable properties	2,889	1,109,091	3,021	1,109,091
Income tax expense	0	11,613	0	11,613
Income from discontinued operations	2,920	1,108,573	3,044	1,112,663
Net income	195,671	1,227,767	269,319	1,298,548
Net income attributable to noncontrolling interests	(2)	(5,984)	(4)	(5,913)
Net income attributable to common shareholders	$ 195,669	$ 1,221,783	$ 269,315	$ 1,292,635
Basic net income per common share/unit:
Continuing operations attributable to common shareholders/unitholders	$ 0.53	$ 0.33	$ 0.74	$ 0.52
Discontinuing operations attributable to common shareholders/unitholders	0.01	3.07	0.01	3.08
Earnings Per Share, Basic	0.54	3.40	0.75	3.60
Diluted net income per common share/unit:
Continuing operations attributable to common shareholders/unitholders	0.53	0.33	0.73	0.51
Discontinued operations attributable to common shareholders/unitholders	0.01	3.05	0.01	3.06
Earnings Per Share, Diluted	$ 0.54	$ 3.38	$ 0.74	$ 3.57
Weighted average number of common shares/units outstanding	360,447	358,952	360,272	358,776
Weighted average number of common shares/units and potential dilutive securities	362,741	361,981	362,551	361,789
Comprehensive income:
Net income	$ 195,671	$ 1,227,767	$ 269,319	$ 1,298,548
Other comprehensive loss:
Amortization of interest contracts	0	(426)	0	(682)
Comprehensive income	$ 195,671	$ 1,227,341	$ 269,319	$ 1,297,866