Duke Realty (DRE) 10-Q 1 Nov 19 2019 Q3 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	9 Months Ended
	Sep. 30, 2019	Oct. 30, 2019
Entity Information [Line Items]
Document Type	10-Q
Amendment Flag	false
Document Quarterly Report	true
Document Period End Date	Sep. 30, 2019
Document Transition Report	false
Document Fiscal Year Focus	2019
Document Fiscal Period Focus	Q3
Current Fiscal Year End Date	--12-31
Entity File Number	1-9044
Entity Registrant Name	DUKE REALTY CORPORATION
Entity Central Index Key	0000783280
Entity Incorporation, State or Country Code	IN
Entity Tax Identification Number	35-1740409
Entity Address, Address Line One	600 East 96th Street, Suite 100
Entity Address, City or Town	Indianapolis,
Entity Address, State or Province	IN
Entity Address, Postal Zip Code	46240
City Area Code	(317)
Local Phone Number	808-6000
Title of 12(b) Security	Common Stock, $0.01 par value
Trading Symbol	DRE
Security Exchange Name	NYSE
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Shell Company	false
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Common Stock, Shares Outstanding		367,570,672
Duke Realty Limited Partnership [Member]
Entity Information [Line Items]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Sep. 30, 2019
Document Fiscal Year Focus	2019
Document Fiscal Period Focus	Q3
Current Fiscal Year End Date	--12-31
Entity Registrant Name	DUKE REALTY LIMITED PARTNERSHIP
Entity Central Index Key	0001003410
Entity Current Reporting Status	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2019	Dec. 31, 2018
Document Period End Date	Sep. 30, 2019
ASSETS
Real Estate Assets	$ 7,691,643	$ 7,248,346
Construction in progress	469,218	477,162
Investments in and advances to unconsolidated joint ventures	110,815	110,795
Undeveloped land	307,973	360,816
Real estate investment property, at cost, total	8,579,649	8,197,119
Accumulated depreciation	(1,427,180)	(1,344,176)
Net real estate investments	7,152,469	6,852,943
Real estate investments and other assets held-for-sale	23,739	1,082
Cash and cash equivalents	121,233	17,901
Accounts receivable	20,449	14,254
Straight-line rent receivable	123,689	109,334
Receivables on construction contracts, including retentions	24,186	41,215
Deferred leasing and other costs, net of accumulated amortization	315,579	313,799
Restricted cash held in escrow for like kind exchange	119,240	0
Notes receivable from property sales	127,550	272,550
Other escrow deposits and other assets	234,820	180,946
Total Assets	8,262,954	7,804,024
LIABILITIES AND EQUITY
Secured debt, net of deferred financing costs	34,896	79,563
Unsecured debt, net of deferred financing costs	2,732,686	2,548,938
Unsecured line of credit	0	30,000
Long-term debt, total	2,767,582	2,658,501
Liabilities related to real estate investments held-for-sale	2,515	0
Construction payables and amounts due subcontractors, including retentions	70,310	92,288
Accrued real estate taxes	85,684	73,358
Accrued interest	28,680	16,153
Other liabilities	242,744	205,433
Tenant security deposits and prepaid rents	44,167	45,048
Total Liabilities	3,241,682	3,090,781
Equity
Common shares	3,663	3,589
Additional paid-in capital	5,472,510	5,244,375
Accumulated Other Comprehensive Loss	(42,104)	(4,676)
Distributions in excess of net income	(476,136)	(585,087)
Total shareholders' equity	4,957,933	4,658,201
Noncontrolling interests	63,339	55,042
Total Equity	5,021,272	4,713,243
Total Liabilities and Equity	$ 8,262,954	7,804,024
Duke Realty Limited Partnership [Member]
Document Period End Date	Sep. 30, 2019
ASSETS
Real Estate Assets	$ 7,691,643	7,248,346
Construction in progress	469,218	477,162
Investments in and advances to unconsolidated joint ventures	110,815	110,795
Undeveloped land	307,973	360,816
Real estate investment property, at cost, total	8,579,649	8,197,119
Accumulated depreciation	(1,427,180)	(1,344,176)
Net real estate investments	7,152,469	6,852,943
Real estate investments and other assets held-for-sale	23,739	1,082
Cash and cash equivalents	121,233	17,901
Accounts receivable	20,449	14,254
Straight-line rent receivable	123,689	109,334
Receivables on construction contracts, including retentions	24,186	41,215
Deferred leasing and other costs, net of accumulated amortization	315,579	313,799
Restricted cash held in escrow for like kind exchange	119,240	0
Notes receivable from property sales	127,550	272,550
Other escrow deposits and other assets	234,820	180,946
Total Assets	8,262,954	7,804,024
LIABILITIES AND EQUITY
Secured debt, net of deferred financing costs	34,896	79,563
Unsecured debt, net of deferred financing costs	2,732,686	2,548,938
Unsecured line of credit	0	30,000
Long-term debt, total	2,767,582	2,658,501
Liabilities related to real estate investments held-for-sale	2,515	0
Construction payables and amounts due subcontractors, including retentions	70,310	92,288
Accrued real estate taxes	85,684	73,358
Accrued interest	28,680	16,153
Other liabilities	242,744	205,433
Tenant security deposits and prepaid rents	44,167	45,048
Total Liabilities	3,241,682	3,090,781
Equity
Common equity	5,000,037	4,662,877
Limited Partners' common equity	58,736	50,585
Accumulated Other Comprehensive Loss	(42,104)	(4,676)
Total partners' equity	5,016,669	4,708,786
Noncontrolling interests	4,603	4,457
Total Equity	5,021,272	4,713,243
Total Liabilities and Equity	$ 8,262,954	$ 7,804,024

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Deferred leasing and other costs, accumulated amortization	$ 196,817	$ 200,744
Debt Issuance Costs, Net	$ 17,489	$ 26,300
Common shares, par value	$ 0.01	$ 0.01
Common shares, shares authorized	600,000,000	600,000,000
Common shares, shares issued	366,295,000	358,851,000
Common shares, shares outstanding	366,295,000	358,851,000
Duke Realty Limited Partnership [Member]
Deferred leasing and other costs, accumulated amortization	$ 196,817	$ 200,744
Common equity, General Partner Units issued	366,295,000	358,851,000
Common equity, General Partner Units outstanding	366,295,000	358,851,000
Limited Partner Units issued	3,141,000	2,920,000
Limited Partner Units outstanding	3,141,000	2,920,000
Secured Debt [Member]
Debt Issuance Costs, Net	$ 175	$ 238
Secured Debt [Member] | Duke Realty Limited Partnership [Member]
Debt Issuance Costs, Net	175	238
Unsecured Debt [Member]
Debt Issuance Costs, Net	17,314	26,062
Unsecured Debt [Member] | Duke Realty Limited Partnership [Member]
Debt Issuance Costs, Net	$ 17,314	$ 26,062

Consolidated Statements of Oper

Consolidated Statements of Operations and Comprehensive Income - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Revenues:
Rental and related revenue	$ 215,374	$ 196,912	$ 638,446	$ 582,461
General contractor and service fee revenue	25,955	34,986	104,838	94,552
Revenues, total	241,329	231,898	743,284	677,013
Expenses:
Rental expenses	19,158	17,268	57,423	53,558
Real estate taxes	31,739	31,515	96,556	93,857
General contractor and other services expenses	23,640	33,730	99,415	89,392
Depreciation and amortization	83,924	78,855	242,920	232,216
Costs and expenses, total	158,461	161,368	496,314	469,023
Other operating activities:
Equity in earnings of unconsolidated joint ventures	3,736	5,552	12,594	15,521
Gain on sale of properties	173,646	(107)	204,075	194,741
Gain on land sales	3,869	3,915	6,569	7,221
Other operating expenses	(874)	(1,104)	(4,515)	(3,902)
Non-incremental costs related to successful leases	(1,123)	0	(6,726)	0
General and administrative expenses	(13,720)	(8,959)	(49,123)	(43,441)
Other Operating Activities, Net	165,534	(703)	162,874	170,140
Operating income	248,402	69,827	409,844	378,130
Other income (expenses):
Interest and other income, net	2,085	4,129	7,377	13,319
Interest expense	(22,604)	(21,462)	(68,246)	(62,137)
Loss on debt extinguishment	0	(89)	(13)	(240)
Gain on involuntary conversion	0	0	2,259	0
Income from continuing operations before income taxes	227,883	52,405	351,221	329,072
Income tax benefit (expense)	536	897	(6,465)	(9,495)
Income from continuing operations	228,419	53,302	344,756	319,577
Discontinued operations:
Income before gain on sales and income tax	0	85	0	108
Gain on sale of properties	112	136	366	3,157
Income from discontinued operations	112	221	366	3,265
Net income	228,531	53,523	345,122	322,842
Net income attributable to noncontrolling interests	(1,965)	(498)	(2,952)	(3,009)
Net income attributable to common shareholders	$ 226,566	$ 53,025	$ 342,170	$ 319,833
Basic net income per common share/unit:
Continuing operations attributable to common shareholders/unitholders	$ 0.62	$ 0.15	$ 0.95	$ 0.88
Income (Loss) from Discontinued Operations and Disposal of Discontinued Operations, Net of Tax, Per Basic Share	0	0	0	0.01
Earnings Per Share, Basic	0.62	0.15	0.95	0.89
Diluted net income per common share/unit:
Continuing operations attributable to common shareholders/unitholders	0.62	0.15	0.94	0.88
Income (Loss) from Discontinued Operations and Disposal of Discontinued Operations, Net of Tax, Per Diluted Share	0	0	0	0.01
Earnings Per Share, Diluted	$ 0.62	$ 0.15	$ 0.94	$ 0.89
Weighted average number of common shares/units outstanding	362,416	357,898	360,424	357,235
Weighted average number of common shares/units and potential dilutive securities	367,271	361,410	365,343	362,745
Comprehensive income:
Net income	$ 228,531	$ 53,523	$ 345,122	$ 322,842
Other comprehensive loss:
Unrealized losses on interest rate swap contracts	(13,387)	0	(37,428)	0
Comprehensive income	215,144	53,523	307,694	322,842
Duke Realty Limited Partnership [Member]
Revenues:
Rental and related revenue	215,374	196,912	638,446	582,461
General contractor and service fee revenue	25,955	34,986	104,838	94,552
Revenues, total	241,329	231,898	743,284	677,013
Expenses:
Rental expenses	19,158	17,268	57,423	53,558
Real estate taxes	31,739	31,515	96,556	93,857
General contractor and other services expenses	23,640	33,730	99,415	89,392
Depreciation and amortization	83,924	78,855	242,920	232,216
Costs and expenses, total	158,461	161,368	496,314	469,023
Other operating activities:
Equity in earnings of unconsolidated joint ventures	3,736	5,552	12,594	15,521
Gain on sale of properties	173,646	(107)	204,075	194,741
Gain on land sales	3,869	3,915	6,569	7,221
Other operating expenses	(874)	(1,104)	(4,515)	(3,902)
Non-incremental costs related to successful leases	(1,123)	0	(6,726)	0
General and administrative expenses	(13,720)	(8,959)	(49,123)	(43,441)
Other Operating Activities, Net	165,534	(703)	162,874	170,140
Operating income	248,402	69,827	409,844	378,130
Other income (expenses):
Interest and other income, net	2,085	4,129	7,377	13,319
Interest expense	(22,604)	(21,462)	(68,246)	(62,137)
Loss on debt extinguishment	0	(89)	(13)	(240)
Gain on involuntary conversion	0	0	2,259	0
Income from continuing operations before income taxes	227,883	52,405	351,221	329,072
Income tax benefit (expense)	536	897	(6,465)	(9,495)
Income from continuing operations	228,419	53,302	344,756	319,577
Discontinued operations:
Income before gain on sales and income tax	0	85	0	108
Gain on sale of properties	112	136	366	3,157
Income from discontinued operations	112	221	366	3,265
Net income	228,531	53,523	345,122	322,842
Net loss (income) attributable to noncontrolling interests	3	(3)	19	(7)
Net income attributable to common shareholders	$ 228,534	$ 53,520	$ 345,141	$ 322,835
Basic net income per common share/unit:
Continuing operations attributable to common shareholders/unitholders	$ 0.62	$ 0.15	$ 0.95	$ 0.88
Income (Loss) from Discontinued Operations and Disposal of Discontinued Operations, Net of Tax, Per Basic Share	0	0	0	0.01
Earnings Per Share, Basic	0.62	0.15	0.95	0.89
Diluted net income per common share/unit:
Continuing operations attributable to common shareholders/unitholders	0.62	0.15	0.94	0.88
Income (Loss) from Discontinued Operations and Disposal of Discontinued Operations, Net of Tax, Per Diluted Share	0	0	0	0.01
Earnings Per Share, Diluted	$ 0.62	$ 0.15	$ 0.94	$ 0.89
Weighted average number of common shares/units outstanding	365,558	361,200	363,542	360,585
Weighted average number of common shares/units and potential dilutive securities	367,271	361,410	365,343	362,745
Comprehensive income:
Net income	$ 228,531	$ 53,523	$ 345,122	$ 322,842
Other comprehensive loss:
Unrealized losses on interest rate swap contracts	(13,387)	0	(37,428)	0
Comprehensive income	$ 215,144	$ 53,523	$ 307,694	$ 322,842

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018
Cash flows from operating activities:
Net income	$ 345,122	$ 322,842
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation of buildings and tenant improvements	202,261	190,460
Amortization of deferred leasing and other costs	40,659	41,756
Amortization of deferred financing costs	4,606	4,303
Straight-line rental income and expense, net	(15,627)	(16,763)
Loss on debt extinguishment	13	240
Gain on involuntary conversion	(2,259)	0
Gains on land and depreciated property sales	(211,010)	(205,119)
Third-party construction contracts, net	14,218	(5,088)
Other accrued revenues and expenses, net	26,870	43,627
Equity in earnings in excess of operating distributions received from unconsolidated joint ventures	(766)	(4,609)
Net cash provided by operating activities	404,087	371,649
Cash flows from investing activities:
Development of real estate investments	(325,825)	(459,513)
Acquisition of real estate investments and related intangible assets	(146,632)	(208,914)
Acquisition of undeveloped land	(223,547)	(194,171)
Second generation tenant improvements, leasing costs and building improvements	(31,644)	(34,311)
Other deferred leasing costs	(28,551)	(27,691)
Other assets	(9,104)	(5,929)
Proceeds from the repayments of notes receivable from property sales	145,000	149,913
Proceeds from land and depreciated property sales, net	379,774	434,584
Capital distributions from unconsolidated joint ventures	2,664	19,176
Capital contributions and advances to unconsolidated joint ventures	(5,963)	(2,728)
Net cash used for investing activities	(243,828)	(329,584)
Cash flows from financing activities:
Proceeds from issuance of common shares, net	222,672	30,591
Proceeds from unsecured debt	182,284	450,000
Payments on unsecured debt	0	(1,998)
Payments on secured indebtedness including principal amortization	(44,652)	(231,070)
Repayments on line of credit, net	(30,000)	0
Distributions to common shareholders/unitholders	(232,323)	(214,463)
Distributions to noncontrolling Interest	(1,864)	(1,746)
Tax payments on stock-based compensation awards	(5,695)	(8,389)
Change in book cash overdrafts	(14,306)	22,669
Other Financing Activities	(9,920)	0
Deferred financing costs	(1,440)	(8,485)
Net cash provided by financing activities	64,756	37,109
Net increase in cash, cash equivalents and restricted cash	225,015	79,174
Cash, cash equivalents and restricted cash at beginning of period	25,517	193,627
Cash, cash equivalents and restricted cash at end of period	250,532	272,801
Noncash activities:
Liabilities and right-of-use assets - operating leases	38,826	0
Investment and Advances Related to Acquisition of Previously Unconsolidated Companies	0	5,034
Contribution of Property	0	3,200
Conversion of Units - NonCash Disclosure	0	1,967
Duke Realty Limited Partnership [Member]
Cash flows from operating activities:
Net income	345,122	322,842
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation of buildings and tenant improvements	202,261	190,460
Amortization of deferred leasing and other costs	40,659	41,756
Amortization of deferred financing costs	4,606	4,303
Straight-line rental income and expense, net	(15,627)	(16,763)
Loss on debt extinguishment	13	240
Gain on involuntary conversion	(2,259)	0
Gains on land and depreciated property sales	(211,010)	(205,119)
Third-party construction contracts, net	14,218	(5,088)
Other accrued revenues and expenses, net	26,870	43,627
Equity in earnings in excess of operating distributions received from unconsolidated joint ventures	(766)	(4,609)
Net cash provided by operating activities	404,087	371,649
Cash flows from investing activities:
Development of real estate investments	(325,825)	(459,513)
Acquisition of real estate investments and related intangible assets	(146,632)	(208,914)
Acquisition of undeveloped land	(223,547)	(194,171)
Second generation tenant improvements, leasing costs and building improvements	(31,644)	(34,311)
Other deferred leasing costs	(28,551)	(27,691)
Other assets	(9,104)	(5,929)
Proceeds from the repayments of notes receivable from property sales	145,000	149,913
Proceeds from land and depreciated property sales, net	379,774	434,584
Capital distributions from unconsolidated joint ventures	2,664	19,176
Capital contributions and advances to unconsolidated joint ventures	(5,963)	(2,728)
Net cash used for investing activities	(243,828)	(329,584)
Cash flows from financing activities:
Proceeds from unsecured debt	182,284	450,000
Contributions from the General Partner	222,672	30,591
Payments on unsecured debt	0	(1,998)
Payments on secured indebtedness including principal amortization	(44,652)	(231,070)
Repayments on line of credit, net	(30,000)	0
Distributions to common shareholders/unitholders	(234,352)	(216,484)
Distributions to noncontrolling Interest	165	275
Tax payments on stock-based compensation awards	(5,695)	(8,389)
Change in book cash overdrafts	(14,306)	22,669
Other Financing Activities	(9,920)	0
Deferred financing costs	(1,440)	(8,485)
Net cash provided by financing activities	64,756	37,109
Net increase in cash, cash equivalents and restricted cash	225,015	79,174
Cash, cash equivalents and restricted cash at beginning of period	25,517	193,627
Cash, cash equivalents and restricted cash at end of period	250,532	272,801
Noncash activities:
Liabilities and right-of-use assets - operating leases	38,826	0
Investment and Advances Related to Acquisition of Previously Unconsolidated Companies	0	5,034
Contribution of Property	0	3,200
Conversion of Units - NonCash Disclosure	$ 0	$ 1,967

Consolidated Statement of Chang

Consolidated Statement of Changes in Equity - USD ($) $ in Thousands	Total	Common Stock [Member]	Additional Paid-in Capital [Member]	AOCI Attributable to Parent [Member]	Distributions in Excess of Net Income [Member]	Non-controlling Interest [Member]	Duke Realty Limited Partnership [Member]	Duke Realty Limited Partnership [Member]Common Stock [Member]	Duke Realty Limited Partnership [Member]Limited Partners' Common Equity [Member]	Duke Realty Limited Partnership [Member]AOCI Attributable to Parent [Member]	Duke Realty Limited Partnership [Member]Non-controlling Interest [Member]	Duke Realty Limited Partnership [Member]Stockholders' Equity, Total [Member]
Beginning Balance - General Partner at Dec. 31, 2017	$ 4,574,378	$ 3,564	$ 5,205,316		$ (676,036)	$ 41,534
Beginning Balance - Partnership at Dec. 31, 2017							$ 4,574,378	$ 4,532,844	$ 40,563		$ 971	$ 4,573,407
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income	322,842				319,833	3,009	322,842	319,833	3,002		7	322,835
Issuance of common shares	30,591	11	30,580
Capital contribution from the General Partner							30,591	30,591				30,591
Stock based compensation plan activity	10,122	7	2,633		(951)	8,433	10,122	1,689	8,433			10,122
Conversion of Limited Partner Units	0	1	1,966			(1,967)	0	1,967	(1,967)
Noncontrolling Interest, Increase from Subsidiary Equity Issuance	3,475					3,475	3,475				3,475
Distributions to Partners							(216,484)	(214,463)	(2,021)			(216,484)
Distributions to common shareholders	(214,463)				(214,463)
Distributions to noncontrolling interests	(2,021)					(2,021)
Ending Balance - General Partner at Sep. 30, 2018	4,724,924	3,583	5,240,495		(571,617)	52,463
Ending Balance - Partnership at Sep. 30, 2018							4,724,924	4,672,461	48,010		4,453	4,720,471
Beginning Balance - General Partner at Jun. 30, 2018	4,708,970	3,572	5,209,605		(552,685)	48,478
Beginning Balance - Partnership at Jun. 30, 2018							4,708,970	4,660,492	47,503		975	4,707,995
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income	53,523				53,025	498	53,523	53,025	495		3	53,520
Issuance of common shares	29,215	10	29,205
Capital contribution from the General Partner							29,215	29,215				29,215
Stock based compensation plan activity	2,057	1	1,656		(301)	701	2,057	1,356	701			2,057
Conversion of Limited Partner Units	0	0	29			(29)	0	29	(29)
Noncontrolling Interest, Increase from Subsidiary Equity Issuance	3,475					3,475	3,475				3,475
Distributions to Partners							(72,316)	(71,656)	(660)			(72,316)
Distributions to common shareholders	(71,656)				(71,656)
Distributions to noncontrolling interests	(660)					(660)
Ending Balance - General Partner at Sep. 30, 2018	4,724,924	3,583	5,240,495		(571,617)	52,463
Ending Balance - Partnership at Sep. 30, 2018							4,724,924	4,672,461	48,010		4,453	4,720,471
Beginning Balance - General Partner at Dec. 31, 2018	4,713,243	3,589	5,244,375	$ (4,676)	(585,087)	55,042
Beginning Balance - Partnership at Dec. 31, 2018							4,713,243	4,662,877	50,585	$ (4,676)	4,457	4,708,786
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income	345,122				342,170	2,952	345,122	342,170	2,971		(19)	345,141
Other Comprehensive Income (Loss), Net of Tax	(37,428)			(37,428)			(37,428)			(37,428)		(37,428)
Issuance of common shares	222,672	68	222,604
Capital contribution from the General Partner							222,672	222,672				222,672
Stock based compensation plan activity	11,850	6	5,531		(896)	7,209	11,850	4,641	7,209			11,850
Noncontrolling Interest, Increase from Subsidiary Equity Issuance	312					312	312				312
Distributions to Partners							(234,352)	(232,323)	(2,029)			(234,352)
Distributions to common shareholders	(232,323)				(232,323)
Distributions to noncontrolling interests	(2,176)					(2,176)	(147)				(147)
Ending Balance - General Partner at Sep. 30, 2019	5,021,272	3,663	5,472,510	(42,104)	(476,136)	63,339
Ending Balance - Partnership at Sep. 30, 2019							5,021,272	5,000,037	58,736	(42,104)	4,603	5,016,669
Beginning Balance - General Partner at Jun. 30, 2019	4,702,121	3,606	5,290,382	(28,717)	(624,674)	61,524
Beginning Balance - Partnership at Jun. 30, 2019							4,702,121	4,669,314	56,910	(28,717)	4,614	4,697,507
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income	228,531				226,566	1,965	228,531	226,566	1,968		(3)	228,534
Other Comprehensive Income (Loss), Net of Tax	(13,387)			(13,387)			(13,387)			(13,387)		(13,387)
Issuance of common shares	180,544	55	180,489
Capital contribution from the General Partner							180,544	180,544				180,544
Stock based compensation plan activity	1,920	2	1,639		(255)	534	1,920	1,386	534			1,920
Noncontrolling Interest, Increase from Subsidiary Equity Issuance							8
Distributions to Partners							(78,449)	(77,773)	(676)			(78,449)
Distributions to common shareholders	(77,773)				(77,773)
Distributions to noncontrolling interests	(684)					(684)					(8)
Ending Balance - General Partner at Sep. 30, 2019	$ 5,021,272	$ 3,663	$ 5,472,510	$ (42,104)	$ (476,136)	$ 63,339
Ending Balance - Partnership at Sep. 30, 2019							$ 5,021,272	$ 5,000,037	$ 58,736	$ (42,104)	$ 4,603	$ 5,016,669

Consolidated Statement of Cha_2

Consolidated Statement of Changes in Equity (Parenthetical) - $ / shares	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Distributions to common shareholders, per share	$ 0.215	$ 0.20	$ 0.645	$ 0.600
Duke Realty Limited Partnership [Member]
Distributions to Partners, per Common Unit	$ 0.215	$ 0.20	$ 0.645	$ 0.600

General Basis of Presentation (

General Basis of Presentation (Notes)	9 Months Ended
	Sep. 30, 2019
Organization, Consolidation and Presentation of Financial Statements [Abstract]
General Basis of Presentation	General Basis of Presentation The interim consolidated financial statements included herein have been prepared by the General Partner and the Partnership. The 2018 year-end consolidated balance sheet data included in this Report was derived from the audited financial statements in the combined Annual Report on Form 10-K of the General Partner and the Partnership for the year ended December 31, 2018 (the " 2018 Annual Report"), but does not include all disclosures required by accounting principles generally accepted in the United States of America ("GAAP"). The financial statements have been prepared in accordance with GAAP for interim financial information and in accordance with Rule 10-01 of Regulation S-X of the Securities Exchange Act of 1934, as amended. Accordingly, they do not include all of the information and footnotes required by GAAP for complete financial statements. In the opinion of management, all adjustments (consisting of normal recurring adjustments) considered necessary for a fair presentation have been included. GAAP requires us to make estimates and assumptions that affect the reported amounts of assets and liabilities and revenue and expenses during the reporting period. Our actual results could differ from those estimates and assumptions. These financial statements should be read in conjunction with Management's Discussion and Analysis of Financial Condition and Results of Operations included herein and the consolidated financial statements and notes thereto included in the 2018 Annual Report. The General Partner was formed in 1985, and we believe that it qualifies as a REIT under the provisions of the Internal Revenue Code of 1986, as amended (the "Code"). The Partnership was formed on October 4, 1993, when the General Partner contributed all of its properties and related assets and liabilities, together with the net proceeds from an offering of additional shares of its common stock, to the Partnership. Simultaneously, the Partnership completed the acquisition of Duke Associates, a full-service commercial real estate firm operating in the Midwest whose operations began in 1972. The General Partner is the sole general partner of the Partnership, owning approximately 99.1% of the Common Units at September 30, 2019 . The remaining 0.9% of the Common Units are owned by limited partners. As the sole general partner of the Partnership, the General Partner has full, exclusive and complete responsibility and discretion in the day-to-day management and control of the Partnership. The General Partner and the Partnership are operated as one enterprise. The management of the General Partner consists of the same members as the management of the Partnership. As the sole general partner with control of the Partnership, the General Partner consolidates the Partnership for financial reporting purposes, and the General Partner does not have any significant assets other than its investment in the Partnership. Therefore, the assets and liabilities of the General Partner and the Partnership are substantially the same. Limited partners have the right to redeem their Limited Partner Units, subject to certain restrictions. Pursuant to the Fifth Amended and Restated Agreement of Limited Partnership, as amended (the "Partnership Agreement"), the General Partner is obligated to redeem the Limited Partner Units in shares of its common stock, unless it determines in its reasonable discretion that the issuance of shares of its common stock could cause it to fail to qualify as a REIT. Each Limited Partner Unit shall be redeemed for one share of the General Partner's common stock, or, in the event that the issuance of shares could cause the General Partner to fail to qualify as a REIT, cash equal to the fair market value of one share of the General Partner's common stock at the time of redemption, in each case, subject to certain adjustments described in the Partnership Agreement. The Limited Partner Units are not required, per the terms of the Partnership Agreement, to be redeemed in registered shares of the General Partner. As of September 30, 2019

New Accounting Pronouncements (

New Accounting Pronouncements (Notes)	9 Months Ended
	Sep. 30, 2019
New Accounting Pronouncements and Changes in Accounting Principles [Abstract]
New Accounting Pronouncements, Policy [Policy Text Block]	New Accounting Pronouncements Recently Adopted Accounting Pronouncements Leases On January 1, 2019, we adopted Accounting Standards Codification ("ASC") 842, Leases ("ASC 842"), utilizing the available election to adopt on a prospective basis. ASC 842 has superseded all previous GAAP guidance for accounting for leases. As part of adoption, we elected the package of practical expedients available for implementation, which included: (i) relief from re-assessing whether an expired or existing contract meets the definition of a lease, (ii) relief from re-assessing the classification of expired or existing leases at the adoption date and (iii) allowing previously capitalized initial direct leasing costs to continue to be amortized. Due in large part to electing these practical expedients, the adoption of ASC 842 did not result in recording a cumulative adjustment to the opening balance of distributions in excess of net income. Lessor Accounting Our primary business is the development, acquisition, and operation of industrial real estate properties that are held for investment and leased to tenants. Due to electing the package of practical expedients that allow for relief from re-assessing the classification of existing leases at the adoption date, as well as based on the characteristics of our underlying assets and leases, all of our leases are classified as operating leases. We manage residual risk through investing in properties that we believe will appreciate in value over time. We also perform a credit analysis for tenants prior to leases being executed, and on an ongoing basis, to ensure collectability is probable prior to recognizing lease revenues on an accrual basis. For lessors, the accounting under ASC 842 remains largely unchanged with the notable exception that ASC 842 requires that lessors expense certain initial direct costs, which were capitalizable under prior leasing standards, as incurred. Under the new standard, only the incremental costs of signing a lease are capitalizable. As the result of this change, we recognized $1.1 million and $6.7 million of expense for internal costs related to successful leases for the three and nine months ended September 30, 2019 , respectively, presented separately in the line item "Non-Incremental Costs Related to Successful Leases" on the Consolidated Statements of Operations and Comprehensive Income, which previously would have been capitalized. For the three and nine months ended September 30, 2018 , we capitalized $852,000 and $9.2 million , respectively, of internal lease related costs which would have been expensed had ASC 842 been effective. ASC 842 also requires lessors to exclude certain lessor costs, such as real estate taxes and insurance, that are paid directly by lessees to third parties from rental revenue and the associated rental expense. Lessor costs that are paid by the lessor and reimbursed by the lessee continue to be recorded through rental revenue and the associated rental expense. ASC 842 provides lessors an additional practical expedient to not separate rental recovery revenue related to lease-related services from the associated rental revenue related to the lease when certain criteria are met. The lease-related services provided to our tenants include property management, common area maintenance ("CAM") and utilities. We assessed the applicable criteria, concluding that the timing and straight-line pattern of transfer to the lessees for rental recovery revenue from our lease-related services and revenue from the underlying leases are the same and that lease classification does not change, and elected to apply this additional practical expedient. Our leases generally include scheduled rent increases, but do not include variable payments based on indexes. Our rental revenue is primarily based on fixed, non-cancelable leases. Our variable rental revenue primarily consists of amounts recovered from lessees for property tax, insurance and CAM. All revenues related to lease and lease-related services are included in, and comprise substantially all of, the caption "Rental and Related Revenue" on the Consolidated Statements of Operations and Comprehensive Income. The components of Rental and Related Revenue are as follows (in thousands): Three Months Ended September 30, 2019 Nine Months Ended September 30, 2019 Rental revenue - fixed payments $ 163,516 $ 481,674 Rental revenue - variable payments (1) 51,858 156,772 Rental and related revenue $ 215,374 $ 638,446 (1) Primarily includes tenant recoveries for real estate taxes, insurance and CAM. The future minimum rents due to us under non-cancelable operating leases are as follows (in thousands): Year September 30, 2019 December 31, 2018 2019 $ 153,301 $ 600,385 2020 623,291 586,609 2021 600,850 529,961 2022 537,556 463,462 2023 466,514 397,150 Thereafter 2,058,372 1,582,598 $ 4,439,884 $ 4,160,165 Lessee Accounting ASC 842 requires lessees to apply a dual approach, classifying leases as either finance or operating leases based on the principle of whether or not the lease is effectively a financed purchase of the leased asset by the lessee. This classification determines whether the lease expense is recognized based on an effective interest method or on a straight-line basis over the term of the lease. A lessee is also required to record a right-of-use ("ROU") asset and a lease liability for all leases with a term of greater than 12 months regardless of classification. As of September 30, 2019 , our lease arrangements primarily consisted of office and ground leases. Adoption of the practical expedients resulted in the continued classification of our leases as operating leases. Expense recognized on these leases for the nine months ended September 30, 2019 was not material. For these arrangements, we recognized a ROU asset and a corresponding lease liability at the January 1, 2019 adoption date of ASC 842, representing the discounted value of future lease payments required under our lease arrangements. A $38.8 million ROU asset, net of pre-existing lease related accruals, was included in Other Escrow Deposits and Other Assets, and a corresponding lease liability of $45.0 million was included in Other Liabilities on our Consolidated Balance Sheets as of September 30, 2019 . In determining these amounts we elected an available practical expedient that allows us, as a lessee, to not separate lease and non-lease components. The following table summarizes the future operating lease payments (in thousands) to be made under our non-cancellable lease arrangements: Year September 30, 2019 December 31, 2018 2019 $ 1,521 $ 6,487 2020 8,037 7,594 2021 3,595 2,987 2022 2,877 2,255 2023 2,585 1,949 Thereafter 86,040 85,523 Total undiscounted operating lease payments $ 104,655 $ 106,795 Less: imputed interest (59,634 ) Present value of operating lease payments $ 45,021 The weighted average remaining lease term for our lease arrangements, on a combined basis as of September 30, 2019 , was 32.5 years. The weighted average discount rate for our lease arrangements as of September 30, 2019 was 4.55% . As the discount rates implied in our lease arrangements are not readily determinable, we utilized our current credit ratings and credit yields observed from market traded securities with similar credit ratings to form a reasonable basis to establish secured borrowing rates when determining the present value of future lease payments.

Reclassifications

Reclassifications	9 Months Ended
	Sep. 30, 2019
Disclosure Text Block [Abstract]
Reclassifications	Reclassifications Certain amounts in the accompanying consolidated financial statements for 2018 have been reclassified to conform to the 2019 consolidated financial statement presentation.

Restricted Cash (Notes)

Restricted Cash (Notes)	9 Months Ended
	Sep. 30, 2019
Restricted Cash [Abstract]
Cash and Cash Equivalents Disclosure [Text Block]	Restricted Cash In November 2016, the FASB issued ASU 2016-18, Statement of Cash Flows: Restricted Cash ("ASU 2016-18"). ASU 2016-18 requires entities to show the changes in the total of cash, cash equivalents and restricted cash in the statement of cash flows. As a result, entities will no longer present transfers between cash, cash equivalents and restricted cash in the statement of cash flows. We adopted this standard on January 1, 2018, on a retrospective basis, and the adoption did not have a material impact on our consolidated financial statements. The following table provides a reconciliation of cash, cash equivalents, and restricted cash reported within the Consolidated Balance Sheets that sum to the total of the same such amounts shown in the Consolidated Statements of Cash Flows (in thousands): September 30, 2019 December 31, 2018 Cash and cash equivalents $ 121,233 $ 17,901 Restricted cash held in escrow for like-kind exchange 119,240 — Restricted cash included in other escrow deposits and other assets 10,059 7,616 Total cash, cash equivalents, and restricted cash shown in the Consolidated Statements of Cash Flows $ 250,532 $ 25,517 Restricted cash held in escrow for like-kind exchange on the Consolidated Balance Sheets includes cash received from the property dispositions but restricted only for qualifying like-kind exchange transactions.

Variable Interest Entities

Variable Interest Entities	9 Months Ended
	Sep. 30, 2019
Disclosure Text Block [Abstract]
Consolidation Policy for VIEs	Variable Interest Entities Partnership Due to the fact that the Limited Partners do not have kick out rights, or substantive participating rights, the Partnership is a variable interest entity ("VIE"). Because the General Partner holds majority ownership and exercises control over every aspect of the Partnership's operations, the General Partner has been determined as the primary beneficiary and, therefore, consolidates the Partnership. The assets and liabilities of the General Partner and the Partnership are substantially the same, as the General Partner does not have any significant assets other than its investment in the Partnership. All of the Company's debt is an obligation of the Partnership. Joint Ventures We have equity interests in unconsolidated joint ventures that primarily own and operate rental properties or hold land for development. We consolidate those joint ventures that are considered to be VIEs where we are the primary beneficiary. We analyze our investments in joint ventures to determine if the joint venture is considered a VIE and would require consolidation. We (i) evaluate the sufficiency of the total equity investment at risk, (ii) review the voting rights and decision-making authority of the equity investment holders as a group and whether there are limited partners (or similar owning entities) that lack substantive participating or kick out rights and (iii) establish whether or not activities within the venture are on behalf of an investor with disproportionately few voting rights in making this VIE determination. To the extent that we own interests in a VIE and we (i) are the sole entity that has the power to direct the activities of the VIE and (ii) have the obligation or rights to absorb the VIE's losses or receive its benefits, then we would be determined to be the primary beneficiary and would consolidate the VIE. To the extent we own interests in a VIE, then at each reporting period, we re-assess our conclusions as to which, if any, party within the VIE is considered the primary beneficiary. Consolidated joint ventures that are VIEs are not significant in any period presented in these consolidated financial statements. To the extent that our joint ventures do not qualify as VIEs, they are consolidated if we control them through majority ownership interests or if we are the managing entity (general partner or managing member) and the other partner does not have substantive participating rights. Control is further demonstrated by our ability to unilaterally make significant operating decisions, refinance debt and sell the assets of the joint venture without the consent of the non-managing entity and the inability of the non-managing entity to remove us from our role as the managing entity. Consolidated joint ventures that are not VIEs are not significant in any period presented in these consolidated financial statements. There were no unconsolidated joint ventures, in which we have any recognized assets or liabilities or have retained any economic exposure to loss at September 30, 2019 , that met the criteria to be considered VIEs. Our maximum loss exposure for guarantees of unconsolidated joint venture indebtedness, none of which relate to VIEs, totaled $160.1 million at September 30, 2019 .

Acquisitions and Dispositions

Acquisitions and Dispositions	9 Months Ended
	Sep. 30, 2019
Real Estate [Abstract]
Acquisitions and Dispositions	Acquisitions and Dispositions Acquisitions and dispositions for the periods presented were completed in accordance with our strategy to reposition our investment concentration among the markets in which we operate and to increase our overall investments in quality industrial projects. Transaction costs related to asset acquisitions are capitalized and transaction costs related to business combinations and dispositions are expensed. Acquisitions We paid cash of $146.6 million and $208.9 million for asset acquisitions during the nine months ended September 30, 2019 and 2018 , respectively. We acquired four properties during the nine months ended September 30, 2019 . We determined that these four properties did not meet the definition of a business and, accordingly, we accounted for them as asset acquisitions as opposed to business combinations. The following table summarizes amounts recognized for each major class of assets (in thousands) for these acquisitions during the nine months ended September 30, 2019 : Real estate assets $ 140,030 Lease related intangible assets 9,331 Fair value of acquired net assets $ 149,361 The leases in the acquired properties had a weighted average remaining life at acquisition of approximately 6.3 years. Fair Value Measurements We determine the fair value of the individual components of real estate asset acquisitions primarily through calculating the "as-if vacant" value of a building, using an income approach, which relies significantly upon internally determined assumptions. We have determined that these estimates primarily rely upon level 3 inputs, which are unobservable inputs based on our own assumptions. The most significant assumptions used in calculating the "as-if vacant" value for acquisition activity during the nine months ended September 30, 2019 are as follows: Low High Exit capitalization rate 4.23% 5.26% Net rental rate per square foot $5.90 $15.60 Capitalized acquisition costs were insignificant and the fair value of the four properties acquired during the nine months ended September 30, 2019 was substantially the same as the cost of acquisition. Dispositions Dispositions of buildings and undeveloped land generated net cash proceeds of $379.8 million and $434.6 million during the nine months ended September 30, 2019 and 2018 , respectively. In September 2019, we completed the sale of 18 non-strategic industrial properties for $217.5 million in proceeds and recorded a gain on sale of $146.3 million . These properties totaled 4.1 million square feet and were located in primarily Midwest markets. Additionally, during the nine months ended September 30, 2019 , we collected $145.0 million

Indebtedness

Indebtedness	9 Months Ended
	Sep. 30, 2019
Debt Disclosure [Abstract]
Indebtedness	Indebtedness All debt is issued directly or indirectly by the Partnership. The General Partner does not have any indebtedness, but does guarantee some of the unsecured debt of the Partnership. The following table summarizes the book value and changes in the fair value of our debt (in thousands): Book Value at 12/31/2018 Book Value at 9/30/2019 Fair Value at 12/31/2018 Issuances and Assumptions Payments/Payoffs Adjustments to Fair Value Fair Value at 9/30/2019 Fixed rate secured debt $ 77,601 $ 33,171 $ 80,238 $ — $ (44,352 ) $ (163 ) $ 35,723 Variable rate secured debt 2,200 1,900 2,200 — (300 ) — 1,900 Unsecured debt 2,575,000 2,750,000 2,549,963 175,000 — 172,750 2,897,713 Unsecured line of credit 30,000 — 30,000 — (30,000 ) — — Total $ 2,684,801 $ 2,785,071 $ 2,662,401 $ 175,000 $ (74,652 ) $ 172,587 $ 2,935,336 Less: Deferred financing costs 26,300 17,489 Total indebtedness as reported on the consolidated balance sheets $ 2,658,501 $ 2,767,582 Secured Debt Because our fixed rate secured debt is not actively traded in any marketplace, we utilized a discounted cash flow methodology to determine its fair value. Accordingly, we calculated fair value by applying an estimate of the current market rate to discount the debt's remaining contractual cash flows. Our estimate of a current market rate, which is the most significant input in the discounted cash flow calculation, is intended to replicate debt of similar maturity and loan-to-value relationship. The estimated rates ranged from 3.10% to 3.40% , depending on the attributes of the specific loans. The current market rates we utilized were internally estimated; therefore, we have concluded that our determination of fair value for our fixed rate secured debt was primarily based upon level 3 inputs. During the nine months ended September 30, 2019 , we repaid three fixed rate secured loans, totaling $41.7 million , which had a weighted average stated interest rate of 7.76% . Unsecured Debt At September 30, 2019 , all of our unsecured debt bore interest at fixed rates and primarily consisted of unsecured notes that are publicly traded. We utilized broker estimates in estimating the fair value of our fixed rate unsecured debt. Our unsecured notes are thinly traded and, in certain cases, the broker estimates were not based upon comparable transactions. The broker estimates took into account any recent trades within the same series of our fixed rate unsecured debt, comparisons to recent trades of other series of our fixed rate unsecured debt, trades of fixed rate unsecured debt from companies with profiles similar to ours, as well as overall economic conditions. We reviewed these broker estimates for reasonableness and accuracy, considering whether the estimates were based upon market participant assumptions within the principal and most advantageous market and whether any other observable inputs would be more accurate indicators of fair value than the broker estimates. We concluded that the broker estimates were representative of fair value. We have determined that our estimation of the fair value of our fixed rate unsecured debt was primarily based upon level 3 inputs. The estimated trading values of our fixed rate unsecured debt, depending on the maturity and coupon rates, ranged from 102.00% to 131.00% of face value. In August 2019, we issued $175.0 million of senior unsecured notes bearing interest at a stated interest rate of 3.38% and maturing on December 15, 2027, at 104.16% of par value, resulting in an effective interest rate of 2.80% . Proceeds from the unsecured notes offering were primarily used to repay the borrowings under the unsecured line of credit. The notes were issued as additional notes under an indenture pursuant to which we previously issued $300.0 million senior unsecured notes due 2027 in December 2017. These notes have substantially identical terms. The indentures (and related supplemental indentures) governing our outstanding series of unsecured notes also require us to comply with financial ratios and other covenants regarding our operations. We were in compliance with all such financial covenants at September 30, 2019 . Unsecured Line of Credit Our unsecured line of credit at September 30, 2019 is described as follows (in thousands): Description Borrowing Capacity Maturity Date Outstanding Balance at September 30, 2019 Unsecured Line of Credit - Partnership $ 1,200,000 January 30, 2022 $ — The Partnership's unsecured line of credit has an interest rate on borrowings of LIBOR plus 0.875% and has a maturity date of January 30, 2022 , with options to extend until January 30, 2023. Subject to certain conditions, the terms also include an option to increase the facility by up to an additional $800.0 million , for a total of up to $2.00 billion . This line of credit provides us with an option to obtain borrowings from financial institutions that participate in the line at rates that may be lower than the stated interest rate, subject to certain restrictions. This line of credit contains financial covenants that require us to meet certain financial ratios and defined levels of performance, including those related to fixed charge coverage, unsecured interest expense coverage and debt-to-asset value (with asset value being defined in the Partnership's unsecured line of credit agreement). At September 30, 2019 , we were in compliance with all financial covenants under this line of credit. To the extent there are outstanding borrowings, we utilize a discounted cash flow methodology in order to estimate the fair value of outstanding borrowings on our unsecured line of credit. To the extent that credit spreads have changed since the origination of the line of credit, the net present value of the difference between future contractual interest payments and future interest payments based on our estimate of a current market rate would represent the difference between the book value and the fair value. This estimate of a current market rate is based upon the rate, considering current market conditions and our specific credit profile, at which we estimate we could obtain similar borrowings. As our credit spreads have not changed appreciably, we believe that the contractual interest rate and the current market rate on any outstanding borrowings on the line of credit are the same. The current market rate is internally estimated and therefore is primarily based upon a level 3 input.

Shareholder's Equity (Notes)

Shareholder's Equity (Notes)	9 Months Ended
	Sep. 30, 2019
Shareholder's Equity [Abstract]
Stockholders' Equity Note Disclosure [Text Block]	Shareholders' Equity of the General Partner and Partners' Capital of the Partnership General Partner The General Partner has an at the market ("ATM") equity program that allows it to issue and sell its common shares through sales agents from time to time. Actual sales under the ATM equity program depend on a variety of factors to be determined by the General Partner, including, among others, market conditions, the trading price of the General Partner’s common stock, determinations by the General Partner of the appropriate sources of funding and potential uses of funding available. In August 2019, the General Partner terminated its previous equity distribution agreement for the ATM equity program and entered into a new equity distribution agreement to sell shares of its common stock, $0.01 par value per share, from time to time, up to an aggregate offering price of $400.0 million . During the nine months ended September 30, 2019 , the General Partner issued 6.6 million common shares pursuant to its ATM equity programs, generating gross proceeds of $218.1 million and, after deducting commissions and other costs, net proceeds of $215.6 million . The proceeds from these offerings were contributed to the Partnership and used to fund development activities. Partnership For each common share or preferred share that the General Partner issues, the Partnership issues a corresponding General Partner Unit or Preferred Unit, as applicable, to the General Partner in exchange for the contribution of the proceeds from the stock issuance. Similarly, when the General Partner redeems or repurchases common shares or preferred shares, the Partnership redeems the corresponding General Partner Units or Preferred Units held by the General Partner at the same price.

Related Party Transactions

Related Party Transactions	9 Months Ended
	Sep. 30, 2019
Related Party Transactions [Abstract]
Related Party Transactions	Related Party Transactions We provide property management, asset management, leasing, construction and other tenant-related services to unconsolidated joint ventures in which we have equity interests. We recorded the corresponding fees based on contractual terms that approximate market rates for these types of services and have eliminated our ownership percentage of these fees in the consolidated financial statements. The following table summarizes the fees earned from these joint ventures, prior to the elimination of our ownership percentage (in thousands): Three Months Ended September 30, Nine Months Ended September 30, 2019 2018 2019 2018 Management fees $ 452 $ 462 $ 1,318 $ 1,359 Leasing fees 759 430 1,315 1,622 Construction and development fees 582 1,128 4,520 2,804

Net Income (Loss) Per Common Sh

Net Income (Loss) Per Common Share	9 Months Ended
	Sep. 30, 2019
Earnings Per Share [Abstract]
Net Income (Loss) Per Common Share	Net Income per Common Share or Common Unit Basic net income per common share or Common Unit is computed by dividing net income attributable to common shareholders or common unitholders, less dividends or distributions on share-based awards expected to vest (referred to as "participating securities" and primarily composed of unvested restricted stock units), by the weighted average number of common shares or Common Units outstanding for the period. Diluted net income per common share is computed by dividing the sum of net income attributable to common shareholders and the noncontrolling interest in earnings allocable to Limited Partner Units (to the extent the Limited Partner Units are dilutive), less dividends or distributions on participating securities that are anti-dilutive, by the sum of the weighted average number of common shares outstanding and, to the extent they are dilutive, weighted average number of Limited Partner Units outstanding and any potential dilutive securities for the period. Diluted net income per Common Unit is computed by dividing the net income attributable to common unitholders, less dividends or distributions on participating securities that are anti-dilutive, by the sum of the weighted average number of Common Units outstanding and any potential dilutive securities for the period. The following table reconciles the components of basic and diluted net income per common share or Common Unit (in thousands): Three Months Ended September 30, Nine Months Ended September 30, 2019 2018 2019 2018 General Partner Net income attributable to common shareholders $ 226,566 $ 53,025 $ 342,170 $ 319,833 Less: dividends on participating securities (350 ) (394 ) (1,125 ) (1,249 ) Basic net income attributable to common shareholders $ 226,216 $ 52,631 $ 341,045 $ 318,584 Add back dividends on dilutive participating securities 350 — 1,125 1,249 Noncontrolling interest in earnings of common unitholders 1,968 495 2,971 3,002 Diluted net income attributable to common shareholders $ 228,534 $ 53,126 $ 345,141 $ 322,835 Weighted average number of common shares outstanding 362,416 357,898 360,424 357,235 Weighted average Limited Partner Units outstanding 3,142 3,302 3,118 3,350 Other potential dilutive shares 1,713 210 1,801 2,160 Weighted average number of common shares and potential dilutive securities 367,271 361,410 365,343 362,745 Partnership Net income attributable to common unitholders $ 228,534 $ 53,520 $ 345,141 $ 322,835 Less: distributions on participating securities (350 ) (394 ) (1,125 ) (1,249 ) Basic net income attributable to common unitholders $ 228,184 $ 53,126 $ 344,016 $ 321,586 Add back distributions on dilutive participating securities 350 — 1,125 1,249 Diluted net income attributable to common unitholders $ 228,534 $ 53,126 $ 345,141 $ 322,835 Weighted average number of Common Units outstanding 365,558 361,200 363,542 360,585 Other potential dilutive units 1,713 210 1,801 2,160 Weighted average number of Common Units and potential dilutive securities 367,271 361,410 365,343 362,745 The following table summarizes the data that is excluded from the computation of net income per common share or Common Unit as a result of being anti-dilutive (in thousands): Three Months Ended September 30, Nine Months Ended September 30, 2019 2018 2019 2018 General Partner and Partnership Other potential dilutive shares or units: Anti-dilutive outstanding potential shares or units under fixed stock option and other stock-based compensation plans — — — — Anti-dilutive outstanding participating securities — 2,147 — —

Segment Reporting

Segment Reporting	9 Months Ended
	Sep. 30, 2019
Segment Reporting [Abstract]
Segment Reporting	Segment Reporting Reportable Segments As of September 30, 2019 , we had two reportable operating segments, the first consisting of the ownership and rental of industrial real estate investments. Our ongoing investments in new real estate investments are determined largely upon anticipated geographic trends in supply and demand for industrial buildings, as well as the real estate needs of our major tenants that operate on a national level. Our strategic initiatives and our allocation of resources have been historically based upon allocation among product types, which was consistent with our designation of reportable segments, and after having sold nearly all of our office and medical office properties we intend to increase our investment in industrial properties and treat them as a single operating and reportable segment. Properties not included in our reportable segments, because they are not industrial properties and do not by themselves meet the quantitative thresholds for separate presentation as a reportable segment, are generally referred to as non-reportable Rental Operations. Our non-reportable Rental Operations primarily include our remaining office properties and medical office property at September 30, 2019 . The operations of our industrial properties, as well as our non-reportable Rental Operations, are collectively referred to as "Rental Operations." Our second reportable segment consists of various real estate services such as property management, asset management, maintenance, leasing, development, general contracting and construction management to third-party property owners and joint ventures, and is collectively referred to as "Service Operations." The Service Operations segment is identified as one single operating segment because the lowest level of financial results reviewed by our chief operating decision maker are the results for the Service Operations segment in total. Further, our reportable segments are managed separately because each segment requires different operating strategies and management expertise . Revenues by Reportable Segment The following table shows the revenues for each of the reportable segments, as well as a reconciliation to consolidated revenues (in thousands): Three Months Ended September 30, Nine Months Ended September 30, 2019 2018 2019 2018 Revenues Rental Operations: Industrial $ 213,819 $ 194,922 $ 633,226 $ 574,866 Non-reportable Rental Operations 1,471 1,481 4,401 6,300 Service Operations 25,955 34,986 104,838 94,552 Total segment revenues 241,245 231,389 742,465 675,718 Other revenue 84 509 819 1,295 Consolidated revenue from continuing operations 241,329 231,898 743,284 677,013 Discontinued operations — 85 — 117 Consolidated revenue $ 241,329 $ 231,983 $ 743,284 $ 677,130 Supplemental Performance Measure Property-level net operating income on a cash basis ("PNOI") is the non-GAAP supplemental performance measure that we use to evaluate the performance of, and to allocate resources among, the real estate investments in the reportable and operating segments that comprise our Rental Operations. PNOI for our Rental Operations segments is comprised of rental revenues from continuing operations less rental expenses and real estate taxes from continuing operations, along with certain other adjusting items (collectively referred to as "Rental Operations revenues and expenses excluded from PNOI," as shown in the following table). Additionally, we do not allocate interest expense, depreciation expense and certain other non-property specific revenues and expenses (collectively referred to as "Non-Segment Items," as shown in the following table) to our individual operating segments. We evaluate the performance of our Service Operations reportable segment using net income or loss, as allocated to that segment ("Earnings from Service Operations"). The most comparable GAAP measure to PNOI is income from continuing operations before income taxes. PNOI excludes expenses that materially impact our overall results of operations and, therefore, should not be considered as a substitute for income from continuing operations before income taxes or any other measures derived in accordance with GAAP. Furthermore, PNOI may not be comparable to other similarly titled measures of other companies. The following table shows a reconciliation of our segment-level measures of profitability to consolidated income from continuing operations before income taxes (in thousands and excluding discontinued operations): Three Months Ended September 30, Nine Months Ended September 30, 2019 2018 2019 2018 PNOI Industrial $ 151,906 $ 136,456 $ 446,446 $ 391,645 Non-reportable Rental Operations 883 1,312 2,623 4,029 PNOI, excluding all sold properties 152,789 137,768 449,069 395,674 PNOI from sold properties included in continuing operations 3,119 5,546 12,774 24,668 PNOI, continuing operations $ 155,908 $ 143,314 $ 461,843 $ 420,342 Earnings from Service Operations 2,315 1,256 5,423 5,160 Rental Operations revenues and expenses excluded from PNOI: Straight-line rental income and expense, net 5,537 5,832 16,003 16,763 Revenues related to lease buyouts 1,089 — 1,108 23 Amortization of lease concessions and above and below market rents 1,741 593 4,545 1,599 Intercompany rents and other adjusting items 77 48 180 206 Non-Segment Items: Equity in earnings of unconsolidated joint ventures 3,736 5,552 12,594 15,521 Interest expense (22,604 ) (21,462 ) (68,246 ) (62,137 ) Depreciation and amortization expense (83,924 ) (78,855 ) (242,920 ) (232,216 ) Gain on sale of properties 173,646 (107 ) 204,075 194,741 Interest and other income, net 2,085 4,129 7,377 13,319 General and administrative expenses (13,720 ) (8,959 ) (49,123 ) (43,441 ) Gain on land sales 3,869 3,915 6,569 7,221 Other operating expenses (874 ) (1,104 ) (4,515 ) (3,902 ) Loss on extinguishment of debt — (89 ) (13 ) (240 ) Gain on involuntary conversion — — 2,259 — Non-incremental costs related to successful leases (1,123 ) — (6,726 ) — Other non-segment revenues and expenses, net 125 (1,658 ) 788 (3,887 ) Income from continuing operations before income taxes $ 227,883 $ 52,405 $ 351,221 $ 329,072

Real Estate Assets, Discontinue

Real Estate Assets, Discontinued Operations and Assets Held for Sale	9 Months Ended
	Sep. 30, 2019
Discontinued Operations and Disposal Groups [Abstract]
Discontinued Operations and Assets Held for Sale	Real Estate Assets, Discontinued Operations and Assets Held-for-Sale Real Estate Assets Real estate assets, excluding assets held-for-sale, consisted of the following (in thousands): September 30, 2019 December 31, 2018 Buildings and tenant improvements $ 5,224,690 $ 4,980,003 Land and improvements 2,466,953 2,268,343 Real estate assets $ 7,691,643 $ 7,248,346 Discontinued Operations The following table illustrates the number of sold or held-for-sale properties in this report, all of which were excluded from discontinued operations: Held-for-Sale at September 30, 2019 Sold Year-to-Date in 2019 Sold in 2018 Total Properties sold or classified as held-for-sale 1 27 15 43 The following table illustrates the operational results of the buildings reflected in discontinued operations (in thousands): Three Months Ended September 30, Nine Months Ended September 30, 2019 2018 2019 2018 Revenues $ — $ 85 $ — $ 117 Operating expenses — — — (9 ) Operating income — 85 — 108 Gain on sale of properties 112 136 366 3,157 Income from discontinued operations $ 112 $ 221 $ 366 $ 3,265 The amounts classified in discontinued operations for the three and nine months ended September 30, 2019 and 2018 were comprised of true-up activity related to properties sold in previous years that were classified as discontinued operations. Allocation of Noncontrolling Interests - General Partner The following table illustrates the General Partner's share of the income attributable to common shareholders from continuing operations and discontinued operations, reduced by the allocation of income between continuing and discontinued operations to the noncontrolling interests (in thousands): Three Months Ended September 30, Nine Months Ended September 30, 2019 2018 2019 2018 Income from continuing operations attributable to common shareholders $ 226,455 $ 52,806 $ 341,807 $ 316,598 Income from discontinued operations attributable to common shareholders 111 219 363 3,235 Net income attributable to common shareholders $ 226,566 $ 53,025 $ 342,170 $ 319,833 Allocation of Noncontrolling Interests - Partnership Substantially all of the income from discontinued operations for all periods presented in the Partnership's Consolidated Statements of Operations and Comprehensive Income is attributable to the common unitholders. Assets Held-for-Sale The following table illustrates aggregate balance sheet information for assets held-for-sale (in thousands): Held-for-Sale Properties Included in Continuing Operations September 30, 2019 December 31, 2018 Land and improvements $ 1,268 $ — Buildings and tenant improvements 26,879 — Undeveloped land — 1,966 Accumulated depreciation (7,931 ) (884 ) Deferred leasing and other costs, net 3,057 — Other assets 466 — Total assets held-for-sale $ 23,739 $ 1,082 Accrued expenses $ 761 $ — Other liabilities 1,754 — Total liabilities related to assets held-for-sale $ 2,515 $ —

Financial Instruments (Notes)

Financial Instruments (Notes)	9 Months Ended
	Sep. 30, 2019
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivative Instruments and Hedging Activities Disclosure [Text Block]	Financial Instruments We are exposed to capital market risk, such as changes in interest rates. In an effort to manage interest rate risk, we may enter into interest rate hedging arrangements from time to time. We do not utilize derivative financial instruments for trading or speculative purposes. As of September 30, 2019 and December 31, 2018 , the following forward-starting interest rate swaps designated as cash flow hedges (in thousands) were outstanding: Asset (Liability) Fair Value Notional Amount September 30, 2019 December 31, 2018 $ 125,000 $ (16,630 ) $ (2,914 ) 75,000 (9,993 ) (1,762 ) 75,000 (7,914 ) — 50,000 (5,283 ) — 25,000 (2,284 ) — $ 350,000 $ (42,104 ) $ (4,676 ) We entered into these interest rate swap contracts to hedge our exposure to the changes in the interest rates on the debt issuances, meeting certain criteria, which occur between August 1, 2019 and December 31, 2020. We determined the fair values of these interest rate swaps by using standard market conventions and techniques such as discounted cash flow analysis, option pricing models and termination cost at each balance sheet date. The inputs used to value these interest rate swaps fall within level 2 of the fair value hierarchy. We have recorded the fair values of our interest rate swap contracts, which totaled $42.1 million and $4.7 million as of September 30, 2019 and December 31, 2018

Subsequent Events

Subsequent Events	9 Months Ended
	Sep. 30, 2019
Subsequent Events [Abstract]
Subsequent Events	Subsequent Events Declaration of Dividends/Distributions The General Partner's board of directors declared the following dividends/distributions at its regularly scheduled board meeting held on October 30, 2019 : Class of stock/units Quarterly Amount per Share or Unit Record Date Payment Date Common - Quarterly $0.235 November 14, 2019 November 29, 2019 Redemption of Unsecured Notes On October 24, 2019, we redeemed $250.0 million of unsecured notes that were scheduled to mature in February 2021. We paid a prepayment premium of approximately $6.0 million

New Accounting Pronouncements L

New Accounting Pronouncements Leases (Tables)	9 Months Ended
	Sep. 30, 2019
Leases [Abstract]
Operating Lease, Lease Income [Table Text Block]	All revenues related to lease and lease-related services are included in, and comprise substantially all of, the caption "Rental and Related Revenue" on the Consolidated Statements of Operations and Comprehensive Income. The components of Rental and Related Revenue are as follows (in thousands): Three Months Ended September 30, 2019 Nine Months Ended September 30, 2019 Rental revenue - fixed payments $ 163,516 $ 481,674 Rental revenue - variable payments (1) 51,858 156,772 Rental and related revenue $ 215,374 $ 638,446 (1) Primarily includes tenant recoveries for real estate taxes, insurance and CAM.
Schedule of Future Minimum Payments Receivable [Table Text Block]	The future minimum rents due to us under non-cancelable operating leases are as follows (in thousands): Year September 30, 2019 December 31, 2018 2019 $ 153,301 $ 600,385 2020 623,291 586,609 2021 600,850 529,961 2022 537,556 463,462 2023 466,514 397,150 Thereafter 2,058,372 1,582,598 $ 4,439,884 $ 4,160,165
Lessee, Operating Lease, Liability, Maturity [Table Text Block]	The following table summarizes the future operating lease payments (in thousands) to be made under our non-cancellable lease arrangements: Year September 30, 2019 December 31, 2018 2019 $ 1,521 $ 6,487 2020 8,037 7,594 2021 3,595 2,987 2022 2,877 2,255 2023 2,585 1,949 Thereafter 86,040 85,523 Total undiscounted operating lease payments $ 104,655 $ 106,795 Less: imputed interest (59,634 ) Present value of operating lease payments $ 45,021

Restricted Cash (Tables)

Restricted Cash (Tables)	9 Months Ended
	Sep. 30, 2019
Restricted Cash [Abstract]
Restrictions on Cash and Cash Equivalents [Table Text Block]	The following table provides a reconciliation of cash, cash equivalents, and restricted cash reported within the Consolidated Balance Sheets that sum to the total of the same such amounts shown in the Consolidated Statements of Cash Flows (in thousands): September 30, 2019 December 31, 2018 Cash and cash equivalents $ 121,233 $ 17,901 Restricted cash held in escrow for like-kind exchange 119,240 — Restricted cash included in other escrow deposits and other assets 10,059 7,616 Total cash, cash equivalents, and restricted cash shown in the Consolidated Statements of Cash Flows $ 250,532 $ 25,517

Acquisitions and Dispositions (

Acquisitions and Dispositions (Tables)	9 Months Ended
	Sep. 30, 2019
Property, Plant and Equipment [Line Items]
Schedule of Recognized Identified Assets Acquired and Liabilities Assumed [Table Text Block]	The following table summarizes amounts recognized for each major class of assets (in thousands) for these acquisitions during the nine months ended September 30, 2019 : Real estate assets $ 140,030 Lease related intangible assets 9,331 Fair value of acquired net assets $ 149,361
Summary of Most Significant Assumptions Utilized in the Estimations [Table Text Block]	The most significant assumptions used in calculating the "as-if vacant" value for acquisition activity during the nine months ended September 30, 2019 are as follows: Low High Exit capitalization rate 4.23% 5.26% Net rental rate per square foot $5.90 $15.60

Indebtedness (Tables)

Indebtedness (Tables)	9 Months Ended
	Sep. 30, 2019
Debt Disclosure [Abstract]
Fair Value, Liabilities Measured on a Recurring Basis, Disclosure Only	The following table summarizes the book value and changes in the fair value of our debt (in thousands): Book Value at 12/31/2018 Book Value at 9/30/2019 Fair Value at 12/31/2018 Issuances and Assumptions Payments/Payoffs Adjustments to Fair Value Fair Value at 9/30/2019 Fixed rate secured debt $ 77,601 $ 33,171 $ 80,238 $ — $ (44,352 ) $ (163 ) $ 35,723 Variable rate secured debt 2,200 1,900 2,200 — (300 ) — 1,900 Unsecured debt 2,575,000 2,750,000 2,549,963 175,000 — 172,750 2,897,713 Unsecured line of credit 30,000 — 30,000 — (30,000 ) — — Total $ 2,684,801 $ 2,785,071 $ 2,662,401 $ 175,000 $ (74,652 ) $ 172,587 $ 2,935,336 Less: Deferred financing costs 26,300 17,489 Total indebtedness as reported on the consolidated balance sheets $ 2,658,501 $ 2,767,582
Unsecured Line of Credit	Our unsecured line of credit at September 30, 2019 is described as follows (in thousands): Description Borrowing Capacity Maturity Date Outstanding Balance at September 30, 2019 Unsecured Line of Credit - Partnership $ 1,200,000 January 30, 2022 $ —

Related Party Transactions (Tab

Related Party Transactions (Tables)	9 Months Ended
	Sep. 30, 2019
Related Party Transactions [Abstract]
Schedule of Fees Earned from Related Parties	The following table summarizes the fees earned from these joint ventures, prior to the elimination of our ownership percentage (in thousands): Three Months Ended September 30, Nine Months Ended September 30, 2019 2018 2019 2018 Management fees $ 452 $ 462 $ 1,318 $ 1,359 Leasing fees 759 430 1,315 1,622 Construction and development fees 582 1,128 4,520 2,804

Net Income (Loss) Per Common _2

Net Income (Loss) Per Common Share (Tables)	9 Months Ended
	Sep. 30, 2019
Earnings Per Share [Abstract]
Reconciling the Components of Basic and Diluted Net Income (Loss) per Common Share	The following table reconciles the components of basic and diluted net income per common share or Common Unit (in thousands): Three Months Ended September 30, Nine Months Ended September 30, 2019 2018 2019 2018 General Partner Net income attributable to common shareholders $ 226,566 $ 53,025 $ 342,170 $ 319,833 Less: dividends on participating securities (350 ) (394 ) (1,125 ) (1,249 ) Basic net income attributable to common shareholders $ 226,216 $ 52,631 $ 341,045 $ 318,584 Add back dividends on dilutive participating securities 350 — 1,125 1,249 Noncontrolling interest in earnings of common unitholders 1,968 495 2,971 3,002 Diluted net income attributable to common shareholders $ 228,534 $ 53,126 $ 345,141 $ 322,835 Weighted average number of common shares outstanding 362,416 357,898 360,424 357,235 Weighted average Limited Partner Units outstanding 3,142 3,302 3,118 3,350 Other potential dilutive shares 1,713 210 1,801 2,160 Weighted average number of common shares and potential dilutive securities 367,271 361,410 365,343 362,745 Partnership Net income attributable to common unitholders $ 228,534 $ 53,520 $ 345,141 $ 322,835 Less: distributions on participating securities (350 ) (394 ) (1,125 ) (1,249 ) Basic net income attributable to common unitholders $ 228,184 $ 53,126 $ 344,016 $ 321,586 Add back distributions on dilutive participating securities 350 — 1,125 1,249 Diluted net income attributable to common unitholders $ 228,534 $ 53,126 $ 345,141 $ 322,835 Weighted average number of Common Units outstanding 365,558 361,200 363,542 360,585 Other potential dilutive units 1,713 210 1,801 2,160 Weighted average number of Common Units and potential dilutive securities 367,271 361,410 365,343 362,745
Computation of Anti-Dilutive Common Share	The following table summarizes the data that is excluded from the computation of net income per common share or Common Unit as a result of being anti-dilutive (in thousands): Three Months Ended September 30, Nine Months Ended September 30, 2019 2018 2019 2018 General Partner and Partnership Other potential dilutive shares or units: Anti-dilutive outstanding potential shares or units under fixed stock option and other stock-based compensation plans — — — — Anti-dilutive outstanding participating securities — 2,147 — —

Segment Reporting (Tables)

Segment Reporting (Tables)	9 Months Ended
	Sep. 30, 2019
Segment Reporting [Abstract]
Reconciliation of Revenue from Segments to Consolidated	The following table shows the revenues for each of the reportable segments, as well as a reconciliation to consolidated revenues (in thousands): Three Months Ended September 30, Nine Months Ended September 30, 2019 2018 2019 2018 Revenues Rental Operations: Industrial $ 213,819 $ 194,922 $ 633,226 $ 574,866 Non-reportable Rental Operations 1,471 1,481 4,401 6,300 Service Operations 25,955 34,986 104,838 94,552 Total segment revenues 241,245 231,389 742,465 675,718 Other revenue 84 509 819 1,295 Consolidated revenue from continuing operations 241,329 231,898 743,284 677,013 Discontinued operations — 85 — 117 Consolidated revenue $ 241,329 $ 231,983 $ 743,284 $ 677,130
Summary of Net Operation Income	The following table shows a reconciliation of our segment-level measures of profitability to consolidated income from continuing operations before income taxes (in thousands and excluding discontinued operations): Three Months Ended September 30, Nine Months Ended September 30, 2019 2018 2019 2018 PNOI Industrial $ 151,906 $ 136,456 $ 446,446 $ 391,645 Non-reportable Rental Operations 883 1,312 2,623 4,029 PNOI, excluding all sold properties 152,789 137,768 449,069 395,674 PNOI from sold properties included in continuing operations 3,119 5,546 12,774 24,668 PNOI, continuing operations $ 155,908 $ 143,314 $ 461,843 $ 420,342 Earnings from Service Operations 2,315 1,256 5,423 5,160 Rental Operations revenues and expenses excluded from PNOI: Straight-line rental income and expense, net 5,537 5,832 16,003 16,763 Revenues related to lease buyouts 1,089 — 1,108 23 Amortization of lease concessions and above and below market rents 1,741 593 4,545 1,599 Intercompany rents and other adjusting items 77 48 180 206 Non-Segment Items: Equity in earnings of unconsolidated joint ventures 3,736 5,552 12,594 15,521 Interest expense (22,604 ) (21,462 ) (68,246 ) (62,137 ) Depreciation and amortization expense (83,924 ) (78,855 ) (242,920 ) (232,216 ) Gain on sale of properties 173,646 (107 ) 204,075 194,741 Interest and other income, net 2,085 4,129 7,377 13,319 General and administrative expenses (13,720 ) (8,959 ) (49,123 ) (43,441 ) Gain on land sales 3,869 3,915 6,569 7,221 Other operating expenses (874 ) (1,104 ) (4,515 ) (3,902 ) Loss on extinguishment of debt — (89 ) (13 ) (240 ) Gain on involuntary conversion — — 2,259 — Non-incremental costs related to successful leases (1,123 ) — (6,726 ) — Other non-segment revenues and expenses, net 125 (1,658 ) 788 (3,887 ) Income from continuing operations before income taxes $ 227,883 $ 52,405 $ 351,221 $ 329,072

Real Estate Assets, Discontin_2

Real Estate Assets, Discontinued Operations and Assets Held for Sale (Tables)	9 Months Ended
	Sep. 30, 2019
Discontinued Operations and Disposal Groups [Abstract]
Schedule of Real Estate Properties [Table Text Block]	Real estate assets, excluding assets held-for-sale, consisted of the following (in thousands): September 30, 2019 December 31, 2018 Buildings and tenant improvements $ 5,224,690 $ 4,980,003 Land and improvements 2,466,953 2,268,343 Real estate assets $ 7,691,643 $ 7,248,346
Table Illustration of Number of Properties in Discontinued Operations	The following table illustrates the number of sold or held-for-sale properties in this report, all of which were excluded from discontinued operations: Held-for-Sale at September 30, 2019 Sold Year-to-Date in 2019 Sold in 2018 Total Properties sold or classified as held-for-sale 1 27 15 43
Table Illustration of Discontinued Operations in Statement of Operations	The following table illustrates the operational results of the buildings reflected in discontinued operations (in thousands): Three Months Ended September 30, Nine Months Ended September 30, 2019 2018 2019 2018 Revenues $ — $ 85 $ — $ 117 Operating expenses — — — (9 ) Operating income — 85 — 108 Gain on sale of properties 112 136 366 3,157 Income from discontinued operations $ 112 $ 221 $ 366 $ 3,265
Allocation of Common Shareholders' Income (Loss) Between Continuing and Discontinued Operations	The following table illustrates the General Partner's share of the income attributable to common shareholders from continuing operations and discontinued operations, reduced by the allocation of income between continuing and discontinued operations to the noncontrolling interests (in thousands): Three Months Ended September 30, Nine Months Ended September 30, 2019 2018 2019 2018 Income from continuing operations attributable to common shareholders $ 226,455 $ 52,806 $ 341,807 $ 316,598 Income from discontinued operations attributable to common shareholders 111 219 363 3,235 Net income attributable to common shareholders $ 226,566 $ 53,025 $ 342,170 $ 319,833
Schedule of Discontinued Operations, Properties Held-for-Sale, Aggregate Balance Sheet Information [Table Text Block]	The following table illustrates aggregate balance sheet information for assets held-for-sale (in thousands): Held-for-Sale Properties Included in Continuing Operations September 30, 2019 December 31, 2018 Land and improvements $ 1,268 $ — Buildings and tenant improvements 26,879 — Undeveloped land — 1,966 Accumulated depreciation (7,931 ) (884 ) Deferred leasing and other costs, net 3,057 — Other assets 466 — Total assets held-for-sale $ 23,739 $ 1,082 Accrued expenses $ 761 $ — Other liabilities 1,754 — Total liabilities related to assets held-for-sale $ 2,515 $ —

Financial Instruments (Tables)

Financial Instruments (Tables)	9 Months Ended
	Sep. 30, 2019
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Schedule of Derivative Instruments [Table Text Block]	As of September 30, 2019 and December 31, 2018 , the following forward-starting interest rate swaps designated as cash flow hedges (in thousands) were outstanding: Asset (Liability) Fair Value Notional Amount September 30, 2019 December 31, 2018 $ 125,000 $ (16,630 ) $ (2,914 ) 75,000 (9,993 ) (1,762 ) 75,000 (7,914 ) — 50,000 (5,283 ) — 25,000 (2,284 ) — $ 350,000 $ (42,104 ) $ (4,676 )

Subsequent Events (Tables)

Subsequent Events (Tables)	9 Months Ended
	Sep. 30, 2019
Subsequent Events [Abstract]
Schedule of Dividends Declared	The General Partner's board of directors declared the following dividends/distributions at its regularly scheduled board meeting held on October 30, 2019 : Class of stock/units Quarterly Amount per Share or Unit Record Date Payment Date Common - Quarterly $0.235 November 14, 2019 November 29, 2019

General Basis of Presentation_2

General Basis of Presentation (Details)	9 Months Ended
	Sep. 30, 2019
Common partnership interests of DRLP Owned	99.10%
Duke Realty Limited Partnership [Member]
Limited Liability Company or Limited Partnership, Members or Limited Partners, Ownership Interest	0.90%

New Accounting Pronouncements_2

New Accounting Pronouncements Leases (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2018
Leases [Abstract]
Expense impact of costs attributable to successful leasing activities	$ 1,123,000	$ 0	$ 6,726,000	$ 0
Increase (Decrease) in Deferred Leasing Fees		$ 852,000		$ 9,200,000
Rental revenue - fixed payments	163,516,000		481,674,000
Rental revenue - variable payments (1)	51,858,000		156,772,000
Rental and related revenue	215,374,000		638,446,000
2019	153,301,000		153,301,000		$ 600,385,000
2020	623,291,000		623,291,000		586,609,000
2021	600,850,000		600,850,000		529,961,000
2022	537,556,000		537,556,000		463,462,000
2023	466,514,000		466,514,000		397,150,000
Thereafter	2,058,372,000		2,058,372,000		1,582,598,000
Lessor, Operating Lease, Payments to be Received	4,439,884,000		4,439,884,000		4,160,165,000
Operating Lease, Right-of-Use Asset	38,800,000		38,800,000
Operating Lease, Liability	45,021,000		45,021,000
2019	1,521,000		1,521,000		6,487,000
2020	8,037,000		8,037,000		7,594,000
2021	3,595,000		3,595,000		2,987,000
2022	2,877,000		2,877,000		2,255,000
2023	2,585,000		2,585,000		1,949,000
Thereafter	86,040,000		86,040,000		85,523,000
Total undiscounted operating lease payments	104,655,000		104,655,000		$ 106,795,000
Less: imputed interest	$ (59,634,000)		$ (59,634,000)
Operating Lease, Weighted Average Remaining Lease Term	32 years 6 months		32 years 6 months
Operating Lease, Weighted Average Discount Rate, Percent	4.55%		4.55%

Restricted Cash (Details)

Restricted Cash (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2019	Dec. 31, 2018	Sep. 30, 2018	Dec. 31, 2017
Restricted Cash [Abstract]
Restrictions on Cash and Cash Equivalents [Table Text Block]	The following table provides a reconciliation of cash, cash equivalents, and restricted cash reported within the Consolidated Balance Sheets that sum to the total of the same such amounts shown in the Consolidated Statements of Cash Flows (in thousands): September 30, 2019 December 31, 2018 Cash and cash equivalents $ 121,233 $ 17,901 Restricted cash held in escrow for like-kind exchange 119,240 — Restricted cash included in other escrow deposits and other assets 10,059 7,616 Total cash, cash equivalents, and restricted cash shown in the Consolidated Statements of Cash Flows $ 250,532 $ 25,517
Cash and Cash Equivalents, at Carrying Value	$ 121,233	$ 17,901
Restricted cash held in escrow for like kind exchange	119,240	0
Escrow Deposit	10,059	7,616
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents	$ 250,532	$ 25,517	$ 272,801	$ 193,627

Variable Interest Entities (Bal

Variable Interest Entities (Balances Related to Joint Ventures) (Details) $ in Millions	Sep. 30, 2019USD ($)
Variable Interest Entity, Not Primary Beneficiary, Disclosures [Abstract]
Maximum Guarantee Exposure for Joint Venture Loans	$ 160.1

Acquisitions and Dispositions_2

Acquisitions and Dispositions (Narrative) (Details) $ in Thousands	9 Months Ended
	Sep. 30, 2019USD ($)buildings	Sep. 30, 2018USD ($)
Property, Plant and Equipment [Line Items]
Payments to Acquire Real Estate | $	$ 146,632	$ 208,914
Number of Real Estate Properties | buildings	4
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	6 years 3 months 18 days

Acquisitions and Dispositions_3

Acquisitions and Dispositions (Summary of Allocation of Fair Value of Amounts Recognized) (Details) $ in Thousands	Sep. 30, 2019USD ($)
Property, Plant and Equipment [Line Items]
Real estate assets	$ 140,030
Lease related intangible assets	9,331
Fair value of acquired net assets	$ 149,361

Acquisitions and Dispositions_4

Acquisitions and Dispositions (Summary of Significant Assumptions Utilized in Estimates) (Details)	Sep. 30, 2019$ / sqft
Industrial [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Net rental rate per square foot	5.90
Industrial [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Net rental rate per square foot	15.60
Measurement Input, Cap Rate [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Fair Value Inputs, Capitalization Rate	4.23%
Measurement Input, Cap Rate [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Fair Value Inputs, Capitalization Rate	5.26%

Acquisitions and Dispositions D

Acquisitions and Dispositions Dispositions (Details) $ in Thousands	1 Months Ended	9 Months Ended
	Sep. 30, 2019USD ($)	Sep. 30, 2019USD ($)	Sep. 30, 2018USD ($)
Dispositions Disclosures [Line Items]
Payments to Acquire Real Estate		$ 146,632	$ 208,914
Proceeds from Sale of Real Estate Held-for-investment		379,774	434,584
Number of Real Estate Properties Sold	18
Proceeds from Sale of Productive Assets	$ 217,500
Gain (Loss) on Sale of Properties	$ 146,300	211,010	$ 205,119
Square Feet of Properties Sold	4,100,000
Proceeds from Collection of Notes Receivable		$ 145,000

Indebtedness (Summary of Book V

Indebtedness (Summary of Book Value and Changes in Fair Value of Debt) (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2019	Dec. 31, 2018
Book value	$ 2,767,582	$ 2,658,501
Fair value	2,935,336	2,662,401
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Issuances	175,000
Payments/Payoffs	(74,652)
Adjustments to fair value	172,587
Long-term Debt, Gross	2,785,071	2,684,801
Debt Issuance Costs, Net	17,489	26,300
Fixed Rate Secured Debt [Member]
Book value	33,171	77,601
Fair value	35,723	80,238
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Issuances	0
Payments/Payoffs	(44,352)
Adjustments to fair value	(163)
Variable Rate Secured Debt [Member]
Book value	1,900	2,200
Fair value	1,900	2,200
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Issuances	0
Payments/Payoffs	(300)
Adjustments to fair value	0
Unsecured Debt [Member]
Book value	2,750,000	2,575,000
Fair value	2,897,713	2,549,963
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Issuances	175,000
Payments/Payoffs	0
Adjustments to fair value	172,750
Unsecured Line of Credit DRLP [Member]
Book value	0	30,000
Fair value	0	$ 30,000
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Issuances	0
Payments/Payoffs	(30,000)
Adjustments to fair value	$ 0

Indebtedness Secured Debt (Deta

Indebtedness Secured Debt (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Effective Percentage	2.80%
Repayments of Secured Debt	$ 44,652	$ 231,070
Fixed Rate Secured Debt [Member]
Debt Instrument [Line Items]
Repayments of Secured Debt	$ 41,700
Debt Instrument, Interest Rate, Stated Percentage	7.76%
Minimum [Member] | Fixed Rate Secured Debt [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Effective Percentage	3.10%
Maximum [Member] | Fixed Rate Secured Debt [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Effective Percentage	3.40%

Indebtedness Unsecured Debt (De

Indebtedness Unsecured Debt (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2019	Dec. 31, 2017
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	3.38%
Issuance Price of Notes as a Percentage of Par Value	104.16%
Debt Instrument, Interest Rate, Effective Percentage	2.80%
Document Period End Date	Sep. 30, 2019
Unsecured Debt [Member]
Debt Instrument [Line Items]
Debt Instrument, Estimated Trading Values, Percent of Face Value, Minimum	102.00%
Debt Instrument, Estimated Trading Values, Percent of Face Value, Maximum	131.00%
Debt Instrument, Covenant Compliance	We were in compliance with all such financial covenants at
Unsecured Debt [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount	$ 175	$ 300

Indebtedness (Unsecured Line of

Indebtedness (Unsecured Line of Credit) (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2019	Dec. 31, 2018
Debt Instrument, Interest Rate, Effective Percentage	2.80%
Line of credit balance	$ 0	$ 30,000
London Interbank Offered Rate (LIBOR) [Member]
Debt Instrument, Description of Variable Rate Basis	LIBOR
Unsecured Line of Credit DRLP [Member]
Line of Credit Facility, Covenant Compliance	we were in compliance with all financial covenants under this line of credit.
Maximum Capacity	$ 1,200,000
Maturity date	Jan. 30, 2022
Line of Credit Facility Option to Increase Borrowing Limit	$ 800,000
Line of credit balance	0
Line of Credit Facility, Maximum Borrowing Capacity	$ 2,000,000
Unsecured Line of Credit DRLP [Member] | London Interbank Offered Rate (LIBOR) [Member]
Debt Instrument, Basis Spread on Variable Rate	0.875%

Shareholder's Equity (Details)

Shareholder's Equity (Details) - USD ($) $ / shares in Units, $ in Thousands, shares in Millions	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2018
Class of Stock [Line Items]
Common Stock, Par or Stated Value Per Share	$ 0.01		$ 0.01
Stock Issued During Period, Shares, New Issues	6.6
Proceeds from Issuance of Common Stock	$ 222,672	$ 30,591
Common Stock Value Authorized Under Stock Offering Program	400,000
At-the-market equity issuance [Member]
Class of Stock [Line Items]
Proceeds from Issuance of Common Stock	215,600
Gross Proceeds [Member] | At-the-market equity issuance [Member]
Class of Stock [Line Items]
Proceeds from Issuance of Common Stock	$ 218,100

Related Party Transactions (Sch

Related Party Transactions (Schedule of Fees Earned from Related Parties) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Management Fees [Member]
Revenue from related party transactions	$ 452	$ 462	$ 1,318	$ 1,359
Leasing Fees [Member]
Revenue from related party transactions	759	430	1,315	1,622
Construction and Development Fees [Member]
Revenue from related party transactions	$ 582	$ 1,128	$ 4,520	$ 2,804

Net Income (Loss) Per Common _3

Net Income (Loss) Per Common Share Reconciling the Components of Basic and Diluted Net Income (Loss) per Common Share (Details) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Net income attributable to common shareholders	$ 226,566	$ 53,025	$ 342,170	$ 319,833
Less: dividends on participating securities	(350)	(394)	(1,125)	(1,249)
Basic net income attributable to common shareholders	226,216	52,631	341,045	318,584
Add back dividends on dilutive participating securities	350	0	1,125	1,249
Noncontrolling interest in earnings of common unitholders	1,968	495	2,971	3,002
Diluted net income attributable to common shareholders	$ 228,534	$ 53,126	$ 345,141	$ 322,835
Weighted average number of common shares/units outstanding, Basic	362,416	357,898	360,424	357,235
Weighted average Limited Partner Units outstanding	3,142	3,302	3,118	3,350
Other potential dilutive shares/units	1,713	210	1,801	2,160
Weighted average number of common shares/units and potential dilutive securities	367,271	361,410	365,343	362,745
Duke Realty Limited Partnership [Member]
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Net income attributable to common shareholders	$ 228,534	$ 53,520	$ 345,141	$ 322,835
Less: dividends on participating securities	(350)	(394)	(1,125)	(1,249)
Basic net income attributable to common unitholders	228,184	53,126	344,016	321,586
Add back dividends on dilutive participating securities	350	0	1,125	1,249
Diluted net income attributable to common unitholders	$ 228,534	$ 53,126	$ 345,141	$ 322,835
Weighted average number of common shares/units outstanding, Basic	365,558	361,200	363,542	360,585
Other potential dilutive shares/units	1,713	210	1,801	2,160
Weighted average number of common shares/units and potential dilutive securities	367,271	361,410	365,343	362,745

Net Income (Loss) Per Common _4

Net Income (Loss) Per Common Share (Computation of Anti-Dilutive Common Shares) (Details) - shares shares in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Stock Option [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Anti-dilutive securities	0	0	0	0
Participating Securities [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Anti-dilutive securities	0	2,147	0	0

Segment Reporting Summary of Re

Segment Reporting Summary of Revenues (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019USD ($)	Sep. 30, 2018USD ($)	Sep. 30, 2019USD ($)	Sep. 30, 2018USD ($)
Segment Reporting, Revenue Reconciling Item [Line Items]
Number of Reportable Segments			2
Rental and related revenue	$ 215,374	$ 196,912	$ 638,446	$ 582,461
General contractor and service fee revenue	25,955	34,986	104,838	94,552
Revenues	241,329	231,898	743,284	677,013
Disposal Group, Including Discontinued Operation, Revenue	0	85	0	117
Total Revenues Including Revenues Related To Discontinued Operations	241,329	231,983	743,284	677,130
Operating Segments [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	241,245	231,389	742,465	675,718
Operating Segments [Member] | Industrial [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Rental and related revenue	213,819	194,922	633,226	574,866
Operating Segments [Member] | All Other Segments [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Rental and related revenue	1,471	1,481	4,401	6,300
Operating Segments [Member] | Service Operations [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
General contractor and service fee revenue	25,955	34,986	104,838	94,552
Corporate, Non-Segment [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Rental and related revenue	84	509	819	1,295
Disposal Group, Including Discontinued Operation, Revenue	$ 0	$ 85	$ 0	$ 117

Segment Reporting (Summary of N

Segment Reporting (Summary of Net Operating Income (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Statement [Line Items]
Straight-line rental income and expense, net			$ 15,627	$ 16,763
Equity in earnings of unconsolidated joint ventures	$ 3,736	$ 5,552	12,594	15,521
Interest expense	(22,604)	(21,462)	(68,246)	(62,137)
Depreciation and amortization expense	(83,924)	(78,855)	(242,920)	(232,216)
Gain on sale of properties	173,646	(107)	204,075	194,741
Interest and other income, net	2,085	4,129	7,377	13,319
General and administrative expenses	(13,720)	(8,959)	(49,123)	(43,441)
Gain on land sales	3,869	3,915	6,569	7,221
Other operating expenses	(874)	(1,104)	(4,515)	(3,902)
Loss on extinguishment of debt	0	(89)	(13)	(240)
Gain on involuntary conversion	0	0	2,259	0
Non-incremental costs related to successful leases	1,123	0	6,726	0
Income from continuing operations before income taxes	227,883	52,405	351,221	329,072
Operating Segments [Member]
Statement [Line Items]
Property Level Net Operating Income – Cash Basis	152,789	137,768	449,069	395,674
Property Level Net Income, Cash Basis, Continuing Operations	155,908	143,314	461,843	420,342
Operating Segments [Member] | Industrial [Member]
Statement [Line Items]
Property Level Net Operating Income – Cash Basis	151,906	136,456	446,446	391,645
Operating Segments [Member] | All Other Segments [Member]
Statement [Line Items]
Property Level Net Operating Income – Cash Basis	883	1,312	2,623	4,029
Operating Segments [Member] | Service Operations [Member]
Statement [Line Items]
Earnings from Service Operations	2,315	1,256	5,423	5,160
Segment Reconciling Items [Member]
Statement [Line Items]
PNOI from sold properties included in continuing operations	3,119	5,546	12,774	24,668
Straight-line rental income and expense, net	5,537	5,832	16,003	16,763
Revenues Related to Lease Buyouts	1,089	0	1,108	23
Amortization of lease concessions and above and below market rents	1,741	593	4,545	1,599
Intercompany rents and other adjusting items	77	48	180	206
Corporate, Non-Segment [Member]
Statement [Line Items]
Equity in earnings of unconsolidated joint ventures	3,736	5,552	12,594	15,521
Interest expense	(22,604)	(21,462)	(68,246)	(62,137)
Depreciation and amortization expense	(83,924)	(78,855)	(242,920)	(232,216)
Gain on sale of properties	173,646	(107)	204,075	194,741
Interest and other income, net	2,085	4,129	7,377	13,319
General and administrative expenses	(13,720)	(8,959)	(49,123)	(43,441)
Gain on land sales	3,869	3,915	6,569	7,221
Other operating expenses	(874)	(1,104)	(4,515)	(3,902)
Loss on extinguishment of debt	0	(89)	(13)	(240)
Gain on involuntary conversion	0	0	2,259	0
Non-incremental costs related to successful leases	(1,123)	0	(6,726)	0
Other non-segment revenues and expenses, net	$ 125	$ (1,658)	$ 788	$ (3,887)

Real Estate Assets, Discontin_3

Real Estate Assets, Discontinued Operations and Assets Held for Sale Real Estate Assets (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Real Estate Assets [Abstract]
Investment Building and Building Improvements	$ 5,224,690	$ 4,980,003
Land and Land Improvements	2,466,953	2,268,343
Real Estate Assets	$ 7,691,643	$ 7,248,346

Real Estate Assets, Discontin_4

Real Estate Assets, Discontinued Operations and Assets Held for Sale (Table Illustration of Number of Properties in Discontinued Operations) (Details) - buildings	9 Months Ended	12 Months Ended
	Sep. 30, 2019	Dec. 31, 2018
Continuing Operations, Number of In-service Properties Held for Sale	1
Continuing Operations, Number of Real Estate Properties Sold	27	15
Total Properties Sold or Classified as Held for Sale	43

Real Estate Assets, Discontin_5

Real Estate Assets, Discontinued Operations and Assets Held for Sale (Table Illustration of Discontinued Operations in Income Statement) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Discontinued Operations
Revenues	$ 0	$ 85	$ 0	$ 117
Operating Expenses	0	0	0	(9)
Operating income	0	85	0	108
Gain on sale of properties	112	136	366	3,157
Discontinued Operation, Income (Loss) from Discontinued Operation	112	221	366	3,265
Income from discontinued operations	$ 112	$ 221	$ 366	$ 3,265

Real Estate Assets, Discontin_6

Real Estate Assets, Discontinued Operations and Assets Held for Sale (Allocation of Shareholders' Income (Loss) Between Continuing and Discontinued Operations) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Discontinued Operations
Income from continuing operations attributable to common shareholders	$ 226,455	$ 52,806	$ 341,807	$ 316,598
Income from discontinued operations attributable to common shareholders	111	219	363	3,235
Net income attributable to common shareholders	$ 226,566	$ 53,025	$ 342,170	$ 319,833

Real Estate Assets, Discontin_7

Real Estate Assets, Discontinued Operations and Assets Held for Sale (Aggregate Balance Sheet of Properties Held for Sale Included in Discontinued Operations) (Details) $ in Thousands	9 Months Ended
	Sep. 30, 2019USD ($)buildings	Dec. 31, 2018USD ($)
Held for Sale Assets in Continuing and Discontinued Operations
Continuing Operations, Number of In-service Properties Held for Sale | buildings	1
Total assets held-for-sale	$ 23,739	$ 1,082
Total liabilities held-for-sale	2,515	0
Continuing Operations [Member]
Held for Sale Assets in Continuing and Discontinued Operations
Land and Land Improvements Held-for-Sale	1,268	0
Buildings and Tenant Improvements Held-for-Sale	26,879	0
Inventory, Land Held-for-sale	0	1,966
Accumulated Depreciation of Assets Held-for-Sale	(7,931)	(884)
Deferred leasing and other costs, net	3,057	0
Other assets	466	0
Total assets held-for-sale	23,739	1,082
Disposal Group, Including Discontinued Operation, Accrued Liabilities	761	0
Disposal Group, Including Discontinued Operation, Other Liabilities	1,754	0
Total liabilities held-for-sale	$ 2,515	$ 0

Financial Instruments (Details)

Financial Instruments (Details) - Interest Rate Swap [Member] - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative, Notional Amount	$ 350,000
Derivative, Net Liability Position, Aggregate Fair Value	(42,104)	$ (4,676)
Contract One [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative, Notional Amount	125,000
Derivative, Net Liability Position, Aggregate Fair Value	(16,630)	(2,914)
Contract Two [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative, Notional Amount	75,000
Derivative, Net Liability Position, Aggregate Fair Value	(9,993)	(1,762)
Contract Three [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative, Notional Amount	75,000
Derivative, Net Liability Position, Aggregate Fair Value	(7,914)	0
Contract Four [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative, Notional Amount	50,000
Derivative, Net Liability Position, Aggregate Fair Value	(5,283)	0
Contract Five [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative, Notional Amount	25,000
Derivative, Net Liability Position, Aggregate Fair Value	$ (2,284)	$ 0

Subsequent Events (Details)

Subsequent Events (Details) - USD ($) $ / shares in Units, $ in Thousands	Oct. 24, 2019	Dec. 31, 2019	Sep. 30, 2019	Sep. 30, 2018
Subsequent Event [Line Items]
Debt Instrument, Redemption, Description			$ 0	$ 1,998
Subsequent Event [Member]
Subsequent Event [Line Items]
Debt Instrument, Redemption, Description	$ 250,000
Payment for Debt Extinguishment or Debt Prepayment Cost	$ 6,000
Subsequent Event [Member] | Common Stock [Member]
Subsequent Event [Line Items]
Common stock dividends declared per share		$ 0.235
Record date		Nov. 14, 2019
Dividends Payable, Date to be Paid		Nov. 29, 2019