Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021
Cash flows from operating activities:
Net income	$ 355,165	$ 257,860
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation of buildings and tenant improvements	158,194	156,470
Amortization of deferred leasing and other costs	29,751	28,832
Amortization of deferred financing costs	4,958	4,888
Straight-line rental income and expense, net	(21,808)	(14,497)
Asset Impairment Charges	1,563	0
Loss on debt extinguishment	21,948	4,008
Gain on involuntary conversion	0	(3,222)
Gain on land and property sales	(238,696)	(127,681)
Third-party construction contracts, net	1,649	(1,588)
Other accrued revenues and expenses, net	12,329	23,993
Operating distributions received in excess of (less than) equity in earnings from unconsolidated joint ventures	3,059	(17,113)
Net cash provided by operating activities	328,112	311,950
Cash flows from investing activities:
Development of real estate investments	(353,492)	(332,091)
Acquisition of buildings and related intangible assets	(89,113)	(218,788)
Acquisition of land and other real estate assets	(308,554)	(223,280)
Second generation tenant improvements, leasing costs and building improvements	(33,457)	(33,747)
Other deferred leasing costs	(20,678)	(16,448)
Other assets	(11,525)	(48,736)
Proceeds from land and depreciated property sales, net	334,696	265,973
Capital distributions from unconsolidated joint ventures	33,645	20,503
Capital contributions and advances to unconsolidated joint ventures	(12,519)	(8,986)
Net cash used for investing activities	(460,997)	(595,600)
Cash flows from financing activities:
Proceeds from issuance of common shares, net	116,107	187,217
Proceeds from unsecured debt	500,000	446,634
Payments on unsecured debt	(320,110)	(127,758)
Payments on secured indebtedness including principal amortization	(2,143)	(2,028)
Repayments on line of credit, net	0	(30,000)
Distributions to common shareholders/unitholders	(214,824)	(191,082)
Distributions to noncontrolling Interest	(2,532)	(2,116)
Tax payments on stock-based compensation awards	(7,254)	(4,757)
Change in book cash overdrafts	24,745	3,758
Other Financing Activities	48	(270)
Deferred financing costs	(2,418)	(9,961)
Redemption of Limited Partner Units	0	(37)
Net cash provided by financing activities	91,619	269,600
Net decrease in cash, cash equivalents and restricted cash	(41,266)	(14,050)
Cash, cash equivalents and restricted cash at beginning of period	103,164	67,223
Cash, cash equivalents and restricted cash at end of period	61,898	53,173
Noncash activities:
Lease liabilities arising from right-of-use assets	636	18,257
Assumption of indebtedness and other liabilities in real estate acquisitions	22,163	84,354
Contribution of properties to unconsolidated joint venture	67,148	0
Non-cash distribution of assets from unconsolidated joint ventures, net	0	11,124
Issuance of Limited Partner Units for acquisition	0	11,576
Duke Realty Limited Partnership [Member]
Cash flows from operating activities:
Net income	355,165	257,860
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation of buildings and tenant improvements	158,194	156,470
Amortization of deferred leasing and other costs	29,751	28,832
Amortization of deferred financing costs	4,958	4,888
Straight-line rental income and expense, net	(21,808)	(14,497)
Asset Impairment Charges	1,563	0
Loss on debt extinguishment	21,948	4,008
Gain on involuntary conversion	0	(3,222)
Gain on land and property sales	(238,696)	(127,681)
Third-party construction contracts, net	1,649	(1,588)
Other accrued revenues and expenses, net	12,329	23,993
Operating distributions received in excess of (less than) equity in earnings from unconsolidated joint ventures	3,059	(17,113)
Net cash provided by operating activities	328,112	311,950
Cash flows from investing activities:
Development of real estate investments	(353,492)	(332,091)
Acquisition of buildings and related intangible assets	(89,113)	(218,788)
Acquisition of land and other real estate assets	(308,554)	(223,280)
Second generation tenant improvements, leasing costs and building improvements	(33,457)	(33,747)
Other deferred leasing costs	(20,678)	(16,448)
Other assets	(11,525)	(48,736)
Proceeds from land and depreciated property sales, net	334,696	265,973
Capital distributions from unconsolidated joint ventures	33,645	20,503
Capital contributions and advances to unconsolidated joint ventures	(12,519)	(8,986)
Net cash used for investing activities	(460,997)	(595,600)
Cash flows from financing activities:
Contributions from the General Partner	116,107	187,217
Proceeds from unsecured debt	500,000	446,634
Payments on unsecured debt	(320,110)	(127,758)
Payments on secured indebtedness including principal amortization	(2,143)	(2,028)
Repayments on line of credit, net	0	(30,000)
Distributions to common shareholders/unitholders	(216,996)	(192,983)
Distributions to noncontrolling Interest	(360)	(215)
Tax payments on stock-based compensation awards	(7,254)	(4,757)
Change in book cash overdrafts	24,745	3,758
Other Financing Activities	48	(270)
Deferred financing costs	(2,418)	(9,961)
Redemption of Limited Partner Units	0	(37)
Net cash provided by financing activities	91,619	269,600
Net decrease in cash, cash equivalents and restricted cash	(41,266)	(14,050)
Cash, cash equivalents and restricted cash at beginning of period	103,164	67,223
Cash, cash equivalents and restricted cash at end of period	61,898	53,173
Noncash activities:
Lease liabilities arising from right-of-use assets	636	18,257
Assumption of indebtedness and other liabilities in real estate acquisitions	22,163	84,354
Contribution of properties to unconsolidated joint venture	67,148	0
Non-cash distribution of assets from unconsolidated joint ventures, net	0	11,124
Issuance of Limited Partner Units for acquisition	$ 0	$ 11,576