Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Assets [Abstract]
Real Estate Assets	$ 9,616,076	$ 8,745,155
Construction in Progress	744,871	695,219
Investments in and advances to unconsolidated joint ventures	168,336	131,898
Undeveloped land	473,317	291,614
Real estate investment property, at cost, total	11,002,600	9,863,886
Accumulated depreciation	(1,684,413)	(1,659,308)
Net real estate investments	9,318,187	8,204,578
Real estate investments and other assets held-for-sale	144,651	67,946
Cash and cash equivalents	69,752	6,309
Accounts receivable	13,449	15,204
Straight-line rent receivable	172,225	153,943
Receivables on construction contracts, including retentions	57,258	30,583
Deferred Leasing and other costs, net of accumulated amortization	337,936	329,765
Restricted cash held in escrow for like-kind exchange	0	47,682
Other escrow deposits and other assets	332,197	255,384
Total Assets	10,445,655	9,111,394
Liabilities and Equity [Abstract]
Secured debt, net of deferred financing costs	59,418	64,074
Unsecured debt, net of deferred financing costs	3,629,864	3,025,977
Unsecured line of credit	0	295,000
Long-term debt, total	3,689,282	3,385,051
Liabilities related to real estate investments held-for-sale	6,278	7,740
Construction payables and amounts due subcontractors, including retentions	107,009	62,332
Accrued real estate taxes	77,464	76,501
Accrued interest	20,815	18,363
Other Liabilities	339,023	269,806
Tenant Security Deposits and Prepaid Rents	66,823	57,153
Total Liabilities	4,306,694	3,876,946
Equity:
Common shares	3,825	3,733
Additional paid in capital	6,143,147	5,723,326
Accumulated other comprehensive loss	(28,011)	(31,568)
Distributions in excess of net income	(75,210)	(532,519)
Total stockholders' equity	6,043,751	5,162,972
Noncontrolling interests	95,210	71,476
Total Equity	6,138,961	5,234,448
Total Liabilities and Equity	10,445,655	9,111,394
Duke Realty Limited Partnership [Member]
Assets [Abstract]
Real Estate Assets	9,616,076	8,745,155
Construction in Progress	744,871	695,219
Investments in and advances to unconsolidated joint ventures	168,336	131,898
Undeveloped land	473,317	291,614
Real estate investment property, at cost, total	11,002,600	9,863,886
Accumulated depreciation	(1,684,413)	(1,659,308)
Net real estate investments	9,318,187	8,204,578
Real estate investments and other assets held-for-sale	144,651	67,946
Cash and cash equivalents	69,752	6,309
Accounts receivable	13,449	15,204
Straight-line rent receivable	172,225	153,943
Receivables on construction contracts, including retentions	57,258	30,583
Deferred Leasing and other costs, net of accumulated amortization	337,936	329,765
Restricted cash held in escrow for like-kind exchange	0	47,682
Other escrow deposits and other assets	332,197	255,384
Total Assets	10,445,655	9,111,394
Liabilities and Equity [Abstract]
Secured debt, net of deferred financing costs	59,418	64,074
Unsecured debt, net of deferred financing costs	3,629,864	3,025,977
Unsecured line of credit	0	295,000
Long-term debt, total	3,689,282	3,385,051
Liabilities related to real estate investments held-for-sale	6,278	7,740
Construction payables and amounts due subcontractors, including retentions	107,009	62,332
Accrued real estate taxes	77,464	76,501
Accrued interest	20,815	18,363
Other Liabilities	339,023	269,806
Tenant Security Deposits and Prepaid Rents	66,823	57,153
Total Liabilities	4,306,694	3,876,946
Equity:
Common equity	6,071,762	5,194,540
Limited Partners' common equity	90,679	66,874
Accumulated other comprehensive loss	(28,011)	(31,568)
Total partners' equity	6,134,430	5,229,846
Noncontrolling interest	4,531	4,602
Total Equity	6,138,961	5,234,448
Total Liabilities and Equity	$ 10,445,655	$ 9,111,394