Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013
ASSETS
Land and improvements	$ 1,477,680	$ 1,438,007
Buildings and tenant improvements	5,640,103	5,531,726
Construction in progress	384,807	256,895
Investments in and advances to unconsolidated companies	316,015	342,947
Undeveloped land	542,490	590,052
Real estate investment property, at cost, total	8,361,095	8,159,627
Accumulated depreciation	(1,464,968)	(1,368,406)
Net real estate investments	6,896,127	6,791,221
Real estate investments and other assets held-for-sale	35,414	57,466
Cash and cash equivalents	66,132	19,275
Accounts receivable, net of allowance	32,416	26,173
Straight-line rent receivable, net of allowance	131,209	118,251
Receivables on construction contracts, including retentions	30,446	19,209
Deferred financing costs, net of accumulated amortization	28,425	36,250
Deferred leasing and other costs, net of accumulated amortization	441,338	466,979
Escrow deposits and other assets	222,688	217,790
Total Assets	7,884,195	7,752,614
LIABILITIES AND EQUITY
Secured debt	1,003,851	1,100,124
Unsecured debt	3,064,696	3,066,252
Unsecured line of credit	140,000	88,000
Long-term debt, total	4,208,547	4,254,376
Liabilities related to real estate investments held-for-sale	705	2,075
Construction payables and amounts due subcontractors, including retentions	93,080	69,380
Accrued real estate taxes	103,573	74,696
Accrued interest	34,086	52,824
Other accrued expenses	45,353	67,495
Other liabilities	121,249	142,589
Tenant security deposits and prepaid rents	48,392	44,550
Total Liabilities	4,654,985	4,707,985
Equity
Preferred shares	332,794	447,683
Common shares	3,417	3,264
Additional paid-in capital	4,891,763	4,620,964
Accumulated other comprehensive income	3,313	4,119
Distributions in excess of net income	(2,029,080)	(2,062,787)
Total shareholders' equity	3,202,207	3,013,243
Noncontrolling interests	27,003	31,386
Total Equity	3,229,210	3,044,629
Total Liabilities and Equity	7,884,195	7,752,614
Duke Realty Limited Partnership [Member]
ASSETS
Land and improvements	1,477,680	1,438,007
Buildings and tenant improvements	5,640,103	5,531,726
Construction in progress	384,807	256,895
Investments in and advances to unconsolidated companies	316,015	342,947
Undeveloped land	542,490	590,052
Real estate investment property, at cost, total	8,361,095	8,159,627
Accumulated depreciation	(1,464,968)	(1,368,406)
Net real estate investments	6,896,127	6,791,221
Real estate investments and other assets held-for-sale	35,414	57,466
Cash and cash equivalents	66,132	19,275
Accounts receivable, net of allowance	32,416	26,173
Straight-line rent receivable, net of allowance	131,209	118,251
Receivables on construction contracts, including retentions	30,446	19,209
Deferred financing costs, net of accumulated amortization	28,425	36,250
Deferred leasing and other costs, net of accumulated amortization	441,338	466,979
Escrow deposits and other assets	222,688	217,790
Total Assets	7,884,195	7,752,614
LIABILITIES AND EQUITY
Secured debt	1,003,851	1,100,124
Unsecured debt	3,064,696	3,066,252
Unsecured line of credit	140,000	88,000
Long-term debt, total	4,208,547	4,254,376
Liabilities related to real estate investments held-for-sale	705	2,075
Construction payables and amounts due subcontractors, including retentions	93,080	69,380
Accrued real estate taxes	103,573	74,696
Accrued interest	34,086	52,824
Other accrued expenses	45,597	67,739
Other liabilities	121,249	142,589
Tenant security deposits and prepaid rents	48,392	44,550
Total Liabilities	4,655,229	4,708,229
Equity
Common equity	2,870,038	2,565,370
Preferred equity	332,785	447,683
General Partners' equity	3,202,823	3,013,053
Limited Partners' common equity	20,625	20,158
Accumulated other comprehensive income	3,313	4,119
Total partners' equity	3,226,761	3,037,330
Noncontrolling interests	2,205	7,055
Total Equity	3,228,966	3,044,385
Total Liabilities and Equity	$ 7,884,195	$ 7,752,614