Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
ASSETS
Land and improvements	$ 1,383,889	$ 1,412,867
Buildings and tenant improvements	4,815,764	4,986,390
Construction in progress	194,918	246,062
Investments in and advances to unconsolidated companies	341,911	293,650
Undeveloped land	473,562	499,960
Real estate investment property, at cost, total	7,210,044	7,438,929
Accumulated depreciation	(1,176,719)	(1,235,337)
Net real estate investments	6,033,325	6,203,592
Real estate investments and other assets held-for-sale	840,018	725,051
Cash and cash equivalents	17,806	17,922
Accounts receivable, net of allowance	28,961	26,168
Straight-line rent receivable, net of allowance	110,635	109,657
Receivables on construction contracts, including retentions	44,860	36,224
Deferred financing costs, net of accumulated amortization	36,427	38,734
Deferred leasing and other costs, net of accumulated amortization	374,862	387,635
Escrow deposits and other assets	243,610	209,856
Total Assets	7,730,504	7,754,839
LIABILITIES AND EQUITY
Secured debt	877,751	942,478
Unsecured debt	3,113,617	3,364,161
Unsecured line of credit	453,000	106,000
Long-term debt, total	4,444,368	4,412,639
Liabilities related to real estate investments held-for-sale	65,105	59,092
Construction payables and amounts due subcontractors, including retentions	46,723	69,470
Accrued real estate taxes	70,130	76,308
Accrued interest	34,634	55,110
Other accrued expenses	38,766	62,632
Other liabilities	98,532	95,566
Tenant security deposits and prepaid rents	38,063	44,142
Total Liabilities	4,836,321	4,874,959
Equity
Common shares	3,450	3,441
Additional paid-in capital	4,952,319	4,944,800
Accumulated other comprehensive income	2,739	3,026
Distributions in excess of net income	(2,084,810)	(2,090,942)
Total shareholders' equity	2,873,698	2,860,325
Noncontrolling interests	20,485	19,555
Total Equity	2,894,183	2,879,880
Total Liabilities and Equity	7,730,504	7,754,839
Duke Realty Limited Partnership [Member]
ASSETS
Land and improvements	1,383,889	1,412,867
Buildings and tenant improvements	4,815,764	4,986,390
Construction in progress	194,918	246,062
Investments in and advances to unconsolidated companies	341,911	293,650
Undeveloped land	473,562	499,960
Real estate investment property, at cost, total	7,210,044	7,438,929
Accumulated depreciation	(1,176,719)	(1,235,337)
Net real estate investments	6,033,325	6,203,592
Real estate investments and other assets held-for-sale	840,018	725,051
Cash and cash equivalents	17,806	17,922
Accounts receivable, net of allowance	28,961	26,168
Straight-line rent receivable, net of allowance	110,635	109,657
Receivables on construction contracts, including retentions	44,860	36,224
Deferred financing costs, net of accumulated amortization	36,427	38,734
Deferred leasing and other costs, net of accumulated amortization	374,862	387,635
Escrow deposits and other assets	243,610	209,856
Total Assets	7,730,504	7,754,839
LIABILITIES AND EQUITY
Secured debt	877,751	942,478
Unsecured debt	3,113,617	3,364,161
Unsecured line of credit	453,000	106,000
Long-term debt, total	4,444,368	4,412,639
Liabilities related to real estate investments held-for-sale	65,105	59,092
Construction payables and amounts due subcontractors, including retentions	46,723	69,470
Accrued real estate taxes	70,130	76,308
Accrued interest	34,634	55,110
Other accrued expenses	38,943	62,812
Other liabilities	98,532	95,566
Tenant security deposits and prepaid rents	38,063	44,142
Total Liabilities	4,836,498	4,875,139
Equity
Common equity	2,870,782	2,857,119
General Partners' equity	2,870,782	2,857,119
Limited Partners' common equity	18,255	17,289
Accumulated other comprehensive income	2,739	3,026
Total partners' equity	2,891,776	2,877,434
Noncontrolling interests	2,230	2,266
Total Equity	2,894,006	2,879,700
Total Liabilities and Equity	$ 7,730,504	$ 7,754,839