Document and Entity Information Document - USD ($)	12 Months Ended
	Dec. 31, 2020	Feb. 17, 2021	Jun. 30, 2020	Dec. 31, 2019
Entity Information [Line Items]
Document Type	10-K
Document Annual Report	true
Current Fiscal Year End Date	--12-31
Document Period End Date	Dec. 31, 2020
Document Transition Report	false
Entity File Number	1-9044
Entity Incorporation, State or Country Code	IN
Entity Tax Identification Number	35-1740409
Entity Address, Address Line One	8711 River Crossing Boulevard
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 Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
ICFR Auditor Attestation Flag	true
Entity Shell Company	false
Entity Public Float			$ 13,190,000,000
Common Stock, Par or Stated Value Per Share	$ 0.01			$ 0.01
Entity Common Stock, Shares Outstanding		373,765,851
Entity Registrant Name	DUKE REALTY CORPORATION
Entity Central Index Key	0000783280
Entity Emerging Growth Company	false
Entity Small Business	false
Document Fiscal Year Focus	2020
Document Fiscal Period Focus	FY
Amendment Flag	false
Duke Realty Limited Partnership [Member]
Entity Information [Line Items]
Document Type	10-K
Current Fiscal Year End Date	--12-31
Document Period End Date	Dec. 31, 2020
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Filer Category	Non-accelerated Filer
ICFR Auditor Attestation Flag	true
Entity Shell Company	false
Entity Registrant Name	DUKE REALTY LIMITED PARTNERSHIP
Entity Central Index Key	0001003410
Entity Emerging Growth Company	false
Document Fiscal Year Focus	2020
Document Fiscal Period Focus	FY
Amendment Flag	false