Area of a real estate property.

No definition available.

Name:	us-gaap_AreaOfRealEstateProperty
Namespace Prefix:	us-gaap_
Data Type:	num:areaItemType
Balance Type:	na
Period Type:	instant

- Definition

The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 323
-SubTopic 10
-Section 50
-Paragraph 3
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=114001798&loc=d3e33918-111571

+ Details

Name:	us-gaap_EquityMethodInvestmentOwnershipPercentage
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

The number of real estate properties owned as of the balance sheet date.

+ References

No definition available.

+ Details

Name:	us-gaap_NumberOfRealEstateProperties
Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Definition

Cash received for the sale of real estate that is not part of an investing activity during the current period.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 12
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3179-108585

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event.

+ References

No definition available.

+ Details

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Balance Type:	na
Period Type:	duration

- Details

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Namespace Prefix:
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Balance Type:
Period Type:

- Details

Name:	us-gaap_DisposalGroupClassificationAxis=us-gaap_DisposalGroupHeldforsaleNotDiscontinuedOperationsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis=us-gaap_LandMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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Namespace Prefix:
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Balance Type:
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- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
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- Details

Name:	srt_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis=us-gaap_BuildingMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis=dre_TrailerStorageMember
Namespace Prefix:
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Subsequent Events (Property Dispositions) (Details) $ in Millions	Jul. 27, 2021 USD ($) buildings	Jul. 22, 2021 USD ($) a buildings	Jun. 30, 2021 a entities buildings
Subsequent Event [Line Items]
Number of Real Estate Properties \| entities			3
Equity Method Investment, Ownership Percentage			20.00%
Subsequent Event [Member]
Subsequent Event [Line Items]
Equity Method Investment, Ownership Percentage	20.00%
Disposal Group, Held-for-sale, Not Discontinued Operations
Subsequent Event [Line Items]
Number of Real Estate Properties			23
Disposal Group, Held-for-sale, Not Discontinued Operations \| Land
Subsequent Event [Line Items]
Area of Real Estate Property \| a			15.0
Disposal Group, Held-for-sale, Not Discontinued Operations \| Subsequent Event [Member]
Subsequent Event [Line Items]
Number of Real Estate Properties		14
Proceeds from Sale of Real Estate \| $		$ 290.0
Disposal Group, Held-for-sale, Not Discontinued Operations \| Subsequent Event [Member] \| Land
Subsequent Event [Line Items]
Area of Real Estate Property \| a		15.0
Major Customer \| Disposal Group, Held-for-sale, Not Discontinued Operations
Subsequent Event [Line Items]
Number of Real Estate Properties			9
Major Customer \| Disposal Group, Held-for-sale, Not Discontinued Operations \| Tranche 1 \| Subsequent Event [Member]
Subsequent Event [Line Items]
Number of Real Estate Properties	3
Proceeds from Sale of Real Estate \| $	$ 141.0
Major Customer \| Disposal Group, Held-for-sale, Not Discontinued Operations \| Tranche 1 \| Subsequent Event [Member] \| Building
Subsequent Event [Line Items]
Number of Real Estate Properties	2
Major Customer \| Disposal Group, Held-for-sale, Not Discontinued Operations \| Tranche 1 \| Subsequent Event [Member] \| Trailer Storage
Subsequent Event [Line Items]
Number of Real Estate Properties	1