Discontinued Operations (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
Dec. 31, 2014 property	Dec. 31, 2013 property
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Number of centers sold	26wri_NumberOfRealEstatePropertiesSold
Number of properties held for sale	1	8
Property held for sale	$ 9.4us-gaap_RealEstateHeldforsale	$ 155.0us-gaap_RealEstateHeldforsale
Property held for sale, accumulated depreciation		32.4
Gross property included in discontinued operations		68.6
Accumulated depreciation for property included in discontinued operations		$ 13.2
Discontinued Operations [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Number of centers sold	12	20
Number of properties held for sale		8
Discontinued Operations [Member] \| California [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Number of centers sold		1
Discontinued Operations [Member] \| Florida [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Number of centers sold	2	3
Number of properties held for sale		2
Discontinued Operations [Member] \| Georgia [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Number of centers sold	3
Number of properties held for sale		3
Discontinued Operations [Member] \| Louisiana [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Number of centers sold	2
Discontinued Operations [Member] \| Nevada [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Number of centers sold		1
Discontinued Operations [Member] \| New Mexico [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Number of centers sold		2
Discontinued Operations [Member] \| North Carolina [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Number of centers sold	2	3
Number of properties held for sale		1
Discontinued Operations [Member] \| Tennessee [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Number of centers sold		1
Discontinued Operations [Member] \| Texas [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Number of centers sold	3	9
Number of properties held for sale		2
Center Sold Not Including Held For Sale [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Number of centers sold	4

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Carrying amount as of the balance sheet date of investments in land and buildings held for sale, excluding real estate considered to be inventory of the entity.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 944

-SubTopic 210

-Section S99

-Paragraph 1

-Subparagraph (SX 210.7-03.1(f))

-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

+ Details

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- Definition

For the disposal group, including a component of the entity (discontinued operation), the accumulated depreciation value of real estate investment property that are held by an entity for use in the production or supply of goods and services, for rental to others, or for administrative purposes and that are expected to provide economic benefit for more than one year. Examples include land, buildings, machinery and equipment, and other types of furniture and equipment including, but not limited to, office equipment, furniture and fixtures, and computer equipment and software.

+ References

No definition available.

+ Details

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- Definition

For the disposal group, including a component of the entity (discontinued operation), carrying value of real estate investment property that are held by an entity for use in the production or supply of goods and services, for rental to others, or for administrative purposes and that are expected to provide economic benefit for more than one year. Examples include land, buildings, machinery and equipment, and other types of furniture and equipment including, but not limited to, office equipment, furniture and fixtures, and computer equipment and software.

+ References

No definition available.

+ Details

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- Definition

The number of real estate properties, buildings or undeveloped land parcels held for sale in the period.

+ References

No definition available.

+ Details

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- Definition

The number of real estate properties, buildings or undeveloped land parcels sold during the period.

+ References

No definition available.

+ Details

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- Definition

Real Estate Held For Sale, Accumulated Depreciation

+ References

No definition available.

+ Details

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