Dispositions, Acquisition, and Developments	12 Months Ended
Dec. 31, 2016
Acquisition, Redevelopments, and Developments [Abstract]
Dispositions, Acquisition, and Development [Text Block]	Acquisitions, Dispositions, Redevelopments, Developments, and Service Agreement Acquisitions Country Club Plaza In March 2016, a joint venture that the Company formed with The Macerich Company acquired Country Club Plaza, a mixed-use retail and office property in Kansas City, Missouri, from Highwood Properties for $660 million ($330 million at TRG's share) in cash, excluding transaction costs. The Company has a 50% ownership interest in the center, which is jointly managed by both companies. The Company's ownership interest in the center is accounted for as an Unconsolidated Joint Venture under the equity method. The joint venture determined the fair value of assets acquired and liabilities assumed upon acquisition. Also, in March 2016, a 10-year, $320 million ($160 million at TRG's share) non-recourse financing was completed for this center. The proceeds from the financing were distributed to the joint venture partners based on the partnership agreement ownership percentages. Purchase of U.S. Headquarters Building In February 2014, the Company purchased the U.S. headquarters building located in Bloomfield Hills, Michigan for $16.1 million from an affiliate of the Taubman family. In exchange for the building, the Company assumed the $17.4 million, 5.90% fixed rate loan on the building, issued 1,431 Operating Partnership units (and a corresponding number of shares of Series B Preferred Stock), and received $1.4 million in escrowed and other cash from the affiliate. In March 2015, the Company refinanced the loan on the building (Note 8). Dispositions Sale of Centers to Starwood In October 2014, the Company completed the disposition of seven shopping centers to an affiliate of the Starwood Capital Group (Starwood). The following centers (Sale Centers) were sold: MacArthur Center in Norfolk, Virginia, Stony Point Fashion Park in Richmond, Virginia, Northlake Mall in Charlotte, North Carolina, The Mall at Wellington Green in Wellington, Florida, The Shops at Willow Bend in Plano, Texas, The Mall at Partridge Creek in Clinton Township, Michigan, and Fairlane Town Center in Dearborn, Michigan. In 2014, the Company early adopted ASU No. 2014-08, "Reporting Discontinued Operations and Disclosures of Disposals of Components of an Entity" issued by the FASB. ASU No. 2014-08 changes the definition of a discontinued operation to include only those disposals of components of an entity that represent a strategic shift that has (or will have) a major effect on an entity's operations and financial results. Therefore, the results of the seven centers are in the Company's continuing operations prior to the October 2014 sale. In connection with the sale, the Company received consideration of $1.4 billion. The proceeds were used to prepay or defease $623 million of property-level debt and accrued interest and to pay $51.2 million of transaction and debt extinguishment costs. The net cash proceeds were used to pay $424.3 million to shareholders and unitholders as a special dividend and distribution (Note 3). The debt extinguished consisted of four loans secured by Northlake Mall, The Mall at Wellington Green, MacArthur Center, and The Mall at Partridge Creek. The Company recognized a gain of $629.7 million ($606.2 million at TRG's beneficial share) in 2014 as a result of the disposition of the Sale Centers. In addition, the Company recorded debt extinguishment costs of $36.4 million, ($36.0 million at TRG's beneficial share) which were classified as Nonoperating Income (Expense) on the Consolidated Statement of Operations and Comprehensive Income. In 2014, the Company incurred $7.8 million of expenses ($7.4 million at TRG's beneficial share) related to the discontinuation of hedge accounting on the swap previously designated to hedge the MacArthur Center note payable. In addition, the Company incurred $3.3 million of disposition costs related to the Sale Centers. These expenses were included in Nonoperating Income (Expense) on the Consolidated Statement of Operations and Comprehensive Income. As a result of the sale, the Company underwent a restructuring plan to reduce its workforce across various areas of the organization. In 2014, the Company incurred $3.7 million of expenses related to the reduction in workforce. These expenses were classified as Restructuring Charge on the Consolidated Statement of Operations and Comprehensive Income. As of December 31, 2016, all of the restructuring costs have been paid. International Plaza In January 2014, the Company sold a total of 49.9% of the Company's interests in the entity that owns International Plaza, including certain governance rights, for $499 million (excluding transaction costs), which consisted of $337 million of cash and approximately $162 million of beneficial interest in debt. The Company's ownership in the center decreased to a noncontrolling 50.1% interest, which is accounted for under the equity method subsequent to the disposition. During 2014, a gain of $368 million (net of tax of $9.7 million) was recognized as a result of the sale. In September 2015, an adjustment of $0.4 million was made, reducing the tax recognized as a result of the sale. Arizona Mills/Oyster Bay In January 2014, the Company completed the sale of its 50% interest in Arizona Mills, an Unconsolidated Joint Venture, and land in Syosset, New York related to the former Oyster Bay project, to Simon Property Group (SPG). The consideration, excluding transaction costs, consisted of $60 million of cash and 555,150 partnership units in Simon Property Group Limited Partnership. The number of partnership units received was determined based on a value of $154.91 per unit. The fair value of the partnership units recognized for accounting purposes was $77.7 million, after considering the one-year restriction on the sale of these partnership units (Note 17). The number of partnership units subsequently increased to 590,124, in lieu of the Company's participation in a distribution of certain partnership units of another entity by SPG and Simon Property Group Limited Partnership. The increase in the number of partnership units was neutral to the market value of the Company's holdings as of the transaction date. As a result of the sale, the Company was relieved of its $84 million share of the $167 million mortgage loan outstanding on Arizona Mills at the time of the sale. A gain of $109 million was recognized as a result of the transaction. In December 2016, the Company converted 250,000 of these partnership units into SPG common shares. See Note 7 for additional information regarding this conversion. The Company's investment in the SPG common shares and the remaining investment in the partnership units are classified within Deferred Charges and Other Assets on the Consolidated Balance Sheet. U.S. Redevelopments and Development Redevelopments The Company has ongoing redevelopment projects at Beverly Center and The Mall at Green Hills, which are expected to be completed in 2018 and 2019, respectively. In total, these two redevelopment projects are expected to cost approximately $700 million. As of December 31, 2016, the Company's total capitalized costs related to these redevelopment projects were $182.6 million. International Market Place International Market Place, a 0.3 million square foot center in Waikiki, Honolulu, Hawaii, opened in August 2016. The center is anchored by Saks Fifth Avenue. The Company owns a 93.5% interest in the project, which is subject to a participating ground lease. The Company is funding all costs of the development. Asia Development CityOn.Xi'an The Company has a joint venture with Wangfujing Group Co., Ltd (Wangfujing), one of China's largest department store chains, which owns and manages an approximately 1.0 million square foot shopping center, CityOn.Xi'an, located at Xi'an Saigao City Plaza, a large-scale mixed-use development in Xi'an, China. The shopping center opened in April 2016. Also in April 2016, the joint venture effectively acquired the 40% noncontrolling interest in the project for approximately $150 million, increasing the partnership's interest to 100%. The Company's effective ownership in the center is 50% and its share of the purchase price for the additional interest was approximately $75 million. This investment is classified within Investment in Unconsolidated Joint Ventures on the Consolidated Balance Sheet. CityOn.Zhengzhou The Company also has a second joint venture with Wangfujing which owns a majority interest in and will manage an approximately 1.0 million square foot multi-level shopping center, CityOn.Zhengzhou, under construction in Zhengzhou, China. The center is scheduled to open in March 2017. In July 2016, the Company acquired an additional 17% interest in the project. As a result of the acquisition, the Company's effective ownership in the center is 49%. As of December 31, 2016, the Company's share of total project costs were $156.0 million, which was decreased by $10.1 million for the change in exchange rates. This investment is classified within Investment in Unconsolidated Joint Ventures on the Consolidated Balance Sheet. Starfield Hanam The Company's joint venture with Shinsegae Group, one of South Korea's largest retailers, owns and manages an approximately 1.7 million square foot shopping center, Starfield Hanam, located in Hanam, South Korea. The shopping center opened in September 2016. The Company has partnered with a major institution in Asia for a 49% ownership interest in Starfield Hanam. The institutional partner owns 14.7% of the project, bringing the Company's effective ownership to 34.3%. This investment is classified within Investment in Unconsolidated Joint Ventures on the Consolidated Balance Sheet. Service Agreement The Shops at Crystals In April 2016, the third party leasing agreement for The Shops at Crystals was terminated in connection with a change in ownership of the center. As a result, the Company recognized management, leasing, and development services revenue for the lump sum payment of $21.7 million received in May 2016 in connection with the termination.

Acquisitions, Dispositions, Redevelopments, Developments, and Service Agreement

Acquisitions

Country Club Plaza

In March 2016, a joint venture that the Company formed with The Macerich Company acquired Country Club Plaza, a mixed-use retail and office property in Kansas City, Missouri, from Highwood Properties for $660 million ($330 million at TRG's share) in cash, excluding transaction costs. The Company has a 50% ownership interest in the center, which is jointly managed by both companies. The Company's ownership interest in the center is accounted for as an Unconsolidated Joint Venture under the equity method. The joint venture determined the fair value of assets acquired and liabilities assumed upon acquisition. Also, in March 2016, a 10-year, $320 million ($160 million at TRG's share) non-recourse financing was completed for this center. The proceeds from the financing were distributed to the joint venture partners based on the partnership agreement ownership percentages.

Purchase of U.S. Headquarters Building

In February 2014, the Company purchased the U.S. headquarters building located in Bloomfield Hills, Michigan for $16.1 million from an affiliate of the Taubman family. In exchange for the building, the Company assumed the $17.4 million, 5.90% fixed rate loan on the building, issued 1,431 Operating Partnership units (and a corresponding number of shares of Series B Preferred Stock), and received $1.4 million in escrowed and other cash from the affiliate. In March 2015, the Company refinanced the loan on the building (Note 8).

Dispositions

Sale of Centers to Starwood

In October 2014, the Company completed the disposition of seven shopping centers to an affiliate of the Starwood Capital Group (Starwood). The following centers (Sale Centers) were sold: MacArthur Center in Norfolk, Virginia, Stony Point Fashion Park in Richmond, Virginia, Northlake Mall in Charlotte, North Carolina, The Mall at Wellington Green in Wellington, Florida, The Shops at Willow Bend in Plano, Texas, The Mall at Partridge Creek in Clinton Township, Michigan, and Fairlane Town Center in Dearborn, Michigan. In 2014, the Company early adopted ASU No. 2014-08, "Reporting Discontinued Operations and Disclosures of Disposals of Components of an Entity" issued by the FASB. ASU No. 2014-08 changes the definition of a discontinued operation to include only those disposals of components of an entity that represent a strategic shift that has (or will have) a major effect on an entity's operations and financial results. Therefore, the results of the seven centers are in the Company's continuing operations prior to the October 2014 sale.

In connection with the sale, the Company received consideration of $1.4 billion. The proceeds were used to prepay or defease $623 million of property-level debt and accrued interest and to pay $51.2 million of transaction and debt extinguishment costs. The net cash proceeds were used to pay $424.3 million to shareholders and unitholders as a special dividend and distribution (Note 3). The debt extinguished consisted of four loans secured by Northlake Mall, The Mall at Wellington Green, MacArthur Center, and The Mall at Partridge Creek.

The Company recognized a gain of $629.7 million ($606.2 million at TRG's beneficial share) in 2014 as a result of the disposition of the Sale Centers. In addition, the Company recorded debt extinguishment costs of $36.4 million, ($36.0 million at TRG's beneficial share) which were classified as Nonoperating Income (Expense) on the Consolidated Statement of Operations and Comprehensive Income.

In 2014, the Company incurred $7.8 million of expenses ($7.4 million at TRG's beneficial share) related to the discontinuation of hedge accounting on the swap previously designated to hedge the MacArthur Center note payable. In addition, the Company incurred $3.3 million of disposition costs related to the Sale Centers. These expenses were included in Nonoperating Income (Expense) on the Consolidated Statement of Operations and Comprehensive Income.

As a result of the sale, the Company underwent a restructuring plan to reduce its workforce across various areas of the organization. In 2014, the Company incurred $3.7 million of expenses related to the reduction in workforce. These expenses were classified as Restructuring Charge on the Consolidated Statement of Operations and Comprehensive Income. As of December 31, 2016, all of the restructuring costs have been paid.

International Plaza

In January 2014, the Company sold a total of 49.9% of the Company's interests in the entity that owns International Plaza, including certain governance rights, for $499 million (excluding transaction costs), which consisted of $337 million of cash and approximately $162 million of beneficial interest in debt. The Company's ownership in the center decreased to a noncontrolling 50.1% interest, which is accounted for under the equity method subsequent to the disposition. During 2014, a gain of $368 million (net of tax of $9.7 million) was recognized as a result of the sale. In September 2015, an adjustment of $0.4 million was made, reducing the tax recognized as a result of the sale.

Arizona Mills/Oyster Bay

In January 2014, the Company completed the sale of its 50% interest in Arizona Mills, an Unconsolidated Joint Venture, and land in Syosset, New York related to the former Oyster Bay project, to Simon Property Group (SPG). The consideration, excluding transaction costs, consisted of $60 million of cash and 555,150 partnership units in Simon Property Group Limited Partnership. The number of partnership units received was determined based on a value of $154.91 per unit. The fair value of the partnership units recognized for accounting purposes was $77.7 million, after considering the one-year restriction on the sale of these partnership units (Note 17). The number of partnership units subsequently increased to 590,124, in lieu of the Company's participation in a distribution of certain partnership units of another entity by SPG and Simon Property Group Limited Partnership. The increase in the number of partnership units was neutral to the market value of the Company's holdings as of the transaction date. As a result of the sale, the Company was relieved of its $84 million share of the $167 million mortgage loan outstanding on Arizona Mills at the time of the sale. A gain of $109 million was recognized as a result of the transaction.

In December 2016, the Company converted 250,000 of these partnership units into SPG common shares. See Note 7 for additional information regarding this conversion. The Company's investment in the SPG common shares and the remaining investment in the partnership units are classified within Deferred Charges and Other Assets on the Consolidated Balance Sheet.

U.S. Redevelopments and Development

Redevelopments

The Company has ongoing redevelopment projects at Beverly Center and The Mall at Green Hills, which are expected to be completed in 2018 and 2019, respectively. In total, these two redevelopment projects are expected to cost approximately $700 million. As of December 31, 2016, the Company's total capitalized costs related to these redevelopment projects were $182.6 million.

International Market Place

International Market Place, a 0.3 million square foot center in Waikiki, Honolulu, Hawaii, opened in August 2016. The center is anchored by Saks Fifth Avenue. The Company owns a 93.5% interest in the project, which is subject to a participating ground lease. The Company is funding all costs of the development.

Asia Development

CityOn.Xi'an

The Company has a joint venture with Wangfujing Group Co., Ltd (Wangfujing), one of China's largest department store chains, which owns and manages an approximately 1.0 million square foot shopping center, CityOn.Xi'an, located at Xi'an Saigao City Plaza, a large-scale mixed-use development in Xi'an, China. The shopping center opened in April 2016. Also in April 2016, the joint venture effectively acquired the 40% noncontrolling interest in the project for approximately $150 million, increasing the partnership's interest to 100%. The Company's effective ownership in the center is 50% and its share of the purchase price for the additional interest was approximately $75 million. This investment is classified within Investment in Unconsolidated Joint Ventures on the Consolidated Balance Sheet.

CityOn.Zhengzhou

The Company also has a second joint venture with Wangfujing which owns a majority interest in and will manage an approximately 1.0 million square foot multi-level shopping center, CityOn.Zhengzhou, under construction in Zhengzhou, China. The center is scheduled to open in March 2017. In July 2016, the Company acquired an additional 17% interest in the project. As a result of the acquisition, the Company's effective ownership in the center is 49%. As of December 31, 2016, the Company's share of total project costs were $156.0 million, which was decreased by $10.1 million for the change in exchange rates. This investment is classified within Investment in Unconsolidated Joint Ventures on the Consolidated Balance Sheet.

Starfield Hanam

The Company's joint venture with Shinsegae Group, one of South Korea's largest retailers, owns and manages an approximately 1.7 million square foot shopping center, Starfield Hanam, located in Hanam, South Korea. The shopping center opened in September 2016. The Company has partnered with a major institution in Asia for a 49% ownership interest in Starfield Hanam. The institutional partner owns 14.7% of the project, bringing the Company's effective ownership to 34.3%. This investment is classified within Investment in Unconsolidated Joint Ventures on the Consolidated Balance Sheet.

Service Agreement

The Shops at Crystals

In April 2016, the third party leasing agreement for The Shops at Crystals was terminated in connection with a change in ownership of the center. As a result, the Company recognized management, leasing, and development services revenue for the lump sum payment of $21.7 million received in May 2016 in connection with the termination.