Organization	3 Months Ended
Mar. 31, 2019
Organization Consolidation And Presentation Of Financial Statements [Abstract]
Organization	Note 1 – Organization Seritage Growth Properties (“Seritage” or the “Company”) was organized in Maryland on June 3, 2015. The Company is a fully-integrated, self-administered, self-managed real estate investment trust (“REIT”) primarily engaged in the real property business through its investment in Seritage Growth Properties, L.P. (the “Operating Partnership”), a Delaware limited partnership that was formed on April 22, 2015. Unless the context otherwise requires, “Seritage” and the “Company” refer to Seritage, the Operating Partnership, and its subsidiaries. On June 11, 2015, Sears Holdings Corporation (“Sears Holdings”) effected a rights offering to Sears Holdings stockholders to purchase common shares of Seritage in order to fund, in part, the $2.7 billion acquisition of (i) 234 of Sears Holdings’ owned properties and one of its ground leased properties (the “Acquired Properties”), and (ii) Sears Holdings’ 50% interests in three joint ventures that collectively owned 28 properties, ground leased one property and leased two properties (the “Acquired JV Properties”). Concurrent with the acquisition, the Company leased back to Sears Holdings space at 224 of the Acquired Properties under a master lease agreement (the “Original Master Lease”) and space at all 31 Acquired JV Properties under multiple master lease agreements (the “Original JV Master Leases”). The rights offering ended on July 2, 2015, and the Company’s Class A common shares were listed on the New York Stock Exchange (“NYSE”) on July 6, 2015. On July 7, 2015, the Company completed the transactions with Sears Holdings and commenced operations. The Company did not have any operations prior to the completion of the rights offering and the transactions with Sears Holdings. On October 15, 2018, Sears Holdings and certain of its affiliates filed voluntary petitions for relief under chapter 11 of title 11 of the United States Code with the United States Bankruptcy Court for the Southern District of New York (the “Bankruptcy Court”). On February 11, 2019, Transform Holdco LLC (“Holdco”), an affiliate of ESL Investments, Inc.(“ESL”), completed the acquisition of an approximately 425-store retail footprint and other assets and component businesses of Sears Holdings on a going-concern basis (the “Holdco Acquisition”). In connection with the Holdco Acquisition, Holdco acquired certain designation rights with respect to certain executory contracts and leases of Sears Holdings, including the Original Master Lease. On February 28, 2019, the Company and certain affiliates of Holdco executed a master lease with respect to 51 Acquired Properties (the “Holdco Master Lease”). The Holdco Master Lease became effective on March 12, 2019, when the Bankruptcy Court issued an order approving the rejection of the Original Master Lease. For accounting purposes, the Holdco Master Lease is treated as a modification to the Original Master Lease. As of March 31, 2019, the Company’s portfolio consisted of interests in 225 properties totaling approximately 35.6 million square feet of gross leasable area (“GLA”), including 198 wholly owned properties totaling approximately 30.8 million square feet of GLA across 46 states and Puerto Rico (the “Wholly Owned Properties), and interests in 27 joint venture properties totaling approximately 4.8 million square feet of GLA across 13 states (the “JV Properties”). As of March 31, 2019, the Company leased space at 51 Wholly Owned Properties to Holdco pursuant to the Holdco Master Lease and space at 19 JV Properties continued to be leased to Sears Holdings pursuant to the Original JV Master Leases. Under the Holdco Master Lease and Original JV Master Leases, the Company has the right to recapture certain space at each property occupied by Holdco and Sears Holdings, respectively, for retenanting or redevelopment purposes. Tenants under the Holdco Master Lease and Original JV Master Leases also have rights to terminate the lease at individual locations subject to certain parameters (see Note 5).

Organization

3 Months Ended

Mar. 31, 2019

Organization Consolidation And Presentation Of Financial Statements [Abstract]

Note 1 – Organization

Seritage Growth Properties (“Seritage” or the “Company”) was organized in Maryland on June 3, 2015. The Company is a fully-integrated, self-administered, self-managed real estate investment trust (“REIT”) primarily engaged in the real property business through its investment in Seritage Growth Properties, L.P. (the “Operating Partnership”), a Delaware limited partnership that was formed on April 22, 2015. Unless the context otherwise requires, “Seritage” and the “Company” refer to Seritage, the Operating Partnership, and its subsidiaries.

On June 11, 2015, Sears Holdings Corporation (“Sears Holdings”) effected a rights offering to Sears Holdings stockholders to purchase common shares of Seritage in order to fund, in part, the $2.7 billion acquisition of (i) 234 of Sears Holdings’ owned properties and one of its ground leased properties (the “Acquired Properties”), and (ii) Sears Holdings’ 50% interests in three joint ventures that collectively owned 28 properties, ground leased one property and leased two properties (the “Acquired JV Properties”). Concurrent with the acquisition, the Company leased back to Sears Holdings space at 224 of the Acquired Properties under a master lease agreement (the “Original Master Lease”) and space at all 31 Acquired JV Properties under multiple master lease agreements (the “Original JV Master Leases”).

The rights offering ended on July 2, 2015, and the Company’s Class A common shares were listed on the New York Stock Exchange (“NYSE”) on July 6, 2015. On July 7, 2015, the Company completed the transactions with Sears Holdings and commenced operations. The Company did not have any operations prior to the completion of the rights offering and the transactions with Sears Holdings.

On October 15, 2018, Sears Holdings and certain of its affiliates filed voluntary petitions for relief under chapter 11 of title 11 of the United States Code with the United States Bankruptcy Court for the Southern District of New York (the “Bankruptcy Court”). On February 11, 2019, Transform Holdco LLC (“Holdco”), an affiliate of ESL Investments, Inc.(“ESL”), completed the acquisition of an approximately 425-store retail footprint and other assets and component businesses of Sears Holdings on a going-concern basis (the “Holdco Acquisition”). In connection with the Holdco Acquisition, Holdco acquired certain designation rights with respect to certain executory contracts and leases of Sears Holdings, including the Original Master Lease. On February 28, 2019, the Company and certain affiliates of Holdco executed a master lease with respect to 51 Acquired Properties (the “Holdco Master Lease”). The Holdco Master Lease became effective on March 12, 2019, when the Bankruptcy Court issued an order approving the rejection of the Original Master Lease. For accounting purposes, the Holdco Master Lease is treated as a modification to the Original Master Lease.

As of March 31, 2019, the Company’s portfolio consisted of interests in 225 properties totaling approximately 35.6 million square feet of gross leasable area (“GLA”), including 198 wholly owned properties totaling approximately 30.8 million square feet of GLA across 46 states and Puerto Rico (the “Wholly Owned Properties), and interests in 27 joint venture properties totaling approximately 4.8 million square feet of GLA across 13 states (the “JV Properties”).

As of March 31, 2019, the Company leased space at 51 Wholly Owned Properties to Holdco pursuant to the Holdco Master Lease and space at 19 JV Properties continued to be leased to Sears Holdings pursuant to the Original JV Master Leases. Under the Holdco Master Lease and Original JV Master Leases, the Company has the right to recapture certain space at each property occupied by Holdco and Sears Holdings, respectively, for retenanting or redevelopment purposes. Tenants under the Holdco Master Lease and Original JV Master Leases also have rights to terminate the lease at individual locations subject to certain parameters (see Note 5).