The Company	12 Months Ended
Dec. 31, 2018
Organization, Consolidation and Presentation of Financial Statements [Abstract]
The Company	The Company Lexington Realty Trust (together with its consolidated subsidiaries, except when the context only applies to the parent entity, the “Company”) is a Maryland statutory real estate investment trust (“REIT”) that owns a diversified portfolio of equity investments in single-tenant commercial properties. As of December 31, 2018, the Company had equity ownership interests in approximately 135 consolidated properties located in 34 states. The properties in which the Company has an interest are primarily net-leased to tenants in various industries. The Company believes it has qualified as a REIT under the Internal Revenue Code of 1986, as amended (the “Code”). Accordingly, the Company will not be subject to federal income tax, provided that distributions to its shareholders equal at least the amount of its REIT taxable income as defined under the Code. The Company is permitted to participate in certain activities from which it was previously precluded in order to maintain its qualification as a REIT, so long as these activities are conducted in entities which elect to be treated as taxable REIT subsidiaries (“TRS”) under the Code. As such, the TRS are subject to federal income taxes on the income from these activities. The Company conducts its operations either directly or indirectly through (1) property owner subsidiaries and lender subsidiaries, which are single purpose entities, (2) an operating partnership, Lepercq Corporate Income Fund L.P. (“LCIF”), in which the Company is the sole unit holder of the general partner and the sole unit holder of the limited partner that holds a majority of the limited partner interests, (3) a wholly-owned TRS, Lexington Realty Advisors, Inc. (“LRA”), and (4) investments in joint ventures. References to “OP Units” refer to units of limited partner interests in LCIF. Property owner subsidiaries are landlords under leases for properties in which the Company has an interest and/or borrowers under loan agreements secured by properties in which the Company has an interest and lender subsidiaries are lenders under loan agreements where the Company made an investment in a loan asset, but in all cases are separate and distinct legal entities. Each property owner subsidiary is a separate legal entity that maintains separate books and records. The assets and credit of each property owner subsidiary with a property subject to a mortgage loan are not available to creditors to satisfy the debt and other obligations of any other person, including any other property owner subsidiary or any other affiliate. Consolidated entities that are not property owner subsidiaries do not directly own any of the assets of a property owner subsidiary (or the general partner, member or managing member of such property owner subsidiary), but merely hold partnership, membership or beneficial interest therein, which interests are subordinate to the claims of such property owner subsidiary's (or its general partner's, member's or managing member's) creditors.

The Company

Lexington Realty Trust (together with its consolidated subsidiaries, except when the context only applies to the parent entity, the “Company”) is a Maryland statutory real estate investment trust (“REIT”) that owns a diversified portfolio of equity investments in single-tenant commercial properties.

As of December 31, 2018, the Company had equity ownership interests in approximately 135 consolidated properties located in 34 states. The properties in which the Company has an interest are primarily net-leased to tenants in various industries.

The Company believes it has qualified as a REIT under the Internal Revenue Code of 1986, as amended (the “Code”). Accordingly, the Company will not be subject to federal income tax, provided that distributions to its shareholders equal at least the amount of its REIT taxable income as defined under the Code. The Company is permitted to participate in certain activities from which it was previously precluded in order to maintain its qualification as a REIT, so long as these activities are conducted in entities which elect to be treated as taxable REIT subsidiaries (“TRS”) under the Code. As such, the TRS are subject to federal income taxes on the income from these activities.

The Company conducts its operations either directly or indirectly through (1) property owner subsidiaries and lender subsidiaries, which are single purpose entities, (2) an operating partnership, Lepercq Corporate Income Fund L.P. (“LCIF”), in which the Company is the sole unit holder of the general partner and the sole unit holder of the limited partner that holds a majority of the limited partner interests, (3) a wholly-owned TRS, Lexington Realty Advisors, Inc. (“LRA”), and (4) investments in joint ventures. References to “OP Units” refer to units of limited partner interests in LCIF. Property owner subsidiaries are landlords under leases for properties in which the Company has an interest and/or borrowers under loan agreements secured by properties in which the Company has an interest and lender subsidiaries are lenders under loan agreements where the Company made an investment in a loan asset, but in all cases are separate and distinct legal entities. Each property owner subsidiary is a separate legal entity that maintains separate books and records. The assets and credit of each property owner subsidiary with a property subject to a mortgage loan are not available to creditors to satisfy the debt and other obligations of any other person, including any other property owner subsidiary or any other affiliate. Consolidated entities that are not property owner subsidiaries do not directly own any of the assets of a property owner subsidiary (or the general partner, member or managing member of such property owner subsidiary), but merely hold partnership, membership or beneficial interest therein, which interests are subordinate to the claims of such property owner subsidiary's (or its general partner's, member's or managing member's) creditors.