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Background and Basis of Presentation	12 Months Ended
Background and Basis of Presentation	Dec. 31, 2017
Background and Basis of Presentation [Abstract]
Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block]	Background and Basis of Presentation Based in Columbus, Ohio, Hexion Inc. (“Hexion” or the “Company”), serves global industrial markets through a broad range of thermoset technologies, specialty products and technical support for customers in a diverse range of applications and industries. At December 31, 2017, the Company had 52 production and manufacturing facilities, with 22 located in the United States. The Company’s business is organized based on the products offered and the markets served. At December 31, 2017, the Company had three reportable segments: Epoxy, Phenolic and Coating Resins; Forest Products Resins; and Corporate and Other. The Company’s direct parent is Hexion LLC, a holding company and wholly owned subsidiary of Hexion Holdings LLC (“Hexion Holdings”), the ultimate parent entity of Hexion. Hexion Holdings is controlled by investment funds managed by affiliates of Apollo Management Holdings, L.P. (together with Apollo Global Management, LLC and its subsidiaries, “Apollo”). As of December 31, 2017, the Company has elected not to apply push-down accounting of its parent’s basis as a result of the prior combination of Hexion and Momentive Performance Materials Inc. (“MPM”), a former subsidiary of Hexion Holdings.