SEGMENT INFORMATION The Company has three reportable segments: Composites, Insulation and Roofing. Accounting policies for the segments are the same as those for the Company. The Companys three reportable segments are defined as follows: Composites  The Company manufactures, fabricates and sells glass reinforcements in the form of fiber. Glass reinforcement materials are also used downstream by the Composites segment to manufacture and sell glass fiber products in the form of fabrics, non-wovens and other specialized products. Insulation  Within our Insulation segment, the Company manufactures and sells fiberglass insulation into residential, commercial, industrial and other markets for both thermal and acoustical applications. It also manufactures and sells glass fiber pipe insulation, flexible duct media, bonded and granulated mineral wool insulation, cellular glass insulation and foam insulation used in above- and below-grade construction applications. Roofing  Within our Roofing segment, the Company manufactures and sells residential roofing shingles, oxidized asphalt materials, roofing components used in residential and commercial construction and specialty applications, and synthetic packaging materials. NET SALES The following table summarizes our Net sales by segment and geographic region (in millions). Corporate eliminations (shown below) largely reflect intercompany sales from Composites to Roofing. External customer sales are attributed to geographic region based upon the location from which the product is sold to the external customer. Three Months Ended March 31, 2020 2019 Reportable Segments Composites $ 494 $ 513 Insulation 603 591 Roofing 555 614 Total reportable segments 1,652 1,718 Corporate eliminations (51) (51) NET SALES $ 1,601 $ 1,667 External Customer Sales by Geographic Region United States $ 1,060 $ 1,100 Europe 287 296 Asia-Pacific 128 149 Rest of world 126 122 NET SALES $ 1,601 $ 1,667 EARNINGS BEFORE INTEREST AND TAXES Earnings before interest and taxes (EBIT) by segment consist of net sales less related costs and expenses and are presented on a basis that is used internally for evaluating segment performance. Certain items, such as general corporate expenses or income and certain other expense or income items, are excluded from the internal evaluation of segment performance. Accordingly, these items are not reflected in EBIT for our reportable segments and are included within Corporate, Other and Eliminations. The following table summarizes EBIT by segment (in millions): Three Months Ended March 31, 2020 2019 Reportable Segments Composites $ 44 $ 57 Insulation 39 15 Roofing 64 74 Total reportable segments 147 146 Restructuring (costs) / gains (5) 2 Gains on sales of certain precious metals 10  Goodwill impairment charge (944)  Intangible asset impairment charges (43)  General corporate expense and other (31) (30) Total corporate, other and eliminations (1,013) (28) EBIT $ (866) $ 118 TOTAL ASSETS Total assets for the Insulation segment decreased following $987 million of non-cash impairment charges for goodwill and intangible assets in the three months ended March 31, 2020. Please refer to Note 6, Goodwill and Other Intangible Assets, for information on these charges.