Operating Segments Our revenues are derived from three operating segments: Terminalling and Transportation, Gathering and Processing, and Wholesale. We evaluate the performance of our segments based primarily on segment operating income and net earnings before interest, income taxes, depreciation and amortization expenses (EBITDA). For the purposes of our operating segment disclosure, we present operating income as it is the most comparable measure to the amounts presented in our condensed statements of consolidated operations. Segment operating income includes those revenues and expenses that are directly attributable to management of the respective segment. Certain general and administrative expenses and interest and financing costs are excluded from segment operating income as they are not directly attributable to a specific operating segment. Our Terminalling and Transportation segment consists of pipeline systems, including regulated common carrier refined products pipeline systems and other pipelines, which transport products and crude oil primarily from Marathons refineries to nearby facilities, as well as crude oil and refined products terminals and storage facilities, marine terminals, stand-alone asphalt terminals as well as a 50% interest in PNAC, rail-car unloading facilities, an asphalt trucking operation and a petroleum coke handling and storage facility. Our Gathering and Processing segment consists of crude oil, natural gas, NGLs and produced water gathering systems in the Bakken Shale/Williston Basin area of North Dakota and Montana, the Green River Basin, Uinta Basin, and Vermillion Basin in the states of Utah, Colorado and Wyoming, the Delaware Basin in the Permian Basin area of West Texas and Southern New Mexico, and in the San Juan Basin in the Four Corners area of Northwestern New Mexico. It also consists of the Great Northern Midstream and Fryburg pipelines, crude trucking operations and gas processing and fractionation complexes. Our Wholesale segment includes the operations of several bulk petroleum distribution plants and a fleet of refined product delivery trucks that distribute commercial wholesale petroleum products primarily in Arizona, Colorado, Nevada, New Mexico and Texas. The refined product trucking business delivers a significant portion of the volumes sold by our Wholesale segment. Segment Information (in millions) Three Months Ended March 31, 2019 2018 (a) Revenues Terminalling and Transportation: Terminalling $ 245 $ 199 Pipeline transportation 46 31 Other revenues 2 2 Total Terminalling and Transportation 293 232 Gathering and Processing: NGL sales 122 104 Gas gathering and processing 70 85 Crude oil and water gathering 97 75 Pass-thru and other 32 35 Total Gathering and Processing 321 299 Wholesale: Fuel sales 12 9 Other wholesale 10 8 Total Wholesale 22 17 Intersegment wholesale revenues (6 ) (2 ) Total Revenues $ 630 $ 546 Segment Operating Income Terminalling and Transportation $ 152 $ 104 Gathering and Processing 63 77 Wholesale 5 4 Total Segment Operating Income 220 185 Unallocated general and administrative expenses (9 ) (8 ) Operating Income 211 177 Interest and financing costs, net (61 ) (55 ) Equity in earnings of equity method investments 7 8 Other income, net  1 Net Earnings $ 157 $ 131 Depreciation and Amortization Expenses Terminalling and Transportation $ 36 $ 33 Gathering and Processing 62 53 Wholesale 3 3 Total Depreciation and Amortization Expenses $ 101 $ 89 Capital Expenditures Terminalling and Transportation $ 25 $ 46 Gathering and Processing 97 110 Wholesale  1 Total Capital Expenditures $ 122 $ 157 (a) Adjusted to include the historical results of the Predecessors. See Note 1 for further discussion.