Segment Data Segment Data (Policies)

3 Months Ended

Mar. 31, 2019

Segment Reporting [Abstract]

Segment Reporting, Policy

We aggregate our operating units into three reportable segments: refining, logistics and retail.

Included in our corporate, other and elimination segment are the following: our corporate activities; results of certain immaterial operating segments, including our Canadian crude trading operations (as discussed in Note 11); Alon's asphalt terminal operations acquired as part of the Delek/Alon Merger and subsequently substantially disposed in the second quarter of 2018 (see Note 7 for further discussion); the California Discontinued Entities which were acquired as part of the Delek/Alon Merger and subsequently disposed over the first seven months of 2018 (see Note 7 for further discussion); and intercompany eliminations.

Decisions concerning the allocation of resources and assessment of operating performance are made based on this segmentation. Management measures the operating performance of each of the reportable segments based on the segment contribution margin. Segment contribution margin is defined as net revenues less cost of materials and other and operating expenses, excluding depreciation and amortization. Operations that are not specifically included in the reportable segments are included in the corporate and other category, which primarily consists of net revenues, operating costs and expenses, depreciation and amortization expense and interest income and expense associated with our discontinued operations and with our corporate headquarters.

Property, Plant and Equipment, Policy

n accordance with Accounting Standards Codification ("ASC") 360, Property, Plant and Equipment ("ASC 360"), Delek evaluates the realizability of property, plant and equipment as events occur that might indicate potential impairment.