excluding the effects of foreign exchange rates, are calculated by converting the current period’s amounts in local currency to U.S. dollars using average foreign exchange rates for the prior period.
During the first quarter of 2016, the Company sold nine markets in the U.S. and sold its businesses in Turkey and Australia in the second and fourth quarters of 2016, respectively. In addition, during the third quarter of 2017, the Company sold its ownership interest in a joint venture in Canada. The Company presents revenues and OIBDAN, each excluding the effects of foreign exchange rates and the results from the businesses sold, for the consolidated Company and the Company’s segments, in order to facilitate investors’ understanding of operational trends without the impact of fluctuations in foreign currency rates and without the results from the businesses that were sold, as these results will not be included in the Company’s results in current and future periods.
Sincethese non-GAAP financial measures are not calculated in accordance with GAAP, they should not be considered in isolation of, or as a substitute for, the most directly comparable GAAP financial measures as an indicator of operating performance.
The Company provides reconciliations below to the most directly comparable amounts reported under GAAP, including (i) Consolidated OIBDAN and OIBDAN for each segment, to consolidated and segment operating income (loss); (ii) Consolidated and segment OIBDAN, excluding effects of foreign exchange rates and results from businesses sold, to Consolidated and segment operating income (loss); and (iii) Consolidated and segment revenues, excluding effects of foreign exchange rates and results from businesses sold, to Consolidated and segment revenues, in each case for each of the four years ended December 31, 2017, the nine months ended September 30, 2017 and 2018, the twelve months ended September 30, 2018, and the three months ended March 31, June 30 and September 30, 2017 and 2018.
The selected historical supplementalnon-GAAP measures presented below for the twelve months ended September 30, 2018 are derived by adding the historical financial information for the nine months ended September 30, 2018 to the historical financial information for the year ended December 31, 2017 and subtracting the historical financial information for the nine months ended September 30, 2017. Historical results are not necessarily indicative of the results to be expected for future periods and the interim results are not necessarily indicative of the results that may be expected for the full year.