We believe that providing EBITDA, Adjusted EBITDA, EBIT and Adjusted EBIT to investors has economic substance as these measures provide important supplemental information of our performance to investors and permits investors and management to evaluate the core operating performance of our business without regard to interest, taxes and depreciation and amortization and the effects of impairment, restructuring costs, certain pension plan expenses, OPEB curtailment gains, purchase accounting inventory adjustments, certain share based compensation, discontinued operations, gains/losses on extinguishment of debt, major scheduled turnaround expenses, FIFO adjustments and unrealized gains/losses on energy segment derivatives and certain other non-operational charges. Additionally, we believe this information is frequently used by securities analysts, investors and other interested parties in the evaluation of companies that have issued debt. Management uses, and believes that investors benefit from referring to these non-GAAP financial measures in assessing our operating results, as well as in planning, forecasting and analyzing future periods. Adjusting earnings for these charges allows investors to evaluate our performance from period to period, as well as our peers, without the effects of certain items that may vary depending on accounting methods and the book value of assets. Additionally, EBITDA, Adjusted EBITDA, EBIT and Adjusted EBIT present meaningful measures of corporate performance exclusive of our capital structure and the method by which assets were acquired and financed.
EBITDA, Adjusted EBITDA, EBIT and Adjusted EBIT have limitations as analytical tools, and you should not consider them in isolation, or as substitutes for analysis of our results as reported under generally accepted accounting principles in the United States, or U.S. GAAP. For example, EBITDA, Adjusted EBITDA, EBIT and Adjusted EBIT:
- do not reflect our cash expenditures, or future requirements for capital expenditures, or contractual commitments;
- do not reflect changes in, or cash requirements for, our working capital needs; and
- do not reflect the significant interest expense, or the cash requirements necessary to service interest or principal payments on our debt.
Although depreciation and amortization are non-cash charges, the assets being depreciated or amortized often will have to be replaced in the future, and EBITDA and Adjusted EBITDA do not reflect any cash requirements for such replacements. Other companies in the industries in which we operate may calculate EBITDA, Adjusted EBITDA, EBIT and Adjusted EBIT differently than we do, limiting their usefulness as comparative measures. In addition, EBITDA, Adjusted EBITDA, EBIT and Adjusted EBIT do not reflect the impact of earnings or charges resulting from matters we consider not to be indicative of our ongoing operations.