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The Company analyzes its performance on a net income basis in accordance with accounting principles generally accepted in the United States, as well as on an operating basis before merger and restructuring-related items referred to as "operating earnings." Operating earnings are presented as supplemental information to enhance the reader's understanding of, and highlight trends in, the Company's financial results excluding the impact of merger and restructuring-related items of specific business acquisitions and restructuring activities. Operating earnings should not be viewed as a substitute for net income and earnings per share as determined in accordance with accounting principles generally accepted in the United States. Merger and restructuring-related items excluded from net income to derive operating earnings may be significant and may not be comparable to other companies. |