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Description of Business and Basis of Presentation policy (Policies)	9 Months Ended
	Sep. 30, 2014
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Misclassification Correction	We have revised the previously reported condensed consolidated Statement of Cash Flows for the nine months ended September 30, 2013. In prior periods, non-cash purchases of property and equipment were previously included within capital expenditures. The revision increased Net cash used in investing activities and increased Net cash provided by operating activities by $13.8 million for the nine months ended September 30, 2013. We do not believe that these misclassifications were material to the previously reported interim or annual financial statements. The above adjustments had no effect on previously reported Statements of Operations, Statements of Financial Position or Statements of Invested Equity/Stockholders' Equity. The impacted prior periods will be revised as they are presented in future filings.
Use of Estimates	The preparation of our financial statements in conformity with accounting principles generally accepted in the United States of America (“GAAP”) requires management to make estimates, judgments and assumptions that affect the reported amounts of assets and liabilities, disclosure of contingent assets and liabilities at the date of the financial statements, and the reported amount of revenues and expenses during the reporting period. We base our estimates on historical experience and on various other assumptions that are believed to be reasonable under the circumstances, the results of which form the basis for making judgments about the carrying values of assets and liabilities that are not readily apparent from other sources. Actual results may differ from these estimates under different assumptions or conditions.