Basis of Presentation	3 Months Ended
Mar. 31, 2013
Basis of Presentation [Abstract]
Basis of Presentation	BASIS OF PRESENTATION Health Net, Inc. prepared the accompanying unaudited consolidated financial statements following the rules and regulations of the Securities and Exchange Commission ("SEC") for interim reporting. In this Quarterly Report on Form 10-Q, unless the context otherwise requires, the terms “Company,” “Health Net,” “we,” “us,” and “our” refer to Health Net, Inc. and its subsidiaries. As permitted under those rules and regulations, certain notes or other financial information that are normally required by accounting principles generally accepted in the United States of America ("GAAP") have been condensed or omitted if they substantially duplicate the disclosures contained in the annual audited financial statements. The accompanying unaudited consolidated financial statements should be read together with the audited consolidated financial statements and related notes included in our Annual Report on Form 10-K for the year ended December 31, 2012 ("Form 10-K"). We are responsible for the accompanying unaudited consolidated financial statements. These consolidated financial statements include all normal and recurring adjustments that are considered necessary for the fair presentation of our financial position and operating results in accordance with GAAP. In accordance with GAAP, we make certain estimates and assumptions that affect the reported amounts. Actual results could differ from those estimates and assumptions. In addition, revenues, expenses, assets and liabilities can vary during each quarter of the year. Therefore, the results and trends in these interim financial statements may not be indicative of those for the full year. On April 1, 2012, we completed the sale of the business operations of our Medicare stand-alone Prescription Drug Plan business ("Medicare PDP business") to Pennsylvania Life Insurance Company, a subsidiary of CVS Caremark Corporation ("CVS Caremark"). As a result of the sale, the operating results of our Medicare PDP business, previously reported within our Western Region Operations reportable segment, have been reclassified as discontinued operations in our consolidated statements of operations for the three months ended March 31, 2012. See Note 3 for more information on the sale of our Medicare PDP business.

BASIS OF PRESENTATION

Health Net, Inc. prepared the accompanying unaudited consolidated financial statements following the rules and regulations of the Securities and Exchange Commission ("SEC") for interim reporting. In this Quarterly Report on Form 10-Q, unless the context otherwise requires, the terms “Company,” “Health Net,” “we,” “us,” and “our” refer to Health Net, Inc. and its subsidiaries. As permitted under those rules and regulations, certain notes or other financial information that are normally required by accounting principles generally accepted in the United States of America ("GAAP") have been condensed or omitted if they substantially duplicate the disclosures contained in the annual audited financial statements. The accompanying unaudited consolidated financial statements should be read together with the audited consolidated financial statements and related notes included in our Annual Report on Form 10-K for the year ended December 31, 2012 ("Form 10-K").

We are responsible for the accompanying unaudited consolidated financial statements. These consolidated financial statements include all normal and recurring adjustments that are considered necessary for the fair presentation of our financial position and operating results in accordance with GAAP. In accordance with GAAP, we make certain estimates and assumptions that affect the reported amounts. Actual results could differ from those estimates and assumptions. In addition, revenues, expenses, assets and liabilities can vary during each quarter of the year. Therefore, the results and trends in these interim financial statements may not be indicative of those for the full year.

On April 1, 2012, we completed the sale of the business operations of our Medicare stand-alone Prescription Drug Plan business ("Medicare PDP business") to Pennsylvania Life Insurance Company, a subsidiary of CVS Caremark Corporation ("CVS Caremark"). As a result of the sale, the operating results of our Medicare PDP business, previously reported within our Western Region Operations reportable segment, have been reclassified as discontinued operations in our consolidated statements of operations for the three months ended March 31, 2012. See Note 3 for more information on the sale of our Medicare PDP business.