Description of Business	12 Months Ended
Dec. 31, 2014
Description of Business [Abstract]
Description of Business	Description of Business Health Net, Inc. (referred to herein as "Health Net," "the Company," "we," "us," "our" or "HNT") is a publicly traded managed care organization that delivers managed health care services. Together with our subsidiaries, we provide health benefits through our health maintenance organizations ("HMOs"), insured preferred provider organizations ("PPOs"), exclusive provider organization ("EPO"), point of service ("POS") plans and indemnity products, among others, to approximately 6.0 million individuals across the country through group, individual, Medicare, Medicaid ("Medi-Cal" in California), the United States Department of Defense ("Department of Defense" or "DoD"), including TRICARE, and Veterans Affairs programs. Our subsidiaries also offer managed health care products related to behavioral health and prescription drugs. Starting in 2014, we participate in the California Coordinated Care Initiative ("CCI") and provide health care services to individuals that are fully eligible for Medicare and Medi-Cal benefits ("dual eligibles"). Our reportable segments are comprised of Western Region Operations and Government Contracts, each of which is described below. On November 2, 2014, we signed a definitive master services agreement with Cognizant Healthcare Services, LLC, a wholly owned subsidiary of Cognizant Technology Solutions Corporation ("Cognizant") to provide certain services to us. In connection with this agreement, we have also entered into an asset purchase agreement pursuant to which we have agreed to sell certain software assets and related intellectual property we own to Cognizant. The transaction, including the related asset sale (the "Cognizant Transaction"), is subject to receipt of required regulatory approvals. See Note 2 and Note 3 for more information on the Cognizant Transaction. In connection with this Cognizant Transaction, we reviewed our reportable segments and determined that there were no changes to our reportable segments. Effective January 1, 2013, we closed out our Divested Operations and Services segment, which is described below. As a result of entering into a definitive agreement in January 2012 to sell our Medicare stand-alone Prescription Drug Plan ("Medicare PDP") business, we reviewed our reportable segments in the first quarter of 2012. Following this review, all services provided in connection with divested businesses, including those relating to the sale of our Medicare PDP business and the Northeast Sale (as defined below), were reported as part of our Divested Operations and Services reportable segment beginning in the first quarter of 2012. See Note 14 for a discussion of our reportable segments. Our health plan services are provided under our Western Region Operations reportable segment, which includes the operations primarily conducted in California, Arizona, Oregon and Washington for our commercial, Medicare and Medicaid health plans, our health and life insurance companies, our pharmaceutical services subsidiary and certain operations of our behavioral health subsidiaries. Our Government Contracts reportable segment includes our government-sponsored managed care federal contract with the DoD under the TRICARE program in the North Region and other health care, mental health and behavioral health government contracts. On April 1, 2011, we began delivering administrative services under the new T-3 contract for the TRICARE North Region ("T-3 contract"). The T-3 contract for the North Region covers Connecticut, Delaware, Illinois, Indiana, Kentucky (except Fort Campbell), Maine, Maryland, Massachusetts, Michigan, New Hampshire, New Jersey, New York, North Carolina, Ohio, Pennsylvania, Rhode Island, Vermont, Virginia, West Virginia, Wisconsin and the District of Columbia and portions of Iowa and Missouri. The Company provides administrative services to approximately 2.8 million Military Health System ("MHS") eligible individuals under the T-3 contract. In addition to the beneficiaries that we service under the T-3 contract, we administer contracts with the U.S. Department of Veterans Affairs ("VA") to manage community based outpatient clinics in one state covering approximately 3,696 enrollees and provide behavioral health services to military families under the Department of Defense sponsored Military and Family Life Counseling, formerly Military and Family Life Consultant, ("MFLC") program. Our Government Contracts segment also includes the services we provide under the Patient Centered Community Care program (“PC3 Program”) contract we have with the Department of Veterans Affairs (“VA”). See Note 2 under the heading "Government Contracts" for additional information on our T-3 contract for the North Region, the MFLC contract and PC3 Program contract. On April 1, 2012, we completed the sale of the business operations of our Medicare PDP business to Pennsylvania Life Insurance Company, a subsidiary of CVS Caremark Corporation ("CVS Caremark"). Prior to the sale of our Medicare PDP business, our Divested Operations and Services reportable segment included the operations of our businesses that provided administrative and run-out support services to an affiliate of UnitedHealth Group Incorporated ("United") and its affiliates under administrative services and claims servicing agreements in connection with the sale of all of the outstanding shares of capital stock of our health plan subsidiaries that were domiciled and had conducted businesses in Connecticut, New Jersey, New York and Bermuda to United (the "Northeast Sale"). Beginning in the first quarter of 2012, this segment also included the transition-related expenses of our divested Medicare PDP business. As of December 31, 2012, we had substantially completed the administration and run-out of our divested businesses. See Note 2 for additional information on our Divested Operations and Services and Note 3 for more information on the Cognizant Transaction, the sale of our Medicare PDP business and the Northeast Sale.

Description of Business

Health Net, Inc. (referred to herein as "Health Net," "the Company," "we," "us," "our" or "HNT") is a publicly traded managed care organization that delivers managed health care services. Together with our subsidiaries, we provide health benefits through our health maintenance organizations ("HMOs"), insured preferred provider organizations ("PPOs"), exclusive provider organization ("EPO"), point of service ("POS") plans and indemnity products, among others, to approximately 6.0 million individuals across the country through group, individual, Medicare, Medicaid ("Medi-Cal" in California), the United States Department of Defense ("Department of Defense" or "DoD"), including TRICARE, and Veterans Affairs programs. Our subsidiaries also offer managed health care products related to behavioral health and prescription drugs. Starting in 2014, we participate in the California Coordinated Care Initiative ("CCI") and provide health care services to individuals that are fully eligible for Medicare and Medi-Cal benefits ("dual eligibles").

Our reportable segments are comprised of Western Region Operations and Government Contracts, each of which is described below. On November 2, 2014, we signed a definitive master services agreement with Cognizant Healthcare Services, LLC, a wholly owned subsidiary of Cognizant Technology Solutions Corporation ("Cognizant") to provide certain services to us. In connection with this agreement, we have also entered into an asset purchase agreement pursuant to which we have agreed to sell certain software assets and related intellectual property we own to Cognizant. The transaction, including the related asset sale (the "Cognizant Transaction"), is subject to receipt of required regulatory approvals. See Note 2 and Note 3 for more information on the Cognizant Transaction.

In connection with this Cognizant Transaction, we reviewed our reportable segments and determined that there were no changes to our reportable segments. Effective January 1, 2013, we closed out our Divested Operations and Services segment, which is described below. As a result of entering into a definitive agreement in January 2012 to sell our Medicare stand-alone Prescription Drug Plan ("Medicare PDP") business, we reviewed our reportable segments in the first quarter of 2012. Following this review, all services provided in connection with divested businesses, including those relating to the sale of our Medicare PDP business and the Northeast Sale (as defined below), were reported as part of our Divested Operations and Services reportable segment beginning in the first quarter of 2012. See Note 14 for a discussion of our reportable segments.

Our health plan services are provided under our Western Region Operations reportable segment, which includes the operations primarily conducted in California, Arizona, Oregon and Washington for our commercial, Medicare and Medicaid health plans, our health and life insurance companies, our pharmaceutical services subsidiary and certain operations of our behavioral health subsidiaries.

Our Government Contracts reportable segment includes our government-sponsored managed care federal contract with the DoD under the TRICARE program in the North Region and other health care, mental health and behavioral health government contracts. On April 1, 2011, we began delivering administrative services under the new T-3 contract for the TRICARE North Region ("T-3 contract"). The T-3 contract for the North Region covers Connecticut, Delaware, Illinois, Indiana, Kentucky (except Fort Campbell), Maine, Maryland, Massachusetts, Michigan, New Hampshire, New Jersey, New York, North Carolina, Ohio, Pennsylvania, Rhode Island, Vermont, Virginia, West Virginia, Wisconsin and the District of Columbia and portions of Iowa and Missouri. The Company provides administrative services to approximately 2.8 million Military Health System ("MHS") eligible individuals under the T-3 contract. In addition to the beneficiaries that we service under the T-3 contract, we administer contracts with the U.S. Department of Veterans Affairs ("VA") to manage community based outpatient clinics in one state covering approximately 3,696 enrollees and provide behavioral health services to military families under the Department of Defense sponsored Military and Family Life Counseling, formerly Military and Family Life Consultant, ("MFLC") program. Our Government Contracts segment also includes the services we provide under the Patient Centered Community Care program (“PC3 Program”) contract we have with the Department of Veterans Affairs (“VA”). See Note 2 under the heading "Government Contracts" for additional information on our T-3 contract for the North Region, the MFLC contract and PC3 Program contract.

On April 1, 2012, we completed the sale of the business operations of our Medicare PDP business to Pennsylvania Life Insurance Company, a subsidiary of CVS Caremark Corporation ("CVS Caremark"). Prior to the sale of our Medicare PDP business, our Divested Operations and Services reportable segment included the operations of our businesses that provided administrative and run-out support services to an affiliate of UnitedHealth Group Incorporated ("United") and its affiliates under administrative services and claims servicing agreements in connection with the sale of all of the outstanding shares of capital stock of our health plan subsidiaries that were domiciled and had conducted businesses in Connecticut, New Jersey, New York and Bermuda to United (the "Northeast Sale"). Beginning in the first quarter of 2012, this segment also included the transition-related expenses of our divested Medicare PDP business. As of December 31, 2012, we had substantially completed the administration and run-out of our divested businesses. See Note 2 for additional information on our Divested Operations and Services and Note 3 for more information on the Cognizant Transaction, the sale of our Medicare PDP business and the Northeast Sale.