Acquisitions	3 Months Ended
Mar. 31, 2012
Acquisitions [Abstract]
Acquisitions	3. ACQUISITIONS Effective March 31, 2012, we acquired Arcadian Management Services, Inc., or Arcadian, a Medicare Advantage health maintenance organization (HMO) serving members in 15 U.S. states, increasing Medicare membership and expanding our Medicare footprint and future growth opportunities in these areas. The preliminary allocation of the purchase price resulted in goodwill of $43 million and other intangible assets of $38 million. The goodwill was assigned to the Retail segment and is not deductible for tax purposes. The other intangible assets, which primarily consist of customer contracts and provider contracts, have a weighted average useful life of 9.7 years. The purchase price allocation is preliminary, subject to completion of valuation analyses, including, for example, refining assumptions used to calculate the fair value of other intangible assets. Effective December 30, 2011, we acquired the California-based Medicare Advantage HMO MD Care, Inc., or MD Care, increasing Medicare membership and expanding our Medicare footprint and future growth opportunity in California. The purchase price was not material. On December 6, 2011, we acquired Anvita, Inc., or Anvita, a San Diego-based health care analytics company. The Anvita acquisition provides scalable analytics solutions that produce clinical insights which we expect to enhance our ability to improve the quality and lower the cost of health care for our members and customers. The preliminary allocation of the purchase price resulted in goodwill of $117 million and other intangible assets of $60 million. The goodwill was assigned to the Retail segment and is not deductible for tax purposes. The other intangible assets, which primarily consist of technology and customer contracts, have a weighted average useful life of 6.5 years. The purchase price allocation is preliminary, subject to completion of valuation analyses, including, for example, refining assumptions used to calculate the fair value of other intangible assets. The results of operations and financial condition of Arcadian, MD Care, and Anvita have been included in our condensed consolidated statements of comprehensive income and condensed consolidated balance sheets from the acquisition dates. Acquisition-related costs recognized in connection with these acquisitions were not material. The pro forma financial information assuming the acquisitions had occurred as of the beginning of the calendar year prior to the year of acquisition was not material to our results of operations. During the second half of 2011, we entered into a definitive agreement to acquire SeniorBridge, a chronic-care provider providing in-home care for seniors. Once the transaction has closed, we expect that SeniorBridge will expand our existing clinical and home health capabilities and strengthen our offerings for members with complex chronic-care needs. The closing of this acquisition is subject to state regulatory approval.

Acquisitions

3 Months Ended

Mar. 31, 2012

3. ACQUISITIONS

Effective March 31, 2012, we acquired Arcadian Management Services, Inc., or Arcadian, a Medicare Advantage health maintenance organization (HMO) serving members in 15 U.S. states, increasing Medicare membership and expanding our Medicare footprint and future growth opportunities in these areas. The preliminary allocation of the purchase price resulted in goodwill of $43 million and other intangible assets of $38 million. The goodwill was assigned to the Retail segment and is not deductible for tax purposes. The other intangible assets, which primarily consist of customer contracts and provider contracts, have a weighted average useful life of 9.7 years. The purchase price allocation is preliminary, subject to completion of valuation analyses, including, for example, refining assumptions used to calculate the fair value of other intangible assets.

Effective December 30, 2011, we acquired the California-based Medicare Advantage HMO MD Care, Inc., or MD Care, increasing Medicare membership and expanding our Medicare footprint and future growth opportunity in California. The purchase price was not material.

On December 6, 2011, we acquired Anvita, Inc., or Anvita, a San Diego-based health care analytics company. The Anvita acquisition provides scalable analytics solutions that produce clinical insights which we expect to enhance our ability to improve the quality and lower the cost of health care for our members and customers. The preliminary allocation of the purchase price resulted in goodwill of $117 million and other intangible assets of $60 million. The goodwill was assigned to the Retail segment and is not deductible for tax purposes. The other intangible assets, which primarily consist of technology and customer contracts, have a weighted average useful life of 6.5 years. The purchase price allocation is preliminary, subject to completion of valuation analyses, including, for example, refining assumptions used to calculate the fair value of other intangible assets.

The results of operations and financial condition of Arcadian, MD Care, and Anvita have been included in our condensed consolidated statements of comprehensive income and condensed consolidated balance sheets from the acquisition dates. Acquisition-related costs recognized in connection with these acquisitions were not material. The pro forma financial information assuming the acquisitions had occurred as of the beginning of the calendar year prior to the year of acquisition was not material to our results of operations.

During the second half of 2011, we entered into a definitive agreement to acquire SeniorBridge, a chronic-care provider providing in-home care for seniors. Once the transaction has closed, we expect that SeniorBridge will expand our existing clinical and home health capabilities and strengthen our offerings for members with complex chronic-care needs. The closing of this acquisition is subject to state regulatory approval.