Equity Investments	12 Months Ended
Dec. 31, 2021
Equity Method Investments And Joint Ventures [Abstract]
Equity Investments	13. EQUITY INVESTMENTS On July 30, 2021, the Company sold its unconsolidated minority equity interests in Macon Healthcare, LLC, a joint venture with certain subsidiaries of HCA representing two hospitals in Macon, Georgia, in which the Company held a 38% interest. The Company received $110 million in cash in connection with the sale of its equity interests and, as a result, recognized a pre-tax gain of approximately $39 million on the sale of equity interests in Macon Healthcare, LLC during the year ended December 31, 2021. On December 31, 2016, the Company sold 80% of its ownership interest in the legal entity that owned and operated its home care agency business. As part of the divestiture of its controlling interest in the home care agency business, the Company recorded an equity method investment representing its remaining 20% ownership. Since December 31, 2016 and primarily in conjunction with the divestiture of hospitals, the Company has divested of its remaining 20% ownership in certain home care agency businesses. In March 2005, the Company began purchasing items, primarily medical supplies, medical equipment and pharmaceuticals, under an agreement with HealthTrust Purchasing Group, L.P. (“HealthTrust”), a group purchasing organization in which the Company is a noncontrolling partner. As of December 31, 2021, the Company had a 17.5% ownership interest in HealthTrust. The Company’s investment in all of its unconsolidated affiliates was $129 million and $190 million at December 31, 2021 and 2020, respectively, and is included in other assets, net in the accompanying consolidated balance sheets. Included in the Company’s results of operations is the Company’s equity in pre-tax earnings from its investments in unconsolidated affiliates, which was $22 million, $10 million and $15 million for the years ended December 31, 2021, 2020 and 2019, respectively.

Equity Investments

12 Months Ended

Dec. 31, 2021

Equity Method Investments And Joint Ventures [Abstract]

13. EQUITY INVESTMENTS

On July 30, 2021, the Company sold its unconsolidated minority equity interests in Macon Healthcare, LLC, a joint venture with certain subsidiaries of HCA representing two hospitals in Macon, Georgia, in which the Company held a 38% interest. The Company received $110 million in cash in connection with the sale of its equity interests and, as a result, recognized a pre-tax gain of approximately $39 million on the sale of equity interests in Macon Healthcare, LLC during the year ended December 31, 2021.

On December 31, 2016, the Company sold 80% of its ownership interest in the legal entity that owned and operated its home care agency business. As part of the divestiture of its controlling interest in the home care agency business, the Company recorded an equity method investment representing its remaining 20% ownership. Since December 31, 2016 and primarily in conjunction with the divestiture of hospitals, the Company has divested of its remaining 20% ownership in certain home care agency businesses.

In March 2005, the Company began purchasing items, primarily medical supplies, medical equipment and pharmaceuticals, under an agreement with HealthTrust Purchasing Group, L.P. (“HealthTrust”), a group purchasing organization in which the Company is a noncontrolling partner. As of December 31, 2021, the Company had a 17.5% ownership interest in HealthTrust.

The Company’s investment in all of its unconsolidated affiliates was $129 million and $190 million at December 31, 2021 and 2020, respectively, and is included in other assets, net in the accompanying consolidated balance sheets. Included in the Company’s results of operations is the Company’s equity in pre-tax earnings from its investments in unconsolidated affiliates, which was $22 million, $10 million and $15 million for the years ended December 31, 2021, 2020 and 2019, respectively.