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Equity Investments - Additional Information (Details)
$ in Millions
12 Months Ended 72 Months Ended
Jul. 30, 2021
USD ($)
Hospital
Dec. 31, 2022
USD ($)
Dec. 31, 2021
USD ($)
Dec. 31, 2020
USD ($)
Dec. 31, 2016
Dec. 31, 2022
USD ($)
Schedule Of Equity Method Investments [Line Items]            
Proceeds from sale of unconsolidated minority equity interests     $ 110      
Distribution of CoreTrust proceeds   $ 121        
Gain from CoreTrust transaction   119        
Equity method investment   155 129     $ 155
Equity in earnings of unconsolidated affiliates   14 $ 22 $ 10    
CoreTrust Holdings, LLC [Member]            
Schedule Of Equity Method Investments [Line Items]            
Gain from CoreTrust transaction   $ 119        
Home Care [Member]            
Schedule Of Equity Method Investments [Line Items]            
Disposal date   Dec. 31, 2016        
Percentage of ownership interest sold         80.00% 20.00%
Equity method investment ownership percentage         80.00%  
HealthTrust [Member]            
Schedule Of Equity Method Investments [Line Items]            
Equity method investment ownership percentage   13.30%       13.30%
Two Hospitals in Macon Georgia            
Schedule Of Equity Method Investments [Line Items]            
Disposal date     Jul. 30, 2021      
Number of hospitals sold | Hospital 2          
Percentage of ownership interest sold 38.00%          
Proceeds from sale of unconsolidated minority equity interests $ 110          
Pre tax gain on sale of investments     $ 39