v3.26.1
Acquisitions and Dispositions - Additional Information (Detail)
$ in Millions
6 Months Ended
Jun. 30, 2026
USD ($)
Jun. 30, 2025
USD ($)
Hospital
Business Acquisition [Line Items]    
Proceeds from sale of business $ 21 $ 167
Pretax gain (loss) before tax   (2)
Hospital Facility [Member]    
Business Acquisition [Line Items]    
Aggregate purchase price   $ 190
Number of hospitals purchased | Hospital   2
Proceeds from sale of business   $ 156
Number of hospitals sold | Hospital   1
Healthcare Entity [Member]    
Business Acquisition [Line Items]    
Aggregate purchase price 386 $ 136
Real Estate and Other Investments [Member]    
Business Acquisition [Line Items]    
Proceeds from sale of business 21 $ 11
Pretax gain (loss) before tax $ 9