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Real Estate and Other Activities - Disposals - 2022 Activity - Additional Information (Detail)
$ in Millions
3 Months Ended
Mar. 14, 2022
USD ($)
Facility
Mar. 31, 2023
USD ($)
Mar. 31, 2022
USD ($)
Debt Instrument [Line Items]      
Gain (loss) on real estate dispositions     $ 15
Proceeds from sale of facilities     48
Massachusetts-based General Acute Care Hospitals [Member]      
Debt Instrument [Line Items]      
Number of facilities acquired | Facility 8    
Purchase price of acquisition $ 1,700    
Gain (loss) on real estate dispositions $ 600    
Straight-line rent write-offs     $ 125
Prime [Member]      
Debt Instrument [Line Items]      
Proceeds from sale of facilities   $ 100