Real Estate and Other Activities - Disposals - 2022 Activity Additional Information (Detail) $ in Millions				3 Months Ended	12 Months Ended
	Apr. 09, 2024 USD ($) Property	Sep. 01, 2022 USD ($) Property	Mar. 14, 2022 USD ($) Facility	Mar. 31, 2023 Facility	Dec. 31, 2024 Facility	Dec. 31, 2022 USD ($) Facility Property
Debt Instrument [Line Items]
Number of facilities sold | Facility				3		15
Proceeds from sale of facilities						$ 522
Number of ancillary properties sold | Property						5
Gain (loss) on real estate dispositions						$ 100
Disposal Group, Not Discontinued Operations [Member]
Debt Instrument [Line Items]
Straight-line rent write-offs						$ 42
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
Prime Healthcare Services, Inc. Facilities [Member]
Debt Instrument [Line Items]
Number of facilities sold | Facility					6
Number of properties sold | Property	5	11
Proceeds from sale of facilities	$ 250	$ 366
Gain (loss) on real estate dispositions	$ 53