Real Estate and Other Activities - Disposals - Additional Information (Detail) $ in Millions		3 Months Ended
Mar. 14, 2022 USD ($) Facility	Mar. 31, 2022 USD ($) Facility	Mar. 31, 2021 USD ($) Facility
Debt Instrument [Line Items]
Gain (loss) on real estate dispositions		$ 15.0	$ 1.0
Number of facilities sold \| Facility		2	1
Proceeds from sale of facilities		$ 48.0	$ 11.0
Massachusetts-based General Acute Care Hospitals [Member]
Debt Instrument [Line Items]
Number of facilities acquired \| Facility	8
Purchase price of acquisition	$ 1,700.0
Gain (loss) on real estate dispositions	$ 600.0

Number of facilities sold.

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- Definition

Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

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- Definition

Amount of difference between the carrying amount and the sales price of real estate properties sold as part of discontinued operations.

+ References

No definition available.

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- Definition

The number of businesses acquired by the entity during the period.

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No definition available.

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Cash received for the sale of real estate that is not part of an investing activity during the current period.

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