For an unclassified balance sheet, amounts due from an entity in which the reporting entity shares joint control with another party or group.

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

Real Estate Activities - Loans - Additional Information (Detail) $ in Thousands, € in Millions	12 Months Ended
	Dec. 31, 2019 USD ($) Hospital Property Operator	Dec. 31, 2019 EUR (€) Property Operator	Dec. 31, 2018 USD ($)
Loans [Line Items]
Acquisition loans	$ 123,893		$ 3,454
Acute Care Hospitals [Member]
Loans [Line Items]
Acquisition loans	$ 112,900
Number of hospitals acquired \| Hospital	2
Primotop Holdings S.a.r.l. [Member]
Loans [Line Items]
Shareholder loan to joint venture \| €		€ 290
Mortgage Loans [Member] \| Steward Health Care System LLC [Member]
Loans [Line Items]
Number of Real Estate Properties \| Property	11	11
Number Of Operators \| Operator	5	5
Increase in mortgage loans	$ 51,300