Real Estate and Lending Activities - Acquisitions - Additional Information (Detail) - Rehabilitation Hospital with Covenant Health System [Member] - Germany [Member] € in Millions	Feb. 08, 2019 EUR (€)	Jun. 30, 2018 EUR (€) Hospital
Business Acquisition [Line Items]
Purchase price of acquisition \| €	€ 5.7	€ 23.0
Number of facilities acquired \| Hospital		4
MEDIAN [Member]
Business Acquisition [Line Items]
Term of lease	27 years
Lease rent increase percentage	70.00%
Lease rate	1.00%

Lease agreement annual incremental interest percentage.

No definition available.

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- Definition

Lease agreement interest percentage.

+ References

No definition available.

+ Details

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- Definition

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

No definition available.

+ Details

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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.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 30
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=109124213&loc=d3e6613-128477

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
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-Section 50
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Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
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-Topic 805
-SubTopic 30
-Section 30
-Paragraph 7
-URI http://asc.fasb.org/extlink&oid=109124213&loc=d3e6578-128477

+ Details

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Balance Type:	credit
Period Type:	duration

- Definition

Term of lessor's operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 30
-Section 50
-Paragraph 3
-Subparagraph (a)(3)
-URI http://asc.fasb.org/extlink&oid=77888428&loc=SL77919359-209981

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- Definition

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

+ References

No definition available.

+ Details

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Period Type:	duration

- Details

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