Represents the number of properties sold during the period, not categorized as discontinued operations.

No definition available.

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- Definition

The net gain (loss) resulting from sales and other disposals of real estate owned for investment purposes.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
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+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

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

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 12
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-URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3179-108585

+ Details

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

- 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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Data Type:	xbrli:stringItemType
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Period Type:	duration

- Details

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- Details

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- Details

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- Details

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Real Estate Transactions - 2019 Dispositions (Details) $ in Thousands	1 Months Ended	3 Months Ended							9 Months Ended
	Oct. 31, 2019 USD ($) facility	Sep. 30, 2019 USD ($) facility	Jun. 30, 2019 USD ($) facility	Mar. 31, 2019 USD ($) facility	Dec. 31, 2018 USD ($) facility	Sep. 30, 2018 USD ($) facility	Jun. 30, 2018 USD ($) facility	Mar. 31, 2018 USD ($) facility	Sep. 30, 2019 USD ($)	Sep. 30, 2018 USD ($)
Real Estate [Line Items]
Gain (loss) on sales of real estate, net		$ (784)	$ 11,000	$ 8,000		$ 95,332			$ 18,708	$ 162,211
SHOP
Real Estate [Line Items]
Number of properties disposed \| facility		1	1	9	2	11	8	2
Total consideration for disposal of real estate			$ 14,000	$ 68,000	$ 15,000	$ 76,000	$ 268,000	$ 35,000
Gain (loss) on sales of real estate, net								$ 21,000
Medical office
Real Estate [Line Items]
Number of properties disposed \| facility		1	5		2	2
Total consideration for disposal of real estate		$ 3,000	$ 15,000		$ 4,000	$ 21,000
Senior housing triple-net
Real Estate [Line Items]
Number of properties disposed \| facility				2			2
Total consideration for disposal of real estate		$ 7,000		$ 26,000			$ 35,000
Gain (loss) on sales of real estate, net							$ 25,000
Life science
Real Estate [Line Items]
Number of properties disposed \| facility						4
Total consideration for disposal of real estate			$ 7,000			$ 269,000
Land \| Life science
Real Estate [Line Items]
Number of properties disposed \| facility			1	1	1
Total consideration for disposal of real estate				$ 35,000	$ 3,000
Subsequent Event \| Other non-reportable segments
Real Estate [Line Items]
Number of properties disposed \| facility	1
Total consideration for disposal of real estate	$ 15,000