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
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3602-108585

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03(b)(9)(a))
-URI http://asc.fasb.org/extlink&oid=115205541&loc=SL114868664-224227

Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03(b)(7)(c))
-URI http://asc.fasb.org/extlink&oid=115205541&loc=SL114868664-224227

Reference 4: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 220
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-04(14)(d))
-URI http://asc.fasb.org/extlink&oid=114873765&loc=SL114874048-224260

Reference 5: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 220
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-04(3)(a))
-URI http://asc.fasb.org/extlink&oid=114873790&loc=SL114874131-224263

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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

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
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3179-108585

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Real Estate Transactions - Disposition of Real Estate (Details) $ in Thousands	1 Months Ended											3 Months Ended		6 Months Ended
	Jul. 31, 2018 USD ($) facility	Jun. 30, 2018 USD ($) facility	Apr. 30, 2018 USD ($) facility	Jan. 31, 2018 USD ($) facility	Dec. 31, 2017 USD ($) facility	Nov. 30, 2017 USD ($) facility	Oct. 31, 2017 USD ($) facility	Aug. 31, 2017 USD ($) facility	Apr. 30, 2017 USD ($) facility	Mar. 31, 2017 USD ($) property	Jan. 31, 2017 USD ($) facility	Jun. 30, 2018 USD ($)	Jun. 30, 2017 USD ($)	Jun. 30, 2018 USD ($)	Jun. 30, 2017 USD ($)
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Gain (loss) on sales of real estate, net												$ 46,064	$ 412	$ 66,879	$ 317,670
SHOP
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Number of properties disposed \| facility		4	4	2
Total consideration for disposal of real estate		$ 38,000		$ 35,000
Gain (loss) on sales of real estate, net				$ 21,000
Senior housing triple-net
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Number of properties disposed			2							64
Total consideration for disposal of real estate										$ 1,125,000
Gain (loss) on sales of real estate, net										$ 170,000
Triple-net and SHOP
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Total consideration for disposal of real estate			$ 266,000
Gain (loss) on sales of real estate, net			$ 26,000
Life science
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Number of properties disposed \| facility											4
Total consideration for disposal of real estate											$ 76,000
Gain (loss) on sales of real estate, net											$ 45,000
Disposed of by sale \| Land
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Number of properties disposed \| facility									1
Total consideration for disposal of real estate									$ 27,000
Disposed of by sale \| Building \| SHOP
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Number of properties disposed \| facility					3	1
Total consideration for disposal of real estate					$ 17,000	$ 24,000
Disposed of by sale \| Building \| Senior housing triple-net
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Number of properties disposed \| facility							2	2
Total consideration for disposal of real estate							$ 12,000	$ 15,000
Gain (loss) on sales of real estate, net							$ 7,000	$ 5,000
Disposed of by sale \| Building \| Life science
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Number of properties disposed \| facility									1
Total consideration for disposal of real estate									$ 5,000
Gain (loss) on sales of real estate, net									$ 1,000
Disposed of by sale \| Building \| Medical office
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Number of properties disposed \| facility					2	1
Total consideration for disposal of real estate					$ 3,000	$ 11,000
Disposed of by sale \| Building \| SHOP and Medical office
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Gain (loss) on sales of real estate, net					$ (2,000)	$ 29,000
Subsequent Event \| SHOP
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Number of properties disposed \| facility	4
Subsequent Event \| Lifescience and SHOP
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Total consideration for disposal of real estate	$ 288,000
Gain (loss) on sales of real estate, net	$ 80,000
Subsequent Event \| Life science
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Number of properties disposed \| facility	4