The current amount of expenditures for a real estate project that has not yet been completed.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03.10)
-URI http://asc.fasb.org/extlink&oid=120400017&loc=d3e572229-122910

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- Definition

The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
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Balance Type:	credit
Period Type:	instant

- Definition

The number of real estate properties owned as of the balance sheet date.

+ 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.

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- Definition

Payments to develop real estate assets is the process of adding improvements on or to a parcel of land. Such improvements may include drainage, utilities, subdividing, access, buildings, and any combination of these elements; and are generally classified as cash flow from investing activities.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 13
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3213-108585

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Period Type:	duration

- Definition

Minimum amount of purchase arrangement in which the entity has agreed to expend funds to procure goods or services from a supplier.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
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Balance Type:	credit
Period Type:	instant

- Definition

Additional financing to complete construction.

+ References

No definition available.

+ Details

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Namespace Prefix:	well_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Expected Additional Payments To Develop Real Estate Assets

+ References

No definition available.

+ Details

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Namespace Prefix:	well_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Number Of Outstanding Credit Obligations

+ References

No definition available.

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Commitments and Contingencies (Details) $ in Thousands	9 Months Ended
Commitments and Contingencies (Details) $ in Thousands	Sep. 30, 2021 USD ($) obligation property	Apr. 29, 2021 properties	Dec. 31, 2020 USD ($)
Other Commitments [Line Items]
Number of outstanding credit obligations \| obligation	13
Letter of credit obligation	$ 28,366
Outstanding construction financings for leased properties	562,487		$ 487,742
Additional financing to complete construction	1,072,343
Not Primary Beneficiary
Other Commitments [Line Items]
Total loans made	273,654
Expected additional funding for investments	$ 16,667
Number of properties \| property	8
Capital Improvements
Other Commitments [Line Items]
Total contingent purchase obligations	$ 101,284
Triple-net
Other Commitments [Line Items]
Number of properties \| properties		51