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.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 954
-SubTopic 310
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481027/954-310-50-2

+ Details

Name:	us-gaap_ConcentrationRiskLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

The equity interest of noncontrolling shareholders, partners or other equity holders in consolidated entity.

+ References

No definition available.

+ Details

Name:	us-gaap_MinorityInterestOwnershipPercentageByNoncontrollingOwners
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

The parent entity's interest in net assets of the subsidiary, expressed as a percentage.

+ References

No definition available.

+ Details

Name:	us-gaap_MinorityInterestOwnershipPercentageByParent
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Net Increase or Decrease in balance of noncontrolling interest in the subsidiary during the reporting period.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 45
-Paragraph 16
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481231/810-10-45-16

+ Details

Name:	us-gaap_MinorityInterestPeriodIncreaseDecrease
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	na
Period Type:	duration

- Definition

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

+ References

No definition available.

+ Details

Name:	us-gaap_NumberOfRealEstateProperties
Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Definition

The cash outflow associated with the investment in or advances to an entity in which the reporting entity shares control of the entity with another party or group.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 13
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482740/230-10-45-13

+ Details

Name:	us-gaap_PaymentsToAcquireInterestInJointVenture
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

The cash inflow from the sale of an investment interest in a joint venture that the reporting entity has not previously accounted for using consolidation or the equity method of accounting.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 12
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482740/230-10-45-12

+ Details

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

- Definition

Disposal Group, Number Of Properties

+ References

No definition available.

+ Details

Name:	well_DisposalGroupNumberOfProperties
Namespace Prefix:	well_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Joint Venture, Voting Interest Acquired, Percentage

+ References

No definition available.

+ Details

Name:	well_JointVentureVotingInterestAcquiredPercentage
Namespace Prefix:	well_
Data Type:	dtr-types1:percentItemType
Balance Type:	na
Period Type:	instant

- Details

Name:	us-gaap_ConcentrationRiskByBenchmarkAxis=well_NetOperatingingIncomeMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_ConcentrationRiskByTypeAxis=us-gaap_CreditConcentrationRiskMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_CounterpartyNameAxis=well_IntegraHealthMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_OwnershipAxis=well_IntegraHealthJointVentureMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	dei_LegalEntityAxis=well_ProMedicaMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_OwnershipAxis=well_ProMedicaJointVenturesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	dei_LegalEntityAxis=well_IntegraHealthMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis=well_SkilledNursingFacilitiesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis=well_AssistedLivingAndMemoryCareMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Credit Concentration - Narrative (Details) $ in Thousands	1 Months Ended		12 Months Ended
Credit Concentration - Narrative (Details) $ in Thousands	Jan. 31, 2023 USD ($) property	Dec. 31, 2022 USD ($) property	Dec. 31, 2023 USD ($) property	Dec. 31, 2022 USD ($) property	Dec. 31, 2021 USD ($)
Concentration Risk [Line Items]
Payments to acquire interest \| $			$ 343,498	$ 502,171	$ 396,020
Net Operating Income \| Credit Concentration Risk
Concentration Risk [Line Items]
Number of real estate properties			1,901
Integra Health
Concentration Risk [Line Items]
Proceeds from sale of interest \| $		$ 73,000
Integra Health Joint Venture
Concentration Risk [Line Items]
Ownership percentage by parent		85.00%		85.00%
Integra Healthcare Properties
Concentration Risk [Line Items]
Decrease in interest \| $		$ 273,504
Integra Healthcare Properties \| ProMedica Joint Ventures
Concentration Risk [Line Items]
Ownership interest		15.00%		15.00%
Integra Health \| Integra Health Joint Venture
Concentration Risk [Line Items]
Ownership interest		15.00%		15.00%
Number of real estate properties		54		54
Interest acquired	15.00%
Payments to acquire interest \| $	$ 74,000
Skilled Nursing Facilities \| ProMedica Joint Ventures
Concentration Risk [Line Items]
Number of properties sold				147
Skilled Nursing Facilities \| Integra Health Joint Venture
Concentration Risk [Line Items]
Number of real estate properties	93
Skilled Nursing Facilities \| Integra Healthcare Properties
Concentration Risk [Line Items]
Number of properties sold		147
Skilled Nursing Facilities \| Integra Health \| Integra Health Joint Venture
Concentration Risk [Line Items]
Number of real estate properties	31
Assisted Living And Memory Care \| Integra Healthcare Properties
Concentration Risk [Line Items]
Number of real estate properties		58		58