Number of Preferred Equity Method Investments Sold

No definition available.

Name:	peak_NumberOfPreferredEquityMethodInvestmentsSold
Namespace Prefix:	peak_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Definition

Number Of Properties Sold

+ References

No definition available.

+ Details

Name:	peak_NumberOfPropertiesSold
Namespace Prefix:	peak_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents number of unconsolidated joint ventures between entity and an institutional capital partner.

+ References

No definition available.

+ Details

Name:	peak_NumberOfUnconsolidatedJointVenture
Namespace Prefix:	peak_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Definition

The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 323
-SubTopic 10
-Section 50
-Paragraph 3
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=114001798&loc=d3e33918-111571

+ Details

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

- Definition

Amount of gain (loss) on sale or disposal of an equity method investment.

+ 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=123570139&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)(7)(c))
-URI http://asc.fasb.org/extlink&oid=123367319&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)(9)(a))
-URI http://asc.fasb.org/extlink&oid=123367319&loc=SL114868664-224227

+ Details

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

- Definition

This item represents the carrying amount on the entity's balance sheet of its investment in common stock of an equity method investee. This is not an indicator of the fair value of the investment, rather it is the initial cost adjusted for the entity's share of earnings and losses of the investee, adjusted for any distributions (dividends) and other than temporary impairment (OTTI) losses recognized.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 323
-SubTopic 10
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=109237563&loc=d3e33749-111570

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 25
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e8813-108599

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.12)
-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

+ Details

Name:	us-gaap_EquityMethodInvestments
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Amount of investment in equity method investee and investment in and advance to affiliate.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.12)
-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

+ Details

Name:	us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- 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 purchase of or advances to an equity method investments, which are investments in joint ventures and entities in which the entity has an equity ownership interest normally of 20 to 50 percent and exercises significant influence.

+ 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 (b)
-URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3213-108585

+ Details

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

- Definition

The cash inflow from sale of buildings.

+ 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=123570139&loc=d3e3179-108585

+ Details

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

- Definition

The cash inflow associated with the sale of equity method investments, which are investments in joint ventures and entities in which the entity has an equity ownership interest normally of 20 to 50 percent and exercises significant influence.

+ 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 (b)
-URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3179-108585

+ Details

Name:	us-gaap_ProceedsFromSaleOfEquityMethodInvestments
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

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

Investments in and Advances to Unconsolidated Joint Ventures - Schedule of Equity Method Investments (Details) $ in Thousands	1 Months Ended				12 Months Ended
	Dec. 31, 2021 USD ($) property	May 31, 2021 USD ($) property	Apr. 30, 2021 USD ($) preferred_equity_investment property	Jan. 31, 2021 property	Dec. 31, 2019 property	Dec. 31, 2020 USD ($) joint_venture	Jan. 31, 2020 property
Schedule of Equity Method Investments [Line Items]
Property count							15
Investments in and advances to unconsolidated joint ventures \| $	$ 403,634					$ 402,871
Number of unconsolidated joint ventures	3
Equity Method Investment, Nonconsolidated Investee or Group of Investees
Schedule of Equity Method Investments [Line Items]
Equity method investments \| $						$ 6,000
Discovery Naples JV
Schedule of Equity Method Investments [Line Items]
Investment ownership percentage						41.00%
Discovery Sarasota JV
Schedule of Equity Method Investments [Line Items]
Investment ownership percentage						47.00%
HCP Ventures IV, LLC
Schedule of Equity Method Investments [Line Items]
Investment ownership percentage	20.00%
H C P Ventures III, LLC
Schedule of Equity Method Investments [Line Items]
Investment ownership percentage	30.00%
Suburban Properties, LLC
Schedule of Equity Method Investments [Line Items]
Investment ownership percentage	67.00%
CCRC JV Investment
Schedule of Equity Method Investments [Line Items]
Investment ownership percentage		49.00%			49.00%		49.00%
Proceeds from sale of buildings \| $		$ 19,000
Otay Ranch
Schedule of Equity Method Investments [Line Items]
Proceeds from sale of equity method investments \| $			$ 32,000
Otay Ranch \| Discontinued Operations
Schedule of Equity Method Investments [Line Items]
Gain on sale of unconsolidated joint venture \| $			$ 5,000
Otay Ranch \| Equity Method Investment, Nonconsolidated Investee or Group of Investees
Schedule of Equity Method Investments [Line Items]
Investment ownership percentage						90.00%
Discovery Naples JV and Discovery Sarasota JV
Schedule of Equity Method Investments [Line Items]
Number of unconsolidated joint ventures \| joint_venture						2
Brookedale MTCA \| CCRC JV Investment
Schedule of Equity Method Investments [Line Items]
Number of assets sold		2
Proceeds from sale of buildings \| $		$ 38,000
Other \| SWF SH JV
Schedule of Equity Method Investments [Line Items]
Property count	19
Investment ownership percentage	54.00%
Equity method investments \| $	$ 355,394					$ 357,581
Other \| Other Portfolio JVs
Schedule of Equity Method Investments [Line Items]
Property count	0
Investment ownership percentage	0.00%
Equity method investments \| $	$ 0					9,157
Life science \| Life Science JV
Schedule of Equity Method Investments [Line Items]
Property count	1
Investment ownership percentage	49.00%
Equity method investments \| $	$ 25,605					24,879
Life science \| Needham Land Parcel JV
Schedule of Equity Method Investments [Line Items]
Property count	0
Investment ownership percentage	38.00%
Equity method investments \| $	$ 13,566					0
Payments to acquire equity method investments \| $	$ 13,000
Medical office
Schedule of Equity Method Investments [Line Items]
Property count	4
Number of assets sold					11
Medical office \| Medical Office JVs
Schedule of Equity Method Investments [Line Items]
Property count	3
Equity method investments \| $	$ 9,069					9,673
Medical office \| Medical Office JVs \| Minimum
Schedule of Equity Method Investments [Line Items]
Investment ownership percentage	20.00%
Medical office \| Medical Office JVs \| Maximum
Schedule of Equity Method Investments [Line Items]
Investment ownership percentage	67.00%
CCRC \| CCRC JV Investment
Schedule of Equity Method Investments [Line Items]
Property count	0
Investment ownership percentage	0.00%
Equity method investments \| $	$ 0					$ 1,581
Senior Housing Operating Portfolio
Schedule of Equity Method Investments [Line Items]
Number of assets sold				16	18
Senior Housing Operating Portfolio \| Discovery SHOP Portfolio
Schedule of Equity Method Investments [Line Items]
Number of preferred equity method investments sold \| preferred_equity_investment			2
Number of assets sold			10
Other non-reportable \| Brookedale MTCA
Schedule of Equity Method Investments [Line Items]
Property count							13