Disposition Of Properties, Number Available For Sale

No definition available.

Name:	hcp_DispositionOfPropertiesNumberAvailableForSale
Namespace Prefix:	hcp_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Definition

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

+ References

No definition available.

+ Details

Name:	hcp_DispositionOfPropertiesSoldNumber
Namespace Prefix:	hcp_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents number of assets sold or transited per definitive agreements.

+ References

No definition available.

+ Details

Name:	hcp_NumberOfAssetsSoldOrTransited
Namespace Prefix:	hcp_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Number Of Properties Acquired

+ References

No definition available.

+ Details

Name:	hcp_NumberOfPropertiesAcquired
Namespace Prefix:	hcp_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Number Of Properties To Be Sold

+ References

No definition available.

+ Details

Name:	hcp_NumberOfPropertiesToBeSold
Namespace Prefix:	hcp_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Definition

Operating Lease, Number Of Properties With Rent Concessions

+ References

No definition available.

+ Details

Name:	hcp_OperatingLeaseNumberOfPropertiesWithRentConcessions
Namespace Prefix:	hcp_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Definition

Operating Lease, Rental Concessions

+ References

No definition available.

+ Details

Name:	hcp_OperatingLeaseRentalConcessions
Namespace Prefix:	hcp_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Total consideration, cash and noncash, received by seller for the sale of real estate.

+ References

No definition available.

+ Details

Name:	hcp_TotalConsiderationForDispositionOfRealEstate
Namespace Prefix:	hcp_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Percentage of voting equity interests acquired at the acquisition date in the business combination.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=79982066&loc=d3e1392-128463

+ Details

Name:	us-gaap_BusinessAcquisitionPercentageOfVotingInterestsAcquired
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 30
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=109124213&loc=d3e6613-128477

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 50
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=35744584&loc=d3e6927-128479

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 30
-Paragraph 7
-URI http://asc.fasb.org/extlink&oid=109124213&loc=d3e6578-128477

+ Details

Name:	us-gaap_BusinessCombinationConsiderationTransferred1
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
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 purchase of noncontrolling interest during the 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 13
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3213-108585

+ Details

Name:	us-gaap_PaymentsToAcquireAdditionalInterestInSubsidiaries
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=109223946&loc=d3e3179-108585

+ Details

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

- Definition

Percentage of the Variable Interest Entity's (VIE) voting interest owned by (or beneficial interest in) the reporting entity (directly or indirectly).

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 50
-Paragraph 5A
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=108788376&loc=SL6759159-111685

+ Details

Name:	us-gaap_VariableInterestEntityOwnershipPercentage
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Details

Name:	srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=hcp_BrookedaleMTCAMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=hcp_RIDEAFacilitiesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_MajorPropertyClassAxis=us-gaap_AssetsLeasedToOthersMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_StatementBusinessSegmentsAxis=hcp_SeniorHousingTripleNetMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_StatementBusinessSegmentsAxis=hcp_SeniorHousingOperatingPortfolioMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Real Estate Transactions - Brookedale MTCA Transactions (Details) $ in Millions			1 Months Ended		3 Months Ended					12 Months Ended
	May 01, 2019 property	Nov. 01, 2017 USD ($) property	Mar. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)	Mar. 31, 2019 property facility	Dec. 31, 2018 USD ($) property facility	Sep. 30, 2018 facility	Jun. 30, 2018 facility	Mar. 31, 2018 facility	Dec. 31, 2018 property facility	Jan. 01, 2018 USD ($) property
Real Estate [Line Items]
Percentage of interest acquired		10.00%
Consideration transferred \| $		$ 95
Payment to acquired noncontrolling interest \| $			$ 63	$ 32
Brookedale MTCA
Real Estate [Line Items]
Number of assets to be sold (in properties)						19				19
RIDEA Facilities
Real Estate [Line Items]
Ownership percentage (as a percent)		90.00%
Assets Leased to Others
Real Estate [Line Items]
Number of assets transitioned										37
Assets Leased to Others \| Brookedale MTCA
Real Estate [Line Items]
Proceeds from sale of buildings \| $						$ 377
Assets Leased to Others \| RIDEA Facilities
Real Estate [Line Items]
Property count (in properties)		58
Senior housing triple-net
Real Estate [Line Items]
Number of properties disposed (in facilities) \| facility					2			2
Senior housing triple-net \| Assets Leased to Others
Real Estate [Line Items]
Property count (in properties)		78
Disposition of properties, available for sale (in properties)					32
Reduction in rent \| $											$ 5
Number of properties with rent concessions											3
Total consideration for disposition of real estate \| $		$ 35
Number of assets transitioned	4									17
Senior housing triple-net \| Assets Leased to Others \| Brookedale MTCA
Real Estate [Line Items]
Number of properties acquired (in properties) \| facility										2
SHOP
Real Estate [Line Items]
Number of properties disposed (in facilities) \| facility					9	2	11	8	2
SHOP \| Assets Leased to Others
Real Estate [Line Items]
Number of assets transitioned										20
SHOP \| Assets Leased to Others \| Brookedale MTCA
Real Estate [Line Items]
Number of assets to be sold (in properties)						4				4
SHOP \| Assets Leased to Others \| RIDEA Facilities
Real Estate [Line Items]
Property count (in properties)		36
Total consideration for disposition of real estate \| $		$ 240