ATM Equity Offering Program Aggregate Amount Remaining

No definition available.

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

- Definition

The maximum aggregate gross sales price of stock authorized to be sold through an at-the-market continuous equity offering program.

+ References

No definition available.

+ Details

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

- Definition

Forward Contract Indexed to Issuer's Equity, Remainder Outstanding, Forward Rate Per Share

+ References

No definition available.

+ Details

Name:	hcp_ForwardContractIndexedtoIssuersEquityRemainderOutstandingForwardRatePerShare
Namespace Prefix:	hcp_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	instant

- Definition

Forward Contract Indexed to Issuer's Equity, Remainder Outstanding, Shares

+ References

No definition available.

+ Details

Name:	hcp_ForwardContractIndexedtoIssuersEquityRemainderOutstandingShares
Namespace Prefix:	hcp_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

- Definition

Option Indexed To Issuers Equity, Term

+ References

No definition available.

+ Details

Name:	hcp_OptionIndexedToIssuersEquityTerm
Namespace Prefix:	hcp_
Data Type:	xbrli:durationItemType
Balance Type:	na
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_ClassOfStockLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

The per share price of the Company's stock at which the contract holder of the freestanding contract has the right to purchase or sell the Company's stock at a future date.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 40
-Section 50
-Paragraph 5
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=6445032&loc=d3e90205-114008

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 480
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (f)(1)
-URI http://asc.fasb.org/extlink&oid=109262807&loc=d3e22047-110879

+ Details

Name:	us-gaap_ForwardContractIndexedToIssuersEquityForwardRate
Namespace Prefix:	us-gaap_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	duration

- Definition

Number of shares as a settlement alternative for each freestanding forward contract.

+ References

+ Details

Name:	us-gaap_ForwardContractIndexedToIssuersEquitySettlementAlternativesSharesAtFairValue
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

- Definition

The maximum number of shares that could be issued to net share settle a contract, if applicable. If a contract does not have a fixed or determinable maximum number of shares that may be required to be issued, disclose the fact that a potentially infinite number of shares could be issued to settle the contract.

+ References

+ Details

Name:	us-gaap_ForwardContractIndexedToIssuersEquityShares
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

- Definition

The cash inflow from the additional capital contribution to the entity.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 14
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3255-108585

+ Details

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

- Definition

Per share amount received by subsidiary or equity investee for each share of common stock issued or sold in the stock transaction.

+ References

No definition available.

+ Details

Name:	us-gaap_SaleOfStockPricePerShare
Namespace Prefix:	us-gaap_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	instant

- Definition

Number of new stock issued during the period.

+ 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(29))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=109259400&loc=d3e21463-112644

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.3-04)
-URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770

Reference 4: 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(28))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

Name:	us-gaap_StockIssuedDuringPeriodSharesNewIssues
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

- Definition

Equity impact of the value of new stock issued during the period. Includes shares issued in an initial public offering or a secondary public offering.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.3-04)
-URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=109259400&loc=d3e21463-112644

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(29))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 4: 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(28))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

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

- Details

Name:	us-gaap_StatementClassOfStockAxis=us-gaap_CommonStockMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_SubsidiarySaleOfStockAxis=hcp_AtTheMarketProgramMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_SubsidiarySaleOfStockAxis=hcp_AtTheMarketProgram2019Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_SubsidiarySaleOfStockAxis=hcp_ForwardEquityOfferingMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_SubsequentEventTypeAxis=us-gaap_SubsequentEventMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Equity - Additional Information (Details) - USD ($)	1 Months Ended			3 Months Ended		6 Months Ended		12 Months Ended
Equity - Additional Information (Details) - USD ($)	Aug. 01, 2019	Feb. 28, 2019	Dec. 31, 2018	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018	Dec. 31, 2018
Class of Stock [Line Items]
Issuance of common stock, net				$ 405,281,000	$ 659,000	$ 406,813,000	$ 3,433,000
Maximum shares issuable under forward equity sales agreement (in shares)				13,750,000		13,750,000.00
Forward equity sales agreement, initial net price (in usd per share)						$ 31.84
Common Stock
Class of Stock [Line Items]
Issuance of common stock, net (in shares)				5,900,000		5,900,000
Issuance of common stock, net				$ 189,000,000		$ 189,000,000
At-The-Market Program 2018
Class of Stock [Line Items]
ATM aggregate amount authorized		$ 1,000,000,000.0
Issuance of common stock, net (in shares)								5,400,000
Weighted average net price (in usd per share)			$ 28.27					$ 28.27
Issuance of common stock, net						$ 171,000,000
Remainder outstanding (in shares)				8,100,000		8,100,000
Proceeds from issuance of common stock								$ 154,000,000
Share settlement (in shares)				5,500,000		5,500,000
At-The-Market Program 2019
Class of Stock [Line Items]
Issuance of common stock, net						$ 189,000,000
Forward equity sales agreement, initial net price (in usd per share)						$ 30.91
Forward Equity Offering
Class of Stock [Line Items]
Issuance of common stock, net (in shares)				1,500,000		1,500,000
ATM aggregate amount remaining						$ 378,000,000
Weighted average net price (in usd per share)				$ 28.11		$ 28.11
Issuance of common stock, net						$ 42,000,000
Forward rate, remainder outstanding (in usd per share)				$ 31.35		$ 31.35
Remainder outstanding (in shares)				13,750,000		13,750,000
Maximum shares issuable under forward equity sales agreement (in shares)			15,250,000	13,600,000.0		13,600,000
Forward equity sales agreement, initial net price (in usd per share)			$ 28.60	$ 30.91		$ 31.24
Option indexed to issuers equity, term			1 year			1 year
Forward Equity Offering \| Common Stock
Class of Stock [Line Items]
Issuance of common stock, net (in shares)			2,000,000
Weighted average net price (in usd per share)			$ 28.60					$ 28.60
Proceeds from issuance of common stock			$ 57,000,000
Subsequent Event \| Forward Equity Offering
Class of Stock [Line Items]
Maximum shares issuable under forward equity sales agreement (in shares)	1,200,000
Forward equity sales agreement, initial net price (in usd per share)	$ 31.10
Option indexed to issuers equity, term	1 year