Represents the number of stages required to complete the acquisition.

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Represents the initial available term of asset pools.

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No definition available.

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Represents the total available term of asset pools.

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No definition available.

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- Definition

The amount of acquisition cost of a business combination allocated to an intangible liability.

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No definition available.

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- Definition

The pro forma net income or loss attributable to the parent for the period as if the business combination or combinations had been completed at the beginning of a period.

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No definition available.

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- Definition

Represents the initial term of the lease.

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No definition available.

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Represents the maturity period of the loan receivable.

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Represents the rate of increase in rent receivable per year after each of the first five years of the initial lease term, expressed as a percentage of the rent receivable in the first year of lease term.

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No definition available.

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Represents the rate of increase in rent receivable per year for the remaining years of lease term, expressed as a percentage of rent receivable in the first year of lease term.

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No definition available.

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- Definition

Represents the number of asset pools under which properties are grouped.

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No definition available.

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- Definition

Represents the number of communities currently lease-up.

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Represents the number of communities that are stabilized.

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Represents the number of extension options available under the master net leases by the operator.

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Represents the total number of facilities the entity acquired at the end of an acquisition.

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The number of leases.

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The number of properties operated pursuant to a triple-net master lease.

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Represents the percentage of real estate property encompasses in portfolio acquired.

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Represents the percentage points added to the reference rate to compute the variable cap rate on the lessor's operating lease beginning the 6th year.

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No definition available.

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Represents the percentage points added to the reference rate to compute the variable floor rate on the lessor's operating lease beginning the 6th year.

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No definition available.

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- Definition

Amount of cash paid to acquire the entity.

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-Name Statement of Financial Accounting Standard (FAS)

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The total cost of the acquired entity including the cash paid to shareholders of acquired entities, fair value of debt and equity securities issued to shareholders of acquired entities, the fair value of the liabilities assumed, and direct costs of the acquisition.

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The pro forma basic net income per share for a period as if the business combination or combinations had been completed at the beginning of a period.

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-Name Accounting Standards Codification

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The pro forma diluted net income per share for a period as if the business combination or combinations had been completed at the beginning of a period.

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- Definition

The amount of acquisition cost of a business combination allocated to an identifiable intangible asset that will be amortized.

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- Definition

The amount of acquisition cost of a business combination allocated to liabilities assumed.

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-Name Emerging Issues Task Force (EITF)

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The amount of acquisition cost of a business combination allocated to land and building to be used in the normal course of business, not including assets that are held-for-sale.

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The pro forma net Income or Loss for the period as if the business combination or combinations had been completed at the beginning of a period.

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The pro forma revenue for a period as if the business combination or combinations had been completed at the beginning of the period.

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- Definition

Amount of the contractual principal due at the origination of the mortgage loan (face amount).

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Reference 1: http://www.xbrl.org/2003/role/presentationRef

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-Name Accounting Standards Codification

-Topic 948

-SubTopic 310

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-Subparagraph (SX 210.12-29)

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The highest stated interest rate within the mortgage loans included in the loan grouping.

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The lowest stated interest rate within the mortgage loans included in the loan grouping.

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The number of states the entity operates in as of the balance sheet date.

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No definition available.

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Future rental payments receivable within one year of the balance sheet date under an operating lease.

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The cash outflow for purchases of and capital improvements on property, plant and equipment (capital expenditures), software, and other intangible assets.

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-Glossary Investing Activities

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Real Estate Property Investments (Details) (USD $)	3 Months Ended			6 Months Ended
Real Estate Property Investments (Details) (USD $)	Mar. 31, 2013 item	Dec. 31, 2012 item	Mar. 31, 2012	Mar. 31, 2013 item
Senior housing, life science and medical office
Acquisition
Payments to acquire productive assets	$ 42,000,000		$ 30,000,000
Blackstone JV \| Senior housing
Acquisition
Number of senior housing communities	4	129		133
Number of states where acquired senior housing communities are located	29			29
Number of communities that are stabilized	99			99
Number of communities currently lease-up	34			34
Number of stages for acquisition to close				2
Acquistion of senior housing	38,000,000	1,700,000,000		38,000,000
Cash consideration	1,730,000,000			1,730,000,000
Liabilities assumed	13,000,000			13,000,000
Cash consideration paid to acquire real estate	1,570,000,000			1,570,000,000
Cash consideration paid to acquire intangible assets	174,000,000			174,000,000
Consideration, Debt and Other Liabilities Assumed	4,000,000			4,000,000
Unaudited pro forma consolidated results of operations
Revenues			482,277,000
Net income			204,408,000
Net income applicable to HCP, Inc.			201,224,000
Basic earnings per common share (in dollars per share)	$ 0.43
Diluted earnings per common share (in dollars per share)	$ 0.43
Blackstone JV \| Senior housing \| Emeritus Corporation
Acquisition
Number of individual leases				5
Number of properties operated pursuant to a new triple-net master lease				128
Rental and related revenues	105,800,000			105,800,000
Rate of increase in rent receivable per year on average over the initial lease term (as a percent)				3.70%
Initial lease term with Emeritus Corporation				5 years
Rate of increase in rent receivable per year for remaining years of lease term (as a percent)				3.00%
Percentage of operating leases basis spread on variable floor rate				103.00%
Percentage of operating leases basis spread on variable cap rate				130.00%
Number of asset pools	3			3
Number of extension options with Emeritus Corporation				2
Blackstone JV \| Senior housing \| Emeritus Corporation \| Real Estate Secured
Acquisition
Number of senior housing communities				9
Principal amount of secured debt	$ 52,000,000			$ 52,000,000
Term of loan				4 years
Interest rate on debt, initially (as a percent)				6.10%
Interest rate on debt after four year term (as a percent)				6.80%
Blackstone JV \| Senior housing \| Minimum \| Emeritus Corporation
Acquisition
Initial available term of asset pools				14 years
Total initial available term of asset pools				30 years
Blackstone JV \| Senior housing \| Maximum \| Emeritus Corporation
Acquisition
Initial available term of asset pools				16 years
Total initial available term of asset pools				35 years
Blackstone JV \| Senior housing \| Assisted living
Acquisition
Percentage of units of real estate property				61.00%
Blackstone JV \| Senior housing \| Independent living
Acquisition
Percentage of units of real estate property				25.00%
Blackstone JV \| Senior housing \| Memory care
Acquisition
Percentage of units of real estate property				13.00%
Blackstone JV \| Senior housing \| Skilled nursing
Acquisition
Percentage of units of real estate property				1.00%