Percentage points added to the reference rate to compute the variable rate on the debt instrument.

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- Definition

Face (par) amount of debt instrument at time of issuance.

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- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

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- 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.

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- Definition

Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

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- Definition

The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.

+ References

No definition available.

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- Definition

The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

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-Subparagraph (SX 210.9-03.16)

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- Definition

Amount of current borrowing capacity under the credit facility considering any current restrictions on the amount that could be borrowed (for example, borrowings may be limited by the amount of current assets), but without considering any amounts currently outstanding under the facility.

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-Subparagraph (SX 210.5-02.19(b),22(b))

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- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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- Definition

Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).

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- Definition

The cash inflow from a borrowing with the highest claim on the assets of the entity in case of bankruptcy or liquidation (with maturities initially due after one year or beyond the operating cycle, if longer).

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-Glossary Financing Activities

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- Definition

Debt Instrument, Term, Additional Period

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No definition available.

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- Definition

Public offering price as a percent of par.

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No definition available.

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SENIOR NOTES PAYABLE AND OTHER DEBT - Unsecured Revolving Credit Facility and Unsecured Term Loans (Details)	1 Months Ended			6 Months Ended
	Jul. 24, 2015 USD ($)	Jan. 31, 2015 CAD	Jan. 31, 2015 USD ($)	Jun. 30, 2015 USD ($)	May. 31, 2015 USD ($)	Jan. 31, 2015 USD ($)
Unsecured revolving credit facilities
Debt instruments
Line of credit facility, current borrowing capacity				$ 2,000,000,000.0
Debt Instrument, Term, Additional Period				1 year
Amount outstanding				$ 583,800,000
Letters of credit outstanding				14,900,000
Remaining borrowing capacity				$ 1,400,000,000
Unsecured revolving credit facilities \| LIBOR
Debt instruments
Debt instrument, basis spread on variable rate				1.00%
Unsecured Term Loan Due 2018
Debt instruments
Line of credit facility, current borrowing capacity				$ 200,000,000.0
Debt instrument, term of loan (in years)				4 years
Unsecured Term Loan Due 2018 \| LIBOR
Debt instruments
Debt instrument, basis spread on variable rate				1.05%
Unsecured Term Loan Due 2019
Debt instruments
Line of credit facility, current borrowing capacity				$ 800,000,000.0
Debt instrument, term of loan (in years)				5 years
Unsecured Term Loan Due 2019 \| LIBOR
Debt instruments
Debt instrument, basis spread on variable rate				1.05%
Unsecured line of credit
Debt instruments
Line of credit facility, maximum borrowing capacity (up to $3.5 billion)				$ 3,500,000,000.0
Senior Notes \| 3.500% Senior Notes due 2025
Debt instruments
Debt instrument, face amount						$ 600,000,000.0
Interest rate (as a percent)		3.50%				3.50%
Public offering price as a percent of par		99.663%				99.663%
Proceeds from issuance of senior long-term debt			$ 598,000,000
Senior Notes \| 4.375% Senior Notes due 2045
Debt instruments
Debt instrument, face amount						$ 300,000,000.0
Interest rate (as a percent)		4.375%				4.375%
Public offering price as a percent of par		99.50%				99.50%
Proceeds from issuance of senior long-term debt			$ 298,500,000
Senior Notes \| 6% Senior Notes due 2015
Debt instruments
Debt instrument, face amount					$ 234,400,000.0
Interest rate (as a percent)					6.00%
Senior Notes \| Ventas Canada Finance Limited Series C Senior Notes, Due 2022 \| Ventas Canada Finance Limited
Debt instruments
Debt instrument, face amount \| CAD		CAD 250,000,000.0
Interest rate (as a percent)		3.30%				3.30%
Public offering price as a percent of par		99.992%				99.992%
Proceeds from issuance of senior long-term debt \| CAD		CAD 250,000,000
Subsequent Event \| Senior Notes \| 4.125% Senior Notes due 2026
Debt instruments
Debt instrument, face amount	$ 500,000,000.0
Interest rate (as a percent)	4.125%
Public offering price as a percent of par	99.218%
Proceeds from issuance of senior long-term debt	$ 496,100,000