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- Definition

Debt Instrument, Covenant, Percentage Of Cumulative Adjusted Funds

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Line Of Credit Facility, Maximum Borrowing Capacity, Foreign Currency

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Line Of Credit Facility, Number Of Extension Options

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Line Of Credit Facility, Optional Extension Period

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- Definition

Amount of amortization expense attributable to debt discount (premium) and debt issuance costs.

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

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Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

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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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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.

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Fixed interest rate related to the interest rate derivative.

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No definition available.

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- Definition

The number of derivative instruments of a particular group held by the entity.

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Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity.

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- Definition

Amount of the cost of borrowed funds accounted for as interest expense for debt.

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Amount of interest payable on debt, including, but not limited to, trade payables.

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- Definition

The effective interest rate at the end of the reporting period.

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

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The fee, expressed as a percentage of the line of credit facility, for available but unused credit capacity under the credit facility.

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The cash outflow to repay long-term debt that is wholly or partially secured by collateral. Excludes repayments of tax exempt secured debt.

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DEBT - Narrative (Details)		3 Months Ended	12 Months Ended
DEBT - Narrative (Details)	Aug. 17, 2017 USD ($)	Dec. 31, 2018 USD ($) instrument extension_option	Dec. 31, 2018 USD ($) instrument extension_option	Dec. 31, 2017 USD ($)	Dec. 31, 2016 USD ($)	Aug. 17, 2017 CAD ($)	Aug. 10, 2016 USD ($) agreement	Aug. 10, 2016 CAD ($) agreement	Jun. 10, 2015 CAD ($)	Oct. 10, 2014 USD ($)	Jan. 23, 2014 USD ($)	May 23, 2013 USD ($)
Debt Instrument [Line Items]
Loss on extinguishment of debt			$ 2,917,000	$ 553,000	$ 556,000
Repayments of fixed rate secured debt			140,338,000	4,145,000	14,768,000
Long-term debt		$ 3,233,164,000	3,233,164,000
Interest expense			147,106,000	88,440,000	64,873,000
Non-cash interest expense			10,137,000	7,776,000	$ 5,678,000
Interest payable		$ 24,000,000	$ 24,000,000	24,700,000
Care Capital Properties \| Interest Rate Swap
Debt Instrument [Line Items]
Derivative instruments \| instrument		8	8
5.5% Senior Unsecured Notes due 2021
Debt Instrument [Line Items]
Interest rate		5.50%	5.50%								5.50%
5.5% Senior Unsecured Notes due 2021, Issued January 2014
Debt Instrument [Line Items]
Debt amount											$ 350,000,000.0
Interest rate											5.50%
5.5% Senior Unsecured Notes due 2021, Issued October 2014
Debt Instrument [Line Items]
Debt amount										$ 150,000,000.0
Interest rate										5.50%
5.375% Senior Unsecured Notes Due 2023
Debt Instrument [Line Items]
Debt amount												$ 200,000,000
Interest rate		5.375%	5.375%									5.375%
Senior Unsecured Notes Due 2026
Debt Instrument [Line Items]
Debt amount	$ 500,000,000
Interest rate	5.125%	5.125%	5.125%			5.125%
Required ratio of total unencumbered assets to unsecured debt			150.00%
Senior Unsecured Notes Due 2027
Debt Instrument [Line Items]
Debt amount	$ 100,000,000.0
Interest rate	5.38%	5.38%	5.38%			5.38%
Senior Unsecured Notes due 2021 and 2023
Debt Instrument [Line Items]
Maximum percentage of cumulative Adjusted Funds from Operations permitted to be distributed			95.00%
Required ratio of total unencumbered assets to unsecured debt			150.00%
Prior Revolving Credit Facility
Debt Instrument [Line Items]
Loss on extinguishment of debt				600,000
Prior Revolving Credit Facility \| Revolving Credit Facility
Debt Instrument [Line Items]
Available borrowing capacity		$ 376,000,000	$ 376,000,000
Prior Revolving Credit Facility \| Revolving Credit Facility \| LIBOR
Debt Instrument [Line Items]
Basis spread on variable rate			1.00%
Prior Revolving Credit Facility \| Revolving Credit Facility \| Federal Funds Rate
Debt Instrument [Line Items]
Basis spread on variable rate			0.50%
Fourth Amended and Restated Credit Agreement \| Revolving Credit Facility
Debt Instrument [Line Items]
Borrowing capacity (up to)	$ 1,000,000,000.0
Borrowing capacity in certain foreign currencies (up to)	$ 175,000,000
Number of optional extensions \| extension_option		2	2
Optional extension period			6 months
Interest rate		3.75%	3.75%
Fourth Amended and Restated Credit Agreement \| Revolving Credit Facility \| Minimum
Debt Instrument [Line Items]
Annum percent unused borrowing fee	0.125%
Fourth Amended and Restated Credit Agreement \| Revolving Credit Facility \| Maximum
Debt Instrument [Line Items]
Annum percent unused borrowing fee	0.30%
Fourth Amended and Restated Credit Agreement \| Revolving Credit Facility \| LIBOR \| Minimum
Debt Instrument [Line Items]
Basis spread on variable rate	0.875%
Fourth Amended and Restated Credit Agreement \| Revolving Credit Facility \| LIBOR \| Maximum
Debt Instrument [Line Items]
Basis spread on variable rate	1.65%
Fourth Amended and Restated Credit Agreement \| Revolving Credit Facility \| Base Rate \| Minimum
Debt Instrument [Line Items]
Basis spread on variable rate	0.00%
Fourth Amended and Restated Credit Agreement \| Revolving Credit Facility \| Base Rate \| Maximum
Debt Instrument [Line Items]
Basis spread on variable rate	0.65%
Fourth Amended and Restated Credit Agreement \| Line of Credit
Debt Instrument [Line Items]
Borrowing capacity (up to)	$ 2,500,000,000.0
U.S. Dollar Term Loan
Debt Instrument [Line Items]
Debt amount							$ 245,000,000.0
U.S. Dollar Term Loan \| LIBOR \| Minimum
Debt Instrument [Line Items]
Basis spread on variable rate	0.90%
U.S. Dollar Term Loan \| LIBOR \| Maximum
Debt Instrument [Line Items]
Basis spread on variable rate	1.90%
U.S. Dollar Term Loan \| Base Rate \| Minimum
Debt Instrument [Line Items]
Basis spread on variable rate	0.00%
U.S. Dollar Term Loan \| Base Rate \| Maximum
Debt Instrument [Line Items]
Basis spread on variable rate	0.90%
U.S. Dollar Term Loan \| CDOR \| Minimum
Debt Instrument [Line Items]
Basis spread on variable rate	0.90%
U.S. Dollar Term Loan \| CDOR \| Maximum
Debt Instrument [Line Items]
Basis spread on variable rate	1.90%
U.S. Dollar Term Loan \| Interest Rate Swap
Debt Instrument [Line Items]
Interest rate swap, fixed							0.90%	0.90%
Derivative instruments \| agreement							2	2
U.S. Dollar Term Loan \| Redemption Period One
Debt Instrument [Line Items]
Debt amount	$ 1,100,000,000
U.S. Dollar Term Loan \| Redemption Period Two
Debt Instrument [Line Items]
Debt amount	200,000,000
U.S. Dollar Term Loan \| Care Capital Properties
Debt Instrument [Line Items]
Debt amount		$ 600,000,000	$ 600,000,000
Canadian Term Loan
Debt Instrument [Line Items]
Debt amount						$ 125,000,000		$ 35,000,000.0
Canadian Term Loan \| Interest Rate Swap
Debt Instrument [Line Items]
Interest rate swap, fixed		1.31%	1.31%				0.93%	0.93%
Derivative instruments \| agreement							1	1
Prior Canadian Term Loan
Debt Instrument [Line Items]
Debt amount									$ 90,000,000.0
Interest rate swap, fixed									1.59%
Secured Indebtedness
Debt Instrument [Line Items]
Debt amount		$ 117,464,000	$ 117,464,000	$ 259,202,000
Loss on extinguishment of debt		900,000
Repayments of fixed rate secured debt		37,600,000
Long-term debt		117,464,000	117,464,000
Secured Indebtedness \| Variable Rate Secured Term Loan \| Care Capital Properties
Debt Instrument [Line Items]
Debt amount	$ 98,500,000.0
Loss on extinguishment of debt		2,000,000
Secured Indebtedness \| Variable Rate Secured Term Loan \| Care Capital Properties \| LIBOR
Debt Instrument [Line Items]
Basis spread on variable rate	1.80%
Line of Credit
Debt Instrument [Line Items]
Long-term debt		$ 624,000,000	$ 624,000,000