Debt instrument extension period duration.

No definition available.

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- Definition

Debt instrument number of available extensions.

+ References

No definition available.

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Balance Type:	na
Period Type:	instant

- Definition

Represents the carrying value of senior notes and other unsecured borrowings net.

+ References

No definition available.

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

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

+ References

No definition available.

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- Definition

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.

+ References

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Data Type:	xbrli:monetaryItemType
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Period Type:	instant

- Definition

States whether the entity was in compliance with the debt covenants throughout the reporting period, and describes facts and circumstances of any compliance failure.

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- Definition

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

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- Definition

Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium.

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- Definition

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

+ References

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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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Date when the debt instrument is scheduled to be fully repaid, in YYYY-MM-DD format.

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Description of the maturity date of the debt instrument including whether the debt matures serially and, if so, a brief description of the serial maturities.

+ References

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Amount, after accumulated amortization, of debt discount.

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- Definition

Amount, after accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

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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

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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- 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.

+ References

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Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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- Definition

Amount of long-term loans payable classified as other.

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The fair value, as of the date of each statement of financial position presented, of real estate which is owned but transferred to serve as collateral for the payment of the related debt obligation, and that is reclassified and separately reported in the statement of financial position because the transferee has the right by contract or custom to sell or re-pledge it.

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The cash outflow for a long-term debt where the holder has highest claim on the entity's asset in case of bankruptcy or liquidation during the period.

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Carrying value as of the balance sheet date, including the current and noncurrent portions, of collateralized debt obligations (with maturities initially due after one year or beyond the operating cycle, if longer). Such obligations include mortgage loans, chattel loans, and any other borrowings secured by assets of the borrower.

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Including the current and noncurrent portions, carrying value as of the balance sheet date of uncollateralized debt obligations (with maturities initially due after one year or beyond the operating cycle if longer).

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BORROWING ARRANGEMENTS (Schedule of Borrowings) (Details) $ in Thousands, £ in Millions			1 Months Ended		3 Months Ended	12 Months Ended
	Apr. 30, 2021 USD ($) item	Apr. 17, 2020	Mar. 31, 2021 USD ($)	May 25, 2017 USD ($)	Mar. 31, 2021 USD ($)	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)	May 25, 2017 GBP (£)	Dec. 16, 2015 USD ($)
Debt Instrument [Line Items]
Total secured borrowings						$ 362,081	$ 369,524
Revolving credit facility							101,158
Total senior notes and other unsecured borrowings - net						4,891,455	4,698,570
Total secured and unsecured borrowings - net						5,253,536	5,169,252
Loss on extinguishment of debt						$ 30,763	$ 13,340
Debt instrument, covenant compliance						As of December 31, 2021 and 2020, we were in compliance with all affirmative and negative covenants, including financial covenants, for our secured and unsecured borrowings	As of December 31, 2021 and 2020, we were in compliance with all affirmative and negative covenants, including financial covenants, for our secured and unsecured borrowings
London Interbank Offered Rate (LIBOR) [Member]
Debt Instrument [Line Items]
Basis spread on variable rate		2.75%
Hud Mortgage
Debt Instrument [Line Items]
Assets pledged as collateral, fair value						$ 544,500
4.375% notes due 2023
Debt Instrument [Line Items]
Rate						4.375%	4.375%
4.950% notes due 2024
Debt Instrument [Line Items]
Rate						4.95%	4.95%
4.50% notes due 2025
Debt Instrument [Line Items]
Rate						4.50%	4.50%
5.25% notes due 2026
Debt Instrument [Line Items]
Rate						5.25%	5.25%
4.50% notes due 2027
Debt Instrument [Line Items]
Rate						4.50%	4.50%
4.75% notes due 2028
Debt Instrument [Line Items]
Rate						4.75%	4.75%
3.625% notes due 2029
Debt Instrument [Line Items]
Rate						3.625%	3.625%
3.375% notes due 2031
Debt Instrument [Line Items]
Maturity						2031
Rate						3.375%	3.375%
Long-term debt, gross						$ 700,000	$ 700,000
3.25% notes due 2033
Debt Instrument [Line Items]
Maturity						2033
Rate						3.25%
Long-term debt, gross						$ 700,000
Secured Debt [Member] \| Hud Mortgage
Debt Instrument [Line Items]
Rate						3.01%
Total secured borrowings						$ 359,806	367,249
Secured Debt [Member] \| Term Loan [Member]
Debt Instrument [Line Items]
Maturity						2022
Rate						3.75%
Total secured borrowings						$ 2,275	2,275
Unsecured Debt [Member]
Debt Instrument [Line Items]
Deferred financing costs - net						(26,980)	(26,421)
Discount - net						(31,565)	(31,709)
Total unsecured borrowings - net						$ 4,891,455	4,799,728
Unsecured Debt [Member] \| U.S. term loan
Debt Instrument [Line Items]
Total term loans - net				$ 425,000
Unsecured Debt [Member] \| Sterling term loan
Debt Instrument [Line Items]
Maturity						N/A
Total term loans - net							136,700	£ 100
Unsecured Debt [Member] \| Omega OP Term Loan Facility
Debt Instrument [Line Items]
Maturity						2025
Rate						3.29%
Total term loans - net	$ 50,000					$ 50,000
Debt instrument number of available extensions \| item	2
Debt instrument extension period duration	6 months
Debt instrument, maturity date						Apr. 30, 2025
Unsecured Debt [Member] \| Omega OP Term Loan Facility \| London Interbank Offered Rate (LIBOR) [Member]
Debt Instrument [Line Items]
Debt instrument, interest rate, effective percentage						1.84%
Unsecured Debt [Member] \| 2017 Omega Op Term Loan [Member]
Debt Instrument [Line Items]
Maturity						N/A
Total term loans - net							50,000
Unsecured Debt [Member] \| 2017 Omega Op Term Loan Replaced [Member]
Debt Instrument [Line Items]
Total term loans - net				100,000
Unsecured Debt [Member] \| Amended 2015 Term Loan Facility
Debt Instrument [Line Items]
Total term loans - net				$ 250,000					$ 250,000
Unsecured Debt [Member] \| Senior Notes And Other Unsecured Borrowings Net [Member]
Debt Instrument [Line Items]
Total senior notes and other unsecured borrowings - net						$ 4,891,455	4,698,570
Unsecured Debt [Member] \| Subordinated debt
Debt Instrument [Line Items]
Maturity						N/A
Long-term debt, gross							20,000
Senior Notes [Member] \| 4.375% notes due 2023
Debt Instrument [Line Items]
Maturity						2023
Rate						4.375%
Long-term debt, gross						$ 350,000	700,000
Repayments of senior debt						$ 350,000
Loss on extinguishment of debt					$ 30,600
Senior Notes [Member] \| 4.950% notes due 2024
Debt Instrument [Line Items]
Maturity						2024
Rate						4.95%
Long-term debt, gross						$ 400,000	400,000
Senior Notes [Member] \| 4.50% notes due 2025
Debt Instrument [Line Items]
Maturity						2025
Rate						4.50%
Long-term debt, gross						$ 400,000	400,000
Senior Notes [Member] \| 5.25% notes due 2026
Debt Instrument [Line Items]
Maturity						2026
Rate						5.25%
Long-term debt, gross						$ 600,000	600,000
Senior Notes [Member] \| 4.50% notes due 2027
Debt Instrument [Line Items]
Maturity						2027
Rate						4.50%
Long-term debt, gross						$ 700,000	700,000
Senior Notes [Member] \| 4.75% notes due 2028
Debt Instrument [Line Items]
Maturity						2028
Rate						4.75%
Long-term debt, gross						$ 550,000	550,000
Senior Notes [Member] \| 3.625% notes due 2029
Debt Instrument [Line Items]
Maturity						2029
Rate						3.625%
Long-term debt, gross						$ 500,000	500,000
Senior Notes [Member] \| 3.25% notes due 2033
Debt Instrument [Line Items]
Maturity			2033		2033	2033
Rate			3.25%		3.25%
Debt instrument, face amount			$ 700,000		$ 700,000
Minimum [Member] \| Secured Debt [Member] \| Hud Mortgage
Debt Instrument [Line Items]
Maturity						2046
Minimum [Member] \| Unsecured Debt [Member] \| Omega OP Term Loan Facility
Debt Instrument [Line Items]
Basis spread on variable rate	0.85%
Minimum [Member] \| Unsecured Debt [Member] \| 2017 Omega Op Term Loan Replaced [Member]
Debt Instrument [Line Items]
Basis spread on variable rate				0.90%
Minimum [Member] \| Unsecured Debt [Member] \| Amended 2015 Term Loan Facility
Debt Instrument [Line Items]
Basis spread on variable rate				1.40%
Maximum [Member] \| Secured Debt [Member] \| Hud Mortgage
Debt Instrument [Line Items]
Maturity						2052
Maximum [Member] \| Unsecured Debt [Member] \| Omega OP Term Loan Facility
Debt Instrument [Line Items]
Basis spread on variable rate	1.85%
Maximum [Member] \| Unsecured Debt [Member] \| 2017 Omega Op Term Loan Replaced [Member]
Debt Instrument [Line Items]
Basis spread on variable rate				1.90%
Maximum [Member] \| Unsecured Debt [Member] \| Amended 2015 Term Loan Facility
Debt Instrument [Line Items]
Basis spread on variable rate				2.35%
Revolving Credit Facility \| Unsecured Debt [Member]
Debt Instrument [Line Items]
Maturity						2025
Rate						1.30%
Maximum borrowing capacity	$ 1,450,000
Basis spread on variable rate	0.1193%
Debt instrument number of available extensions \| item	2
Debt instrument extension period duration	6 months
Debt instrument, maturity date	Apr. 30, 2025
Revolving Credit Facility \| Unsecured Debt [Member] \| 2017 Revolving Credit Facility Replaced [Member]
Debt Instrument [Line Items]
Maturity						N/A
Revolving credit facility							$ 101,158
Maximum borrowing capacity	$ 1,250,000
Revolving Credit Facility \| Minimum [Member] \| Unsecured Debt [Member]
Debt Instrument [Line Items]
Basis spread on variable rate	0.95%
Revolving Credit Facility \| Maximum [Member] \| Unsecured Debt [Member]
Debt Instrument [Line Items]
Maximum borrowing capacity	$ 2,500,000
Basis spread on variable rate	1.85%