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BORROWING ACTIVITIES AND ARRANGEMENTS (Schedule of Borrowings) (Details) $ in Thousands							1 Months Ended	3 Months Ended		9 Months Ended		12 Months Ended
	Oct. 15, 2025 USD ($)	Sep. 30, 2025 USD ($) facility item	Jun. 30, 2025 item	Jun. 20, 2025 USD ($)	Apr. 29, 2025 USD ($)	Jan. 15, 2025 USD ($)	Jul. 31, 2025 USD ($) item	Sep. 30, 2025 USD ($) facility item	Sep. 30, 2024 USD ($)	Sep. 30, 2025 USD ($) facility item	Sep. 30, 2024 USD ($)	Dec. 31, 2024 USD ($)	Sep. 29, 2025 USD ($)	Mar. 31, 2021 USD ($)	Oct. 31, 2020 USD ($)
Debt Instrument [Line Items]
Total secured borrowings		$ 253,089						$ 253,089		$ 253,089		$ 243,310
Total senior notes and other unsecured borrowings - net		4,741,457						4,741,457		4,741,457		4,595,549
Total secured and unsecured borrowings - net		4,994,546						4,994,546		4,994,546		4,838,859
Real estate assets - net		$ 6,742,124						6,742,124		6,742,124		$ 6,339,158
Loss on extinguishment of debt								$ 7	$ 137	$ 7	$ 1,633
Debt instrument, covenant compliance										As of September 30, 2025 and December 31, 2024, we were in compliance with all applicable covenants for our borrowings		As of September 30, 2025 and December 31, 2024, we were in compliance with all applicable covenants for our borrowings
Number of Facilities | facility		1,047						1,047		1,047
Repayments of Long-term Debt										$ 528,496	$ 1,142,788
Assisted Living Facilities [Member]
Debt Instrument [Line Items]
Number of Facilities | facility		343						343		343
4.50% notes due 2025
Debt Instrument [Line Items]
Rate		4.50%						4.50%		4.50%		4.50%
5.25% notes due 2026
Debt Instrument [Line Items]
Rate		5.25%						5.25%		5.25%		5.25%
5.20% notes due 2030
Debt Instrument [Line Items]
Rate		5.20%						5.20%		5.20%
4.50% notes due 2027
Debt Instrument [Line Items]
Rate		4.50%						4.50%		4.50%		4.50%
4.75% notes due 2028
Debt Instrument [Line Items]
Rate		4.75%						4.75%		4.75%		4.75%
3.63% notes due 2029
Debt Instrument [Line Items]
Rate		3.63%						3.63%		3.63%		3.63%
3.38% notes due 2031
Debt Instrument [Line Items]
Rate		3.38%						3.38%		3.38%		3.38%
3.25% notes due 2033
Debt Instrument [Line Items]
Rate		3.25%						3.25%		3.25%		3.25%
Secured Debt [Member]
Debt Instrument [Line Items]
Deferred financing costs - net		$ (2,219)						$ (2,219)		$ (2,219)		$ (3,753)
Premium - net		9,379						9,379		9,379		15,915
Total secured borrowings		$ 253,089						$ 253,089		$ 253,089		243,310
Secured Debt [Member] | Mortgage Loan Due 2026 [Member]
Debt Instrument [Line Items]
Maturity										2026
Rate		9.35%						9.35%		9.35%
Total secured borrowings		$ 245,929						$ 245,929		$ 245,929		231,148
Unsecured Debt [Member]
Debt Instrument [Line Items]
Deferred financing costs - net		(17,267)						(17,267)		(17,267)		(14,843)
Discount - net		(19,776)						(19,776)		(19,776)		(18,108)
Total senior notes and other unsecured borrowings - net		4,741,457						4,741,457		4,741,457		4,595,549
Total unsecured borrowings - net		$ 4,741,457						$ 4,741,457		$ 4,741,457		4,595,549
Unsecured Debt [Member] | Omega OP Term Loan Facility
Debt Instrument [Line Items]
Maturity										2025
Total term loans - net												50,000
Repayments of Long-term Debt					$ 50,000
Unsecured Debt [Member] | 2026 Term Loan [Member]
Debt Instrument [Line Items]
Maturity										2026
Rate		5.25%						5.25%		5.25%
Long-term debt, gross		$ 428,500					$ 428,500	$ 428,500		$ 428,500		428,500
Debt instrument extension period duration			12 months
Debt instrument, maturity date			Aug. 08, 2025				Aug. 08, 2026
Derivative, Variable Interest Rate		4.047%						4.047%		4.047%
Debt Instrument, Variable Interest Rate, Type [Extensible Enumeration]										us-gaap:SecuredOvernightFinancingRateSofrMember
Number of Extension Options | item			2
Number of Extension Options Exercised | item							1
Interest rate reduction amount		0.35%
Step-up pricing percentage for extension periods		0.10%
Unsecured Debt [Member] | 2025 Omega Credit Agreement
Debt Instrument [Line Items]
Maximum borrowing capacity		$ 3,000,000						$ 3,000,000		$ 3,000,000
Debt issuance costs, gross		19,800						19,800		$ 19,800
Unsecured Debt [Member] | Term Loan 2028
Debt Instrument [Line Items]
Maturity										2028
Maximum borrowing capacity		$ 300,000						$ 300,000		$ 300,000
Basis spread on variable rate								1.20%
Debt instrument number of available extensions | item		2						2		2
Debt instrument extension period duration		12 months
Debt instrument, maturity date		Sep. 29, 2028
Description of variable rate basis		SOFR
Debt issuance costs, gross		$ 2,000						$ 2,000		$ 2,000
Unsecured Debt [Member] | Alternative Currencies Sublimit
Debt Instrument [Line Items]
Maximum borrowing capacity		$ 600,000						$ 600,000		$ 600,000
Senior Notes [Member] | 4.50% notes due 2025
Debt Instrument [Line Items]
Maturity										2025
Rate		4.50%				4.50%		4.50%		4.50%
Long-term debt, gross												400,000
Repayments of senior debt						$ 400,000
Senior Notes [Member] | 5.25% notes due 2026
Debt Instrument [Line Items]
Maturity										2026
Rate	5.25%	5.25%						5.25%		5.25%
Long-term debt, gross		$ 600,000						$ 600,000		$ 600,000		600,000
Repayments of senior debt	$ 600,000
Senior Notes [Member] | 5.20% notes due 2030
Debt Instrument [Line Items]
Maturity										2030
Rate		5.20%		5.20%				5.20%		5.20%
Discount - net				$ (5,300)
Long-term debt, gross		$ 600,000						$ 600,000		$ 600,000
Debt instrument, face amount				$ 600,000
Debt instrument, maturity date				Jul. 01, 2030
Debt instrument issuance percentage of face value				99.118%
Debt issuance costs, gross				$ 5,600
Senior Notes [Member] | 4.50% notes due 2027
Debt Instrument [Line Items]
Maturity										2027
Rate		4.50%						4.50%		4.50%
Long-term debt, gross		$ 700,000						$ 700,000		$ 700,000		700,000
Senior Notes [Member] | 4.75% notes due 2028
Debt Instrument [Line Items]
Maturity										2028
Rate		4.75%						4.75%		4.75%
Long-term debt, gross		$ 550,000						$ 550,000		$ 550,000		550,000
Senior Notes [Member] | 3.63% notes due 2029
Debt Instrument [Line Items]
Maturity										2029
Rate		3.63%						3.63%		3.63%
Long-term debt, gross		$ 500,000						$ 500,000		$ 500,000		500,000
Senior Notes [Member] | 3.38% notes due 2031
Debt Instrument [Line Items]
Maturity										2031
Rate		3.38%						3.38%		3.38%					3.375%
Long-term debt, gross		$ 700,000						$ 700,000		$ 700,000		700,000
Debt instrument, face amount															$ 700,000
Senior Notes [Member] | 3.25% notes due 2033
Debt Instrument [Line Items]
Maturity										2033
Rate		3.25%						3.25%		3.25%				3.25%
Long-term debt, gross		$ 700,000						$ 700,000		$ 700,000		$ 700,000
Debt instrument, face amount														$ 700,000
Minimum [Member]
Debt Instrument [Line Items]
Basis spread on variable rate		0.80%
Maximum [Member] | Unsecured Debt [Member] | Term Loan 2028
Debt Instrument [Line Items]
Basis spread on variable rate		1.60%
Revolving Credit Facility | Unsecured Debt [Member]
Debt Instrument [Line Items]
Debt instrument, face amount													$ 1,450,000
Revolving Credit Facility | Unsecured Debt [Member] | Revolving Credit Facility 2029
Debt Instrument [Line Items]
Maturity										2029
Maximum borrowing capacity		$ 2,000,000						$ 2,000,000		$ 2,000,000
Basis spread on variable rate								1.05%
Debt instrument number of available extensions | item		2						2		2
Debt instrument extension period duration		6 months
Debt instrument, maturity date		Sep. 28, 2029
Description of variable rate basis		SOFR
Revolving Credit Facility | Minimum [Member] | Unsecured Debt [Member] | Revolving Credit Facility 2029
Debt Instrument [Line Items]
Basis spread on variable rate		0.725%
Facility fee based on debt ratings, percentage		0.125%
Revolving Credit Facility | Maximum [Member] | Unsecured Debt [Member] | Revolving Credit Facility 2029
Debt Instrument [Line Items]
Basis spread on variable rate		1.40%
Facility fee based on debt ratings, percentage		0.30%

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