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INVESTMENTS IN UNCONSOLIDATED ENTITIES (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2024 USD ($) board_member	Mar. 31, 2023 USD ($)	Dec. 31, 2023 USD ($)	Sep. 30, 2023 board_member
Equity method investments
Total investments in unconsolidated real estate entities	$ 601,406		$ 598,206
Management Service
Equity method investments
Management fees	$ 3,900	$ 3,600
Atria
Equity method investments
Ownership percentage	34.00%
Number of board members appointed \| board_member	2
Ardent
Equity method investments
Ownership percentage	7.50%
Number of board members appointed \| board_member				1
Unconsolidated Properties \| Ventas Life Science & Healthcare Real Estate Fund
Equity method investments
Total investments in unconsolidated real estate entities	$ 265,394		$ 264,442
Ownership percentage	20.10%		20.10%
Unconsolidated Properties \| Pension Fund Joint Venture
Equity method investments
Total investments in unconsolidated real estate entities	$ 20,364		$ 22,169
Ownership percentage	25.00%		25.00%
Unconsolidated Properties \| Research & Innovation Development Joint Venture
Equity method investments
Total investments in unconsolidated real estate entities	$ 279,282		$ 275,829
Ownership percentage	53.00%		53.00%
Unconsolidated Properties \| Ventas Investment Management platform
Equity method investments
Total investments in unconsolidated real estate entities	$ 565,040		$ 562,440
Unconsolidated Properties \| Atrium Health And Wake Forest Joint Venture
Equity method investments
Total investments in unconsolidated real estate entities	$ 35,737		$ 35,137
Ownership percentage	48.50%		48.50%
Unconsolidated Properties \| All other
Equity method investments
Total investments in unconsolidated real estate entities	$ 629		$ 629
Unconsolidated Properties \| All other \| Minimum
Equity method investments
Ownership percentage	34.00%		34.00%
Unconsolidated Properties \| All other \| Maximum
Equity method investments
Ownership percentage	37.50%		37.50%