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INVESTMENTS IN UNCONSOLIDATED ENTITIES (Details) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2025 USD ($) board_member	Jun. 30, 2024 USD ($)	Jun. 30, 2025 USD ($) board_member property	Jun. 30, 2024 USD ($)	Dec. 31, 2024 USD ($)
Equity method investments
Total investments in unconsolidated real estate entities	$ 626,571		$ 626,571		$ 626,122
Ownership percentage, threshold (may have less than)	100.00%		100.00%
Value of assets acquired			$ 109,000
Outpatient Medical Buildings
Equity method investments
Number of real estate properties acquired \| property			2
Senior Housing Community
Equity method investments
Number of real estate properties acquired \| property			1
Management Service
Equity method investments
Management fees	$ 3,900	$ 3,900	$ 7,800	$ 7,700
Atria
Equity method investments
Ownership percentage	34.00%		34.00%
Number of board members appointed \| board_member	2		2
Ardent
Equity method investments
Ownership percentage	6.70%		6.70%
Equity method investment, total voting power	4.00%		4.00%
Number of board members nominated \| board_member	1		1
Unconsolidated Properties \| Ventas Fund
Equity method investments
Total investments in unconsolidated real estate entities	$ 274,774		$ 274,774		$ 267,202
Ownership percentage	20.00%		20.00%		20.00%
Unconsolidated Properties \| Pension Fund Joint Venture
Equity method investments
Total investments in unconsolidated real estate entities	$ 11,118		$ 11,118		$ 11,939
Ownership percentage	25.00%		25.00%		25.00%
Unconsolidated Properties \| Research & Innovation Development Joint Venture
Equity method investments
Total investments in unconsolidated real estate entities	$ 301,526		$ 301,526		$ 309,499
Ownership percentage	53.00%		53.00%		53.00%
Unconsolidated Properties \| Ventas Investment Management platform
Equity method investments
Total investments in unconsolidated real estate entities	$ 587,418		$ 587,418		$ 588,640
Unconsolidated Properties \| Atrium Health And Wake Forest Joint Venture
Equity method investments
Total investments in unconsolidated real estate entities	$ 38,563		$ 38,563		$ 36,881
Ownership percentage	48.50%		48.50%		48.50%
Unconsolidated Properties \| All other
Equity method investments
Total investments in unconsolidated real estate entities	$ 590		$ 590		$ 601
Unconsolidated Properties \| All other \| Minimum
Equity method investments
Ownership percentage	34.00%		34.00%		34.00%
Unconsolidated Properties \| All other \| Maximum
Equity method investments
Ownership percentage	37.50%		37.50%		37.50%