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INVESTMENTS IN UNCONSOLIDATED ENTITIES (Details) $ in Thousands	1 Months Ended	3 Months Ended		6 Months Ended
	Jul. 31, 2024 USD ($)	Jun. 30, 2024 USD ($) board_member	Jun. 30, 2023 USD ($)	Jun. 30, 2024 USD ($) board_member	Jun. 30, 2023 USD ($)	Dec. 31, 2023 USD ($)
Equity method investments
Total investments in unconsolidated real estate entities		$ 608,844		$ 608,844		$ 598,206
Ownership percentage, threshold (may have less than)		100.00%		100.00%
Proceeds from real estate disposals				$ 238,091	$ 64,405
Dispositions
Equity method investments
Proceeds from real estate disposals				234,100
SHOP
Equity method investments
Value of assets acquired				327,400
Subsequent Event \| Senior Housing Community \| Ventas Life Science & Healthcare Real Estate Fund
Equity method investments
Payments to acquire real estate	$ 50,000
Subsequent Event \| Dispositions
Equity method investments
Proceeds from real estate disposals	$ 2,100
Management Service
Equity method investments
Management fees		$ 3,900	$ 3,600	$ 7,700	$ 7,200
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		7.50%		7.50%
Number of board members appointed \| board_member		1		1
Number of board members nominated \| board_member		1		1
Ardent \| Subsequent Event
Equity method investments
Ownership percentage	6.50%
Equity method investment, total voting power	4.00%
Unconsolidated Properties \| Ventas Life Science & Healthcare Real Estate Fund
Equity method investments
Total investments in unconsolidated real estate entities		$ 262,374		$ 262,374		$ 264,442
Ownership percentage		20.10%		20.10%		20.10%
Unconsolidated Properties \| Pension Fund Joint Venture
Equity method investments
Total investments in unconsolidated real estate entities		$ 19,125		$ 19,125		$ 22,169
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		$ 290,619		$ 290,619		$ 275,829
Ownership percentage		53.00%		53.00%		53.00%
Unconsolidated Properties \| Ventas Investment Management platform
Equity method investments
Total investments in unconsolidated real estate entities		$ 572,118		$ 572,118		$ 562,440
Unconsolidated Properties \| Atrium Health And Wake Forest Joint Venture
Equity method investments
Total investments in unconsolidated real estate entities		$ 36,112		$ 36,112		$ 35,137
Ownership percentage		48.50%		48.50%		48.50%
Unconsolidated Properties \| All other
Equity method investments
Total investments in unconsolidated real estate entities		$ 614		$ 614		$ 629
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%