OTHER ASSETS (Details) - USD ($) $ / shares in Units, $ in Thousands, shares in Millions	Mar. 31, 2024	Dec. 31, 2023	Jul. 31, 2020
Class of Warrant or Right [Line Items]
Straight-line rent receivables	$ 196,254	$ 194,108
Deferred lease costs, net	122,982	118,556
Investment in unconsolidated operating entities	74,626	80,312
Non-mortgage loans receivable, net	29,365	26,152
Other intangibles, net	5,365	5,584
Other	216,820	199,417
Total other assets	$ 714,014	$ 683,410
Brookdale
Class of Warrant or Right [Line Items]
Stock warrants			$ 28,000
Non-mortgage loans receivable, net			$ 45,000
Number of securities called by warrants (in shares)			16.3
Warrants, exercise price (usd per share)	$ 3.00