OTHER ASSETS (Details) - USD ($) $ / shares in Units, $ in Thousands, shares in Millions	Dec. 31, 2022	Dec. 31, 2021	Jul. 31, 2020
Other Assets Disclosure [Line Item]
Straight-line rent receivables	$ 187,536	$ 176,877
Non-mortgage loans receivable, net	24,338	19,024
Stock warrants	23,621	48,884
Other intangibles, net	6,393	7,270
Investment in unconsolidated operating entities	95,363	73,602
Other	272,572	239,412
Total other assets	$ 609,823	$ 565,069
Brookdale Senior Living
Other Assets Disclosure [Line Item]
Non-mortgage loans receivable, net			$ 45,000
Stock warrants			$ 28,000
Shares of common stock (in shares)	16.3		16.3
Exercise price (usd per share)	$ 3.00		$ 3.00