Other Assets (Details) - USD ($) $ / shares in Units, $ in Thousands, shares in Millions	Dec. 31, 2021	Dec. 31, 2020	Jul. 31, 2020
Other Assets Disclosure [Line Item]
Straight-line rent receivables	$ 176,877	$ 169,711
Non-mortgage loans receivable, net	19,024	57,077
Marketable debt securities	0	237,553
Other intangibles, net	7,270	4,659
Investment in unconsolidated operating entities	73,602	63,768
Other	239,412	224,363
Total other assets	$ 565,069	807,229
Brookdale Senior Living
Other Assets Disclosure [Line Item]
Non-mortgage loans receivable, net			$ 45,000
Stock warrants			$ 28,000
Class of Warrant or Right, Number of Securities Called by Warrants or Rights	16.3		16.3
Class of Warrant or Right, Exercise Price of Warrants or Rights	$ 3.00		$ 3.00
Brookdale Senior Living | Carrying Amount
Other Assets Disclosure [Line Item]
Stock warrants	$ 48,884	$ 50,098