CONDENSED CONSOLIDATED STATEMENTS OF EQUITY - USD ($) $ in Thousands	Total	Common stock:	Additional paid-in-capital:	Treasury stock:	Accumulated deficit:	Noncontrolling interest:
Balance at beginning of period at Dec. 31, 2021	$ 699,623	$ 1,975	$ 4,208,675	$ (102,774)	$ (3,410,474)	$ 2,221
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Restricted stock and restricted stock units, net		9	(9)
Shares withheld for employee taxes		(6)	(4,239)
Compensation expense related to restricted stock grants			7,504
Net income (loss) attributable to Brookdale Senior Living Inc. common stockholders	(184,431)				(184,431)
Net income (loss) attributable to noncontrolling interest	(184,315)					116
Balance at end of period at Jun. 30, 2022	518,567	$ 1,978	4,211,931	(102,774)	(3,594,905)	2,337
Balance at beginning of period (in shares) at Dec. 31, 2021		186,958,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Restricted stock and restricted stock units, net (in shares)		907,000
Shares withheld for employee taxes (in shares)		(609,000)
Balances at end of period (in shares) at Jun. 30, 2022		187,256,000
Balance at beginning of period at Mar. 31, 2022	599,279	$ 1,978	4,208,360	(102,774)	(3,510,487)	2,202
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Shares withheld for employee taxes			(48)
Compensation expense related to restricted stock grants			3,619
Net income (loss) attributable to Brookdale Senior Living Inc. common stockholders	(84,418)				(84,418)
Net income (loss) attributable to noncontrolling interest	(84,283)					135
Balance at end of period at Jun. 30, 2022	518,567	$ 1,978	4,211,931	(102,774)	(3,594,905)	2,337
Balance at beginning of period (in shares) at Mar. 31, 2022		187,283,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Restricted stock and restricted stock units, net (in shares)		(18,000)
Shares withheld for employee taxes (in shares)		(9,000)
Balances at end of period (in shares) at Jun. 30, 2022		187,256,000
Balance at beginning of period at Dec. 31, 2022	584,153	$ 1,978	4,332,302	(102,774)	(3,648,901)	1,548
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Restricted stock and restricted stock units, net		16	(16)
Shares withheld for employee taxes		(6)	(1,855)
Compensation expense related to restricted stock grants			6,073
Net income (loss) attributable to Brookdale Senior Living Inc. common stockholders	(49,059)				(49,059)
Net income (loss) attributable to noncontrolling interest	(49,089)					(30)
Balance at end of period at Jun. 30, 2023	$ 539,276	$ 1,988	4,336,504	(102,774)	(3,697,960)	1,518
Balance at beginning of period (in shares) at Dec. 31, 2022	187,249,466	187,249,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Restricted stock and restricted stock units, net (in shares)		1,551,000
Shares withheld for employee taxes (in shares)		(565,000)
Balances at end of period (in shares) at Jun. 30, 2023	188,235,124	188,235,000
Balance at beginning of period at Mar. 31, 2023	$ 540,854	$ 1,988	4,333,556	(102,774)	(3,693,450)	1,534
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Shares withheld for employee taxes			(21)
Compensation expense related to restricted stock grants			2,969
Net income (loss) attributable to Brookdale Senior Living Inc. common stockholders	(4,510)				(4,510)
Net income (loss) attributable to noncontrolling interest	(4,526)					(16)
Balance at end of period at Jun. 30, 2023	$ 539,276	$ 1,988	$ 4,336,504	$ (102,774)	$ (3,697,960)	$ 1,518
Balance at beginning of period (in shares) at Mar. 31, 2023		188,235,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Restricted stock and restricted stock units, net (in shares)		6,000
Shares withheld for employee taxes (in shares)		(6,000)
Balances at end of period (in shares) at Jun. 30, 2023	188,235,124	188,235,000