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, 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		187,249,000
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		188,235,000
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		188,235,000
Balance at beginning of period at Dec. 31, 2023	405,153	$ 1,988	4,342,362	(102,774)	(3,837,912)	1,489
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Shares issued for settlement of prepaid stock purchase contracts		67	(67)
Shares issued for warrant exercise		9	(9)
Restricted stock and restricted stock units, net		19	(19)
Shares withheld for employee taxes		(6)	(3,399)
Compensation expense related to restricted stock grants			7,248
Net income (loss) attributable to Brookdale Senior Living Inc. common stockholders	(67,293)				(67,293)
Net income (loss) attributable to noncontrolling interest	(67,323)					(30)
Balance at end of period at Jun. 30, 2024	$ 341,673	$ 2,077	4,346,116	(102,774)	(3,905,205)	1,459
Balance at beginning of period (in shares) at Dec. 31, 2023	188,253,301	188,253,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Shares issued for settlement of prepaid stock purchase contracts (in shares)	6,708,425	6,709,000
Shares issued for warrant exercise (in shares)		942,000
Restricted stock and restricted stock units, net (in shares)		1,873,000
Shares withheld for employee taxes (in shares)		(576,000)
Balances at end of period (in shares) at Jun. 30, 2024	197,201,015	197,201,000
Balance at beginning of period at Mar. 31, 2024	$ 375,448	$ 2,035	4,342,191	(102,774)	(3,867,478)	1,474
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Shares issued for settlement of prepaid stock purchase contracts		32	(32)
Shares issued for warrant exercise		9	(9)
Restricted stock and restricted stock units, net		1	(1)
Shares withheld for employee taxes			(8)
Compensation expense related to restricted stock grants			3,975
Net income (loss) attributable to Brookdale Senior Living Inc. common stockholders	(37,727)				(37,727)
Net income (loss) attributable to noncontrolling interest	(37,742)					(15)
Balance at end of period at Jun. 30, 2024	$ 341,673	$ 2,077	$ 4,346,116	$ (102,774)	$ (3,905,205)	$ 1,459
Balance at beginning of period (in shares) at Mar. 31, 2024		193,013,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Shares issued for settlement of prepaid stock purchase contracts (in shares)		3,151,548
Shares issued for warrant exercise (in shares)		942,000
Restricted stock and restricted stock units, net (in shares)		95,000
Shares withheld for employee taxes (in shares)		(1,000)
Balances at end of period (in shares) at Jun. 30, 2024	197,201,015	197,201,000