CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Total revenue	$ 812,944	$ 777,541	$ 1,626,808	$ 1,560,372
Cost of Revenue [Abstract]
Facility operating expense (excluding facility depreciation and amortization of $88,180, $81,706, $174,389, and $161,610, respectively)	562,317	537,507	1,119,304	1,080,057
General and administrative expense (including non-cash stock-based compensation expense of $3,089, $3,975, $7,068, and $7,248, respectively)	54,973	46,664	102,847	92,396
Facility operating lease expense	52,653	50,964	105,527	102,460
Depreciation and amortization	92,853	88,028	183,829	174,155
Asset impairment	577	0	2,364	1,708
Loss (gain) on sale of communities, net	(43)	0	(43)	0
Income (loss) from operations	14,907	19,162	44,483	38,408
Interest income	2,919	4,714	6,567	9,492
Interest expense:
Debt	(57,648)	(53,778)	(112,307)	(107,234)
Financing lease obligations	(1,750)	(5,110)	(7,350)	(10,171)
Amortization of deferred financing costs	(3,712)	(2,334)	(7,342)	(4,591)
Change in fair value of derivatives	29	(345)	(1,113)	2,742
Gain (loss) on debt modification and extinguishment, net	(115)	0	(35,335)	0
Non-operating gain (loss) on sale of assets, net	0	199	0	903
Other non-operating income (loss)	2,060	199	3,418	3,537
Income (loss) before income taxes	(43,310)	(37,293)	(108,979)	(66,914)
Benefit (provision) for income taxes	271	(449)	947	(409)
Net income (loss)	(43,039)	(37,742)	(108,032)	(67,323)
Net (income) loss attributable to noncontrolling interest	15	15	29	30
Net income (loss) attributable to Brookdale Senior Living Inc. common stockholders	$ (43,024)	$ (37,727)	$ (108,003)	$ (67,293)
Basic and diluted net income (loss) per share attributable to Brookdale Senior Living Inc. common stockholders
Basic net income (loss) per share attributable to Brookdale Senior Living Inc. common stockholders (in dollars per share)	$ (0.18)	$ (0.17)	$ (0.46)	$ (0.30)
Diluted net income (loss) per share attributable to Brookdale Senior Living Inc. common stockholders (in dollars per share)	$ (0.18)	$ (0.17)	$ (0.46)	$ (0.30)
Weighted average shares used in computing basic and diluted net income (loss) per share
Weighted average shares used in computing basic net income (loss) per share (in shares)	234,737	226,789	232,719	226,340
Weighted average shares used in computing diluted net income (loss) per share (in shares)	234,737	226,789	232,719	226,340
Resident fees
Total revenue	$ 775,614	$ 739,709	$ 1,553,068	$ 1,483,950
Management fees
Total revenue	2,623	2,616	5,243	5,234
Reimbursed costs incurred on behalf of managed communities
Total revenue	34,707	35,216	68,497	71,188
Cost of Revenue [Abstract]
Costs incurred on behalf of managed communities	34,707	35,216	68,497	71,188
Facility operating expense
Cost of Revenue [Abstract]
Facility operating expense (excluding facility depreciation and amortization of $88,180, $81,706, $174,389, and $161,610, respectively)	$ 562,317	$ 537,507	$ 1,119,304	$ 1,080,057