CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Total revenue	$ 813,165	$ 784,167	$ 2,439,973	$ 2,344,539
Cost of Revenue [Abstract]
Facility operating expense (excluding facility depreciation and amortization of $90,248, $83,479, $264,637, and $245,089, respectively)	566,985	548,282	1,686,289	1,628,339
General and administrative expense (including non-cash stock-based compensation expense of $2,633, $3,403, $9,701, and $10,651, respectively)	50,866	44,929	153,713	137,325
Facility operating lease expense	51,993	51,937	157,520	154,397
Depreciation and amortization	94,792	90,064	278,621	264,219
Asset impairment	62,696	934	65,060	2,642
Loss (gain) on sale of communities, net	(139)	0	(182)	0
Loss (gain) on facility operating lease termination, net	4,480	0	4,480	0
Income (loss) from operations	(53,835)	10,259	(9,352)	48,667
Interest income	3,020	4,663	9,587	14,155
Interest expense:
Debt	(58,089)	(54,171)	(170,396)	(161,405)
Financing lease obligations	(1,764)	(5,062)	(9,114)	(15,233)
Amortization of deferred financing costs	(3,747)	(2,337)	(11,089)	(6,928)
Change in fair value of derivatives	26	(4,746)	(1,087)	(2,004)
Gain (loss) on debt modification and extinguishment, net	(326)	(2,267)	(35,661)	(2,267)
Non-operating gain (loss) on sale of assets, net	0	20	0	923
Other non-operating income (loss)	144	3,584	3,562	7,121
Income (loss) before income taxes	(114,571)	(50,057)	(223,550)	(116,971)
Benefit (provision) for income taxes	(167)	(677)	780	(1,086)
Net income (loss)	(114,738)	(50,734)	(222,770)	(118,057)
Net (income) loss attributable to noncontrolling interest	12	14	41	44
Net income (loss) attributable to Brookdale Senior Living Inc. common stockholders	$ (114,726)	$ (50,720)	$ (222,729)	$ (118,013)
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)	$ (0.48)	$ (0.22)	$ (0.95)	$ (0.52)
Diluted net income (loss) per share attributable to Brookdale Senior Living Inc. common stockholders (in dollars per share)	$ (0.48)	$ (0.22)	$ (0.95)	$ (0.52)
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)	237,487	228,124	234,326	226,939
Weighted average shares used in computing diluted net income (loss) per share (in shares)	237,487	228,124	234,326	226,939
Resident fees
Total revenue	$ 775,140	$ 743,729	$ 2,328,208	$ 2,227,679
Management fees
Total revenue	2,698	2,676	7,941	7,910
Reimbursed costs incurred on behalf of managed communities
Total revenue	35,327	37,762	103,824	108,950
Cost of Revenue [Abstract]
Costs incurred on behalf of managed communities	35,327	37,762	103,824	108,950
Facility operating expense
Cost of Revenue [Abstract]
Facility operating expense (excluding facility depreciation and amortization of $90,248, $83,479, $264,637, and $245,089, respectively)	$ 566,985	$ 548,282	$ 1,686,289	$ 1,628,339