Cover - USD ($)	12 Months Ended
	Dec. 31, 2024	Feb. 17, 2025	Jun. 30, 2024
Document Information [Line Items]
Document Type	10-K/A
Document Annual Report	true
Document Period End Date	Dec. 31, 2024
Current Fiscal Year End Date	--12-31
Document Transition Report	false
Entity File Number	001-32641
Entity Registrant Name	BROOKDALE SENIOR LIVING INC.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	20-3068069
Entity Address, Address Line One	105 Westwood Place,
Entity Address, Address Line Two	Suite 400
Entity Address, City or Town	Brentwood,
Entity Address, State or Province	TN
Entity Address, Postal Zip Code	37027
City Area Code	615
Local Phone Number	221-2250
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
ICFR Auditor Attestation Flag	true
Document Financial Statement Error Correction [Flag]	false
Entity Shell Company	false
Entity Public Float			$ 1.3
Entity Common Stock, Shares Outstanding		200,189,063
Entity Central Index Key	0001332349
Document Fiscal Year Focus	2024
Document Fiscal Period Focus	FY
Amendment Flag	true
Amendment Description	Explanatory Note This Amendment No. 1 on Form 10-K/A (this “Amendment”) amends the Annual Report on Form 10-K for Brookdale Senior Living Inc. (“Brookdale,” the “Company,” “we,” or “our”) for the fiscal year ended December 31, 2024, which was filed with the Securities and Exchange Commission (the “SEC”) on February 19, 2025 (the “Original Filing”). We are filing this Amendment to include the information required by Part III and not included in the Original Filing, as we will not file our definitive proxy statement within 120 days of the end of our fiscal year ended December 31, 2024. The reference on the cover page of the Original Filing to our incorporation by reference of certain sections of our definitive proxy statement into Part III of the Original Filing is hereby deleted. Except as set forth in Part III below and the updates to the List of Exhibits, no other changes are made to the Original Filing. The Original Filing continues to speak as of the date of the Original Filing. Unless expressly stated, this Amendment does not reflect events occurring after the filing of the Original Filing, nor does it modify or update in any way the disclosures contained in the Original Filing. Accordingly, this Amendment should be read in conjunction with the Original Filing and our other filings with the SEC.
Common Stock [Member]
Document Information [Line Items]
Title of 12(b) Security	Common Stock, $0.01 Par Value Per Share
Trading Symbol	BKD
Security Exchange Name	NYSE
7.00% Tangible Equity Units
Document Information [Line Items]
Title of 12(b) Security	7.00% Tangible Equity Units
Trading Symbol	BKDT
Security Exchange Name	NYSE