Boolean flag that is true when the XBRL content amends previously-filed or accepted submission.

No definition available.

Name:	dei_AmendmentFlag
Namespace Prefix:	dei_
Data Type:	xbrli:booleanItemType
Balance Type:	na
Period Type:	duration

- Definition

PCAOB issued Audit Firm Identifier

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Form 10-K
-Number 249
-Section 310

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Form 20-F
-Number 249
-Section 220
-Subsection f

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Form 40-F
-Number 249
-Section 240
-Subsection f

Document and Entity Information - USD ($)	12 Months Ended
Document and Entity Information - USD ($)	Dec. 31, 2025	Mar. 02, 2026	Jun. 30, 2025
Document Information [Line Items]
Document Type	10-K
Amendment Flag	false
Document Period End Date	Dec. 31, 2025
Document Fiscal Year Focus	2025
Document Fiscal Period Focus	FY
Document Annual Report	true
Document Transition Report	false
Entity Registrant Name	Millrose Properties, Inc.
Entity Central Index Key	0002017206
Current Fiscal Year End Date	--12-31
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity File Number	001-42476
Entity Incorporation, State or Country Code	MD
Entity Tax Identification Number	99-2056892
Entity Address, Address Line One	600 Brickell Avenue
Entity Address, Address Line Two	Suite 1400
Entity Address, City or Town	Miami
Entity Address, State or Province	FL
Document Financial Statement Error Correction [Flag]	false
Entity Address, Postal Zip Code	33131
City Area Code	212
Local Phone Number	782-3841
ICFR Auditor Attestation Flag	false
Title of 12(b) Security	Class A common stock, par value $0.01 per share
Trading Symbol	MRP
Security Exchange Name	NYSE
Entity Public Float			$ 3,786,226,188
Documents Incorporated by Reference [Text Block]	Documents Incorporated By Reference Portions of the registrant’s definitive proxy statement for its 2026 Annual Meeting of Stockholders, which will be filed with the Securities and Exchange Commission within 120 days of December 31, 2025, are incorporated by reference into Part III of this report for the year ended December 31, 2025.
Auditor Name	Deloitte & Touche LLP
Auditor Firm ID	34
Auditor Location	New York, NY
Auditor Opinion [Text Block]	Opinion on the Financial Statements We have audited the accompanying consolidated balance sheets of Millrose Properties, Inc. and subsidiaries (the “Company”) as of December 31, 2025 and 2024, and the related consolidated statements of operations, stockholders’ equity, and cash flows, for each of the three years in the period ended December 31, 2025, and the related notes (collectively referred to as the “financial statements”). In our opinion, the financial statements present fairly, in all material respects, the financial position of the Company as of December 31, 2025 and 2024, and the results of its operations and its cash flows for each of the three years in the period ended December 31, 2025 in conformity with accounting principles generally accepted in the United States of America.
Class A Common Stock
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		154,183,686
Class B Common Stock
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		11,819,811