Cover Page - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2025	Nov. 18, 2025	Mar. 31, 2025
Cover [Abstract]
Document Type	10-K
Document Annual Report	true
Document Period End Date	Sep. 30, 2025
Current Fiscal Year End Date	--09-30
Document Transition Report	false
Entity File Number	001-41186
Entity Registrant Name	EMBECTA CORP.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	87-1583942
Entity Address, Address Line One	300 Kimball Drive, Suite 300
Entity Address, City or Town	Parsippany
Entity Address, State or Province	NJ
Entity Address, Postal Zip Code	07054
City Area Code	862
Local Phone Number	401-0000
Title of 12(b) Security	Common Stock, par value $0.01 per share
Trading Symbol	EMBC
Security Exchange Name	NASDAQ
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 Emerging Growth Company	false
Entity Small Business	false
ICFR Auditor Attestation Flag	true
Document Financial Statement Error Correction Flag	false
Entity Shell Company	false
Entity Public Float			$ 732
Entity Common Stock, Shares Outstanding		58,512,841
Documents Incorporated by Reference	The information required by Items 10, 11, 12, 13 and 14 of Part III of this Annual Report on Form 10-K is incorporated by reference to the Registrant’s definitive proxy statement for its 2026 Annual Meeting of Stockholders (the “2026 Proxy Statement”), which will be filed pursuant to Regulation 14A with the United States Securities and Exchange Commission (“SEC”) within 120 days after the end of the fiscal year to which this report relates.
Central Index Key	0001872789
Period Focus	FY
Fiscal Year Focus	2025
Amendment Flag	false