Cover Page Cover Page - shares	3 Months Ended
	Dec. 31, 2021	Feb. 03, 2022
Entity Information [Line Items]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Dec. 31, 2021
Document Transition Report	false
Entity File Number	001-36837
Entity Registrant Name	ENERGIZER HOLDINGS, INC.
Entity Incorporation, State or Country Code	MO
Entity Tax Identification Number	36-4802442
Entity Address, Address Line One	533 Maryville University Drive
Entity Address, City or Town	St. Louis,
Entity Address, State or Province	MO
City Area Code	(314)
Local Phone Number	985-2000
Entity Address, Postal Zip Code	63141
Title of 12(b) Security	Common Stock, par value $.01 per share
Security Exchange Name	NYSE
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Central Index Key	0001632790
Current Fiscal Year End Date	--09-30
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Trading Symbol	ENR
Document Fiscal Year Focus	2020
Document Fiscal Period Focus	Q3
Amendment Flag	false
Common stock outstanding, shares		71,250,127