Cover - USD ($)	12 Months Ended
	Mar. 31, 2024	May 24, 2024	Sep. 30, 2023
Entity Information [Line Items]
Document Annual Report	true
Document Transition Report	false
Entity Central Index Key	0001757898
Document Period End Date	Mar. 31, 2024
Amendment Flag	false
Document Fiscal Year Focus	2024
Document Fiscal Period Focus	FY
Entity Interactive Data Current	Yes
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Address, Address Line One	70 Sir John Rogerson's Quay,
Entity Address, City or Town	Dublin 2,
Entity Address, Country	IE
Entity Address, Postal Zip Code	D02 R296
ICFR Auditor Attestation Flag	true
Local Phone Number	232 2000
City Area Code	1
Country Region	353
Entity Shell Company	false
Entity Registrant Name	STERIS plc
Document Type	10-K
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity File Number	001-38848
Entity Incorporation, State or Country Code	L2
Entity Filer Category	Large Accelerated Filer
Entity Tax Identification Number	98-1455064
Entity Public Float			$ 21,614,000,000
Entity Common Stock, Shares Outstanding		98,900,010
Current Fiscal Year End Date	--03-31
Document Financial Statement Error Correction [Flag]	false
Ordinary Shares
Entity Information [Line Items]
Title of 12(b) Security	Ordinary Shares, $0.001 par value
Trading Symbol	STE
Security Exchange Name	NYSE
STE Two700 Senior Notes Due2031 Member
Entity Information [Line Items]
Title of 12(b) Security	2.700% Senior Notes due 2031
Trading Symbol	STE/31
Security Exchange Name	NYSE
Two700 Senior Notes Due2051 Member
Entity Information [Line Items]
Title of 12(b) Security	3.750% Senior Notes due 2051
Trading Symbol	STE/51
Security Exchange Name	NYSE