| Cover Page Cover Page | Aug. 01, 2023 |
| Cover [Abstract] | |
| Entity Incorporation, State or Country Code | L2 |
| Entity Central Index Key | 0001757898 |
| Title of 12(b) Security | Ordinary Shares, $0.001 par value |
| Document Type | 8-K |
| Pre-commencement Issuer Tender Offer | false |
| Pre-commencement Tender Offer | false |
| Soliciting Material | false |
| Written Communications | false |
| Entity Address, Country | IE |
| Entity File Number | 001-38848 |
| Entity Tax Identification Number | 98-1455064 |
| Local Phone Number | 1 232 2000 |
| Document Period End Date | Aug. 01, 2023 |
| City Area Code | 353 |
| Entity Registrant Name | STERIS plc |
| Entity Address, Address Line One | 70 Sir John Rogerson's Quay, |
| Entity Address, City or Town | Dublin 2, |
| Trading Symbol | STE |
| Amendment Flag | false |
| Entity Address, Postal Zip Code | D02 R296 |
| Entity Emerging Growth Company | false |
| Document Information [Line Items] | |
| Title of 12(b) Security | Ordinary Shares, $0.001 par value |
| Trading Symbol | STE |
| STE Two700 Senior Notes Due2031 Member | |
| Cover [Abstract] | |
| Title of 12(b) Security | 2.700% Senior Notes due 2031 |
| Trading Symbol | STE/31 |
| Security Exchange Name | NYSE |
| Document 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 | |
| Cover [Abstract] | |
| Title of 12(b) Security | 3.750% Senior Notes due 2051 |
| Trading Symbol | STE/51 |
| Security Exchange Name | NYSE |
| Document Information [Line Items] | |
| Title of 12(b) Security | 3.750% Senior Notes due 2051 |
| Trading Symbol | STE/51 |
| Security Exchange Name | NYSE |
| Ordinary Shares | |
| Cover [Abstract] | |
| Security Exchange Name | NYSE |
| Document Information [Line Items] | |
| Security Exchange Name | NYSE |
