| Document and Entity Information | Oct. 29, 2024 |
| Cover [Abstract] | |
| Entity Registrant Name | Ferguson Enterprises Inc. /DE/ |
| Amendment Flag | false |
| Entity Central Index Key | 0002011641 |
| Document Type | 8-K |
| Document Period End Date | Oct. 29, 2024 |
| Entity Incorporation State Country Code | DE |
| Entity File Number | 001-42200 |
| Entity Tax Identification Number | 38-4304133 |
| Entity Address, Address Line One | 751 Lakefront Commons |
| Entity Address, City or Town | Newport News |
| Entity Address, State or Province | VA |
| Entity Address, Postal Zip Code | 23606 |
| City Area Code | 757 |
| Local Phone Number | 874-7795 |
| Written Communications | false |
| Soliciting Material | false |
| Pre Commencement Tender Offer | false |
| Pre Commencement Issuer Tender Offer | false |
| Security 12b Title | Common stock, par value $0.0001 per share |
| Trading Symbol | FERG |
| Security Exchange Name | NYSE |
| Entity Emerging Growth Company | false |
