| Document and Entity Information | Dec. 18, 2023 |
| Document And Entity Information [Line Items] | |
| Entity Registrant Name | DXC Technology Co |
| Amendment Flag | true |
| Entity Central Index Key | 0001688568 |
| Document Type | 8-K/A |
| Document Period End Date | Dec. 18, 2023 |
| Entity Incorporation State Country Code | NV |
| Entity File Number | 001-38033 |
| Entity Tax Identification Number | 61-1800317 |
| Entity Address, Address Line One | 20408 Bashan Drive |
| Entity Address, Address Line Two | Suite 231 |
| Entity Address, City or Town | Ashburn |
| Entity Address, State or Province | VA |
| Entity Address, Postal Zip Code | 20147 |
| City Area Code | (703) |
| Local Phone Number | 972-7000 |
| Written Communications | false |
| Soliciting Material | false |
| Pre Commencement Tender Offer | false |
| Pre Commencement Issuer Tender Offer | false |
| Entity Emerging Growth Company | false |
| Amendment Description | This Amendment No. 1 amends the Current Report on Form 8-K filed by DXC Technology Company (the “Company” or “DXC”) on December 20, 2023 (the “Original Filing”) to disclose certain compensation arrangements for Raul J. Fernandez in connection with his appointment as Interim President and Chief Executive Officer of the Company. At the time of the Original Filing, such compensation arrangements had not been determined. Except as set forth below, the Original Filing is not being amended. |
| Common Stock [Member] | |
| Document And Entity Information [Line Items] | |
| Security 12b Title | Common Stock, $0.01 par value per share |
| Trading Symbol | DXC |
| Security Exchange Name | NYSE |
| Senior Notes [Member] | |
| Document And Entity Information [Line Items] | |
| Security 12b Title | 1.750% Senior Notes Due 2026 |
| Trading Symbol | DXC 26 |
| Security Exchange Name | NYSE |
