| Document and Entity Information | Jun. 03, 2020 |
| Cover [Abstract] | |
| Current Fiscal Year End Date | --12-31 |
| Amendment Flag | false |
| Entity Central Index Key | 0001723089 |
| Document Type | 8-K |
| Document Period End Date | Jun. 3, 2020 |
| Entity Registrant Name | ChampionX Corporation |
| Entity Incorporation, State or Country Code | DE |
| Entity File Number | 001-38441 |
| Entity Tax Identification Number | 82-3066826 |
| Entity Address, Address Line One | 2445 Technology Forest Blvd |
| Entity Address, Address Line Two | Building 4, 12th Floor |
| Entity Address, City or Town | The Woodlands |
| Entity Address, State or Province | TX |
| Entity Address, Postal Zip Code | 77381 |
| City Area Code | 281 |
| Local Phone Number | 403-5772 |
| Entity Information, Former Legal or Registered Name | Apergy Corporation |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Title of 12(b) Security | Common Stock, $0.01 par value |
| Trading Symbol | APY |
| Security Exchange Name | NYSE |
| Entity Emerging Growth Company | false |
