Document and Entity Information |
Mar. 09, 2021 |
|---|---|
| Cover [Abstract] | |
| Amendment Flag | true |
| Entity Central Index Key | 0001708035 |
| Document Type | 8-K/A |
| Document Period End Date | Mar. 09, 2021 |
| Entity Registrant Name | PQ Group Holdings Inc. |
| Entity File Number | 001-38221 |
| Entity Incorporation State Country Code | DE |
| Entity Tax Identification Number | 81-3406833 |
| Entity Address, Address Line One | 300 Lindenwood Drive |
| Entity Address, City or Town | Malvern |
| Entity Address, State or Province | PA |
| Entity Address, Postal Zip Code | 19355 |
| City Area Code | (610) |
| Local Phone Number | 651-4400 |
| Written Communications | false |
| Soliciting Material | false |
| Pre Commencement Tender Offer | false |
| Pre Commencement Issuer Tender Offer | false |
| Security 12b Title | Common stock, par value $0.01 per share |
| Trading Symbol | PQG |
| Security Exchange Name | NYSE |
| Entity Emerging Growth Company | false |
| Amendment Description | On March 9, 2021, PQ Group Holdings Inc. (the “Company”) furnished a Current Report on Form 8-K (the “Initial Report”) to the Securities and Exchange Commission (the “SEC”) containing its earnings press release disclosing financial results for the quarter and year ended December 31, 2020 as Exhibit 99.1 (the “Earnings Release”). This Current Report on Form 8-K/A amends the Initial Report to correct certain financial information included in the Earnings Release as further described below. This Current Report on Form 8-K/A should be read in conjunction with the Initial Report. |