| Document and Entity Information | Sep. 01, 2021 |
| Cover [Abstract] | |
| Entity Registrant Name | DRIL-QUIP INC |
| Entity Address, Country | US |
| Amendment Flag | false |
| Entity Central Index Key | 0001042893 |
| Document Type | 8-K |
| Document Period End Date | Sep. 1, 2021 |
| Entity Incorporation State Country Code | DE |
| Entity File Number | 001-13439 |
| Entity Tax Identification Number | 74-2162088 |
| Entity Address, Address Line One | 6401 N. Eldridge Parkway |
| Entity Address, City or Town | Houston |
| Entity Address, State or Province | TX |
| Entity Address, Postal Zip Code | 77041 |
| City Area Code | (713) |
| Local Phone Number | 939-7711 |
| Written Communications | false |
| Soliciting Material | false |
| Pre Commencement Tender Offer | false |
| Pre Commencement Issuer Tender Offer | false |
| Security 12b Title | Common Stock, $.01 par value per share |
| Trading Symbol | DRQ |
| Security Exchange Name | NYSE |
| Entity Emerging Growth Company | false |
