| Document and Entity Information | Sep. 01, 2020 |
| Cover [Abstract] | |
| Entity Address, Country | US |
| Amendment Flag | false |
| Entity Central Index Key | 0001792580 |
| Document Type | 8-K |
| Document Period End Date | Sep. 1, 2020 |
| Entity Registrant Name | Ovintiv Inc. |
| Entity Incorporation State Country Code | DE |
| Entity File Number | 001-39191 |
| Entity Tax Identification Number | 84-4427672 |
| Entity Address, Address Line One | Suite 1700 |
| Entity Address, Address Line Two | 370 - 17th Street |
| Entity Address, City or Town | Denver |
| Entity Address, State or Province | CO |
| Entity Address, Postal Zip Code | 80202 |
| City Area Code | (303) |
| Local Phone Number | 623-2300 |
| 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 | OVV |
| Security Exchange Name | NYSE |
| Entity Emerging Growth Company | false |
