| Cover | Feb. 09, 2021 |
| Cover [Abstract] | |
| Document Type | 8-K |
| Amendment Flag | false |
| Document Period End Date | Feb. 9, 2021 |
| Entity File Number | 1-9576 |
| Entity Registrant Name | O-I GLASS, INC. |
| Entity Central Index Key | 0000812074 |
| Entity Tax Identification Number | 22-2781933 |
| Entity Incorporation, State or Country Code | DE |
| Entity Address, Address Line One | One Michael Owens Way |
| Entity Address, City or Town | Perrysburg |
| Entity Address, State or Province | OH |
| Entity Address, Postal Zip Code | 43551-2999 |
| City Area Code | 567 |
| Local Phone Number | 336-5000 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Title of 12(b) Security | Common stock, $.01 per value |
| Trading Symbol | OI |
| Security Exchange Name | NYSE |
| Entity Emerging Growth Company | false |
