Document and Entity Information	3 Months Ended
	Mar. 31, 2021 shares
Cover
Document Type	10-Q
Document Quarterly Report	true
Document Transition Report	false
Document Period End Date	Mar. 31, 2021
Entity File Number	1-9576
Entity Registrant Name	O-I GLASS, INC.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	22-2781933
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
City Area Code	567
Local Phone Number	336-5000
Title of 12(b) Security	Common Stock, $.01 par value
Security Exchange Name	NYSE
Trading Symbol	OI
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding	157,912,101
Entity Central Index Key	0000812074
Amendment Flag	false
Document Fiscal Year Focus	2021
Current Fiscal Year End Date	--12-31
Document Fiscal Period Focus	Q1