XML 11 R1.htm IDEA: XBRL DOCUMENT v3.25.3
Cover Page - shares
 9 Months Ended
Sep. 30, 2025
Oct. 23, 2025
Document Information [Line Items]    
Document Type 10-Q  
Document Quarterly Report true  
Document Period End Date Sep. 30, 2025  
Document Transition Report false  
Entity File Number 1-3247  
Registrant Name CORNING INC /NY  
Entity Incorporation, State or Country Code NY  
Entity Tax Identification Number 16-0393470  
Entity Address, Address Line One One Riverfront Plaza  
Entity Address, City or Town Corning  
Entity Address, State or Province NY  
Entity Address, Postal Zip Code 14831  
City Area Code 607  
Local Phone Number 974-9000  
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   857,360,396
Entity Central Index Key 0000024741  
Current Fiscal Year End Date --12-31  
Amendment Flag false  
Document Fiscal Year Focus 2025  
Document Fiscal Period Focus Q3  
Common stock    
Document Information [Line Items]    
Title of 12(b) Security Common Stock, $0.50 par value per share  
Trading Symbol GLW  
Security Exchange Name NYSE  
3.875% Notes due 2026    
Document Information [Line Items]    
Title of 12(b) Security 3.875% Notes due 2026  
Trading Symbol GLW26  
Security Exchange Name NYSE  
4.125% Notes due 2031    
Document Information [Line Items]    
Title of 12(b) Security 4.125% Notes due 2031  
Trading Symbol GLW31  
Security Exchange Name NYSE