Document And Entity Information	6 Months Ended
	Jun. 30, 2012	Jul. 16, 2012
Document And Entity Information [Abstract]
Entity Registrant Name	CORNING INC /NY
Entity Central Index Key	0000024741
Current Fiscal Year End Date	--12-31
Document Fiscal Period Focus	Q2
Document Fiscal Year Focus	2012
Entity Filer Category	Large Accelerated Filer
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Jun. 30, 2012
Entity Common Stock, Shares Outstanding		1,489,018,162