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Note 17 - Reportable Segments (Details Textual) | 6 Months Ended
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Jun. 30, 2016
Minimum [Member] |
Number of Material Formulations | 150

X
- Definition The number of material formulations for glass, glass ceramics and fluoride crystals provided by the Specialty Materials Segment. + References No definition available. + Details
Name: | glw_NumberOfMaterialFormulations
Namespace Prefix: | glw_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_RangeAxis=us-gaap_MinimumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |