XML 102 R82.htm IDEA: XBRL DOCUMENT
v3.3.1.900

Note 8 - Acquisitions (Details) - Net Gain on Previously Owned Equity (Parentheticals) - Samsung Corning Precision Materials Co., Ltd. [Member] | Dec. 31, 2014
--- | ---
Business Acquisition [Line Items] |
Samsung Corning Precision Materials, Percent ownership | 57.50%
Pre-acquisition fair value of assets, Percent | 57.50%

X
- Definition Percentage of the pre-acquisition fair value of Samsung Corning Precision Materials. + References No definition available. + Details
Name: | glw_BusinessAcquisitionPercentageOfPreAcquisitionFairValueOfAssets
Namespace Prefix: | glw_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_BusinessAcquisitionLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 323 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=6382943&loc=d3e33918-111571 + Details
Name: | us-gaap_EquityMethodInvestmentOwnershipPercentage
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Details
Name: | us-gaap_BusinessAcquisitionAxis=glw_SamsungCorningPrecisionMaterialsCoLtdMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |