XML 135 R115.htm IDEA: XBRL DOCUMENT
v3.3.1.900

Note 15 - Hedging Activities (Details) - Effect on Consolidated Financial Statements - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013
Note 15 - Hedging Activities (Details) - Effect on Consolidated Financial Statements [Line Items] |  |  |
Gain (loss) recognized in income | $ 80 | $ 1,369 | $ 435
Undesignated [Member] |  |  |
Note 15 - Hedging Activities (Details) - Effect on Consolidated Financial Statements [Line Items] |  |  |
Gain (loss) recognized in income | 85 | 1,411 | 622
Foreign Currency Transaction and Hedge Gain (Loss), Net [Member] | Foreign Exchange Contracts, Balance Sheet [Member] |  |  |
Note 15 - Hedging Activities (Details) - Effect on Consolidated Financial Statements [Line Items] |  |  |
Gain (loss) recognized in income | 8 | 29 | 100
Foreign Currency Transaction and Hedge Gain (Loss), Net [Member] | Foreign Exchange Contracts, Loans [Member] |  |  |
Note 15 - Hedging Activities (Details) - Effect on Consolidated Financial Statements [Line Items] |  |  |
Gain (loss) recognized in income | (3) | 13 | 87
Foreign Currency Transaction and Hedge Gain (Loss), Net [Member] | Translated Earnings Contracts [Member] |  |  |
Note 15 - Hedging Activities (Details) - Effect on Consolidated Financial Statements [Line Items] |  |  |
Gain (loss) recognized in income | $ 80 | $ 1,369 | $ 435

X
- References No definition available. + Details
Name: | glw_Note15HedgingActivitiesDetailsEffectonConsolidatedFinancialStatementsLineItems
Namespace Prefix: | glw_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of increase (decrease) in the fair value of derivatives recognized in the income statement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4A -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=56946850&loc=SL5618551-113959 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4C -Subparagraph (a),(c),(d),(e) -URI http://asc.fasb.org/extlink&oid=56946850&loc=SL5624171-113959 + Details
Name: | us-gaap_DerivativeGainLossOnDerivativeNet
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Details
Name: | us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis=glw_UndesignatedMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_IncomeStatementLocationAxis=glw_ForeignCurrencyTransactionAndHedgeGainLossNetMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DerivativeInstrumentRiskAxis=glw_ForeignExchangeContractsBalanceSheetMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DerivativeInstrumentRiskAxis=glw_ForeignExchangeContractsLoansMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DerivativeInstrumentRiskAxis=glw_TranslatedEarningsContractsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |