XML 115 R95.htm IDEA: XBRL DOCUMENT
v3.3.1.900

Note 13 - Employee Retirement Plans (Details) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2015 USD ($) | Dec. 31, 2014 USD ($) | Dec. 31, 2013 USD ($)
Note 13 - Employee Retirement Plans (Details) [Line Items] |  |  |
Cap on Contribution Toward Future Retiree Medical Coverage | 120.00% |  |
Percentage of Cost to be Paid by Employees for Retiree Medical Upon Retirement | 100.00% |  |
Defined Benefit Plan, Accumulated Benefit Obligation (in Dollars) | $ 3,500 | $ 3,600 |
Grading Sources | 4 |  |
Defined Benefit Plan, Number of Years RP 2000 Mortality Table Is Used | 7 |  |
Credit Risk of Plan Assets Long Duration Corporate Bonds | 60.00% |  |
Currency Fluctuations Assets Invested in Non-US Investments | 12.00% |  |
Liquidity Risk Long Term Investments in Private Equity and Real Estate | 9.00% |  |
Defined Contribution Plan, Cost Recognized (in Dollars) | $ 53 | 62 | $ 63
United States Pension Plan of US Entity [Member] |  |  |
Note 13 - Employee Retirement Plans (Details) [Line Items] |  |  |
Defined Benefit Plan Voluntary Contributions by Employer (in Dollars) | 65 | 85 |
Foreign Pension Plan [Member] |  |  |
Note 13 - Employee Retirement Plans (Details) [Line Items] |  |  |
Defined Benefit Plan Voluntary Contributions by Employer (in Dollars) | 35 | $ 45 |
Pension Plan [Member] |  |  |
Note 13 - Employee Retirement Plans (Details) [Line Items] |  |  |
Defined Benefit Plan, Future Amortization of Prior Service Cost (Credit) (in Dollars) | 6 |  |
Other Postretirement Benefit Plan [Member] |  |  |
Note 13 - Employee Retirement Plans (Details) [Line Items] |  |  |
Defined Benefit Plan, Future Amortization of Prior Service Cost (Credit) (in Dollars) | (4) |  |
Defined Benefit Plan, Future Amortization of Gain (Loss) (in Dollars) | $ 1 |  |
Equity Securities [Member] |  |  |
Note 13 - Employee Retirement Plans (Details) [Line Items] |  |  |
Defined Benefit Plan, Target Plan Asset Allocations Range Minimum | 20.00% |  |
Defined Benefit Plan, Target Plan Asset Allocations Range Maximum | 25.00% |  |
Bond Investments [Member] |  |  |
Note 13 - Employee Retirement Plans (Details) [Line Items] |  |  |
Defined Benefit Plan, Target Plan Asset Allocations | 60.00% |  |
Private Equity and Real Estate [Member] |  |  |
Note 13 - Employee Retirement Plans (Details) [Line Items] |  |  |
Defined Benefit Plan, Target Plan Asset Allocations Range Minimum | 5.00% |  |
Defined Benefit Plan, Target Plan Asset Allocations Range Maximum | 15.00% |  |
Commodities [Member] |  |  |
Note 13 - Employee Retirement Plans (Details) [Line Items] |  |  |
Defined Benefit Plan, Target Plan Asset Allocations Range Minimum | 0.00% |  |
Defined Benefit Plan, Target Plan Asset Allocations Range Maximum | 5.00% |  |
Maximum [Member] |  |  |
Note 13 - Employee Retirement Plans (Details) [Line Items] |  |  |
Number of Bonds | 375 |  |
Percent to Yield | 40.00% |  |
Maximum [Member] | United States Pension Plan of US Entity [Member] |  |  |
Note 13 - Employee Retirement Plans (Details) [Line Items] |  |  |
Defined Benefit Plans, Estimated Future Employer Contributions in Next Fiscal Year (in Dollars) | $ 62 |  |
Maximum [Member] | Foreign Pension Plan [Member] |  |  |
Note 13 - Employee Retirement Plans (Details) [Line Items] |  |  |
Defined Benefit Plans, Estimated Future Employer Contributions in Next Fiscal Year (in Dollars) | $ 36 |  |
Minimum [Member] |  |  |
Note 13 - Employee Retirement Plans (Details) [Line Items] |  |  |
Number of Bonds | 350 |  |
Percent to Yield | 10.00% |  |

X
- Definition Represents the cap on the Company's contribution toward future retiree medical coverage. + References No definition available. + Details
Name: | glw_CapOnContributionTowardFutureRetireeMedicalCoverage
Namespace Prefix: | glw_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Represents the percentage of plan assets which are invested in long duration bonds. + References No definition available. + Details
Name: | glw_CreditRiskOfPlanAssetsLongDurationCorporateBonds
Namespace Prefix: | glw_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Percent of assets which are invested in non-U.S. dollar denominated investments. + References No definition available. + Details
Name: | glw_CurrencyFluctuationsAssetsInvestedInNonUSInvestments
Namespace Prefix: | glw_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of years the Company has utilized the RP 2000 mortality table to perform valuations of its U.S. pension and OPEB liabilities. + References No definition available. + Details
Name: | glw_DefinedBenefitPlanNumberOfYearsRP2000MortalityTableIsUsed
Namespace Prefix: | glw_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition The amount of voluntary contributions made by the entity to fund its defined benefit plans. + References No definition available. + Details
Name: | glw_DefinedBenefitPlanVoluntaryContributionsByEmployer
Namespace Prefix: | glw_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Represents the four grading sources, namely Moody's, S&P, Fitch and the Dominion Bond Rating Service. + References No definition available. + Details
Name: | glw_GradingSources
Namespace Prefix: | glw_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Percent of securities which are level 3 securities in private equity and private real estate. + References No definition available. + Details
Name: | glw_LiquidityRiskLongTermInvestmentsInPrivateEquityAndRealEstate
Namespace Prefix: | glw_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | glw_Note13EmployeeRetirementPlansDetailsLineItems
Namespace Prefix: | glw_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the number of bonds used to develop a hypothetical yield curve. + References No definition available. + Details
Name: | glw_NumberOfBonds
Namespace Prefix: | glw_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the yield of a bond in percent. + References No definition available. + Details
Name: | glw_PercentToYield
Namespace Prefix: | glw_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the percentage of the cost to be paid by employees for retiree medical benefits upon retirement. This is applicable to employees hired or rehired on or after January 1, 2007. + References No definition available. + Details
Name: | glw_PercentageOfCostToBePaidByEmployeesForRetireeMedicalUponRetirement
Namespace Prefix: | glw_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition For defined benefit pension plans, the actuarial present value of benefits (whether vested or nonvested) attributed by the pension benefit formula to employee service rendered before a specified date and based on employee service and compensation (if applicable) before that date. The accumulated benefit obligation differs from the projected benefit obligation in that it includes no assumption about future compensation levels. For plans with flat-benefit or nonpay-related pension benefit formulas, the accumulated benefit obligation and the projected benefit obligation are the same. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Accumulated Benefit Obligation -URI http://asc.fasb.org/extlink&oid=6503844 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=58740216&loc=d3e1928-114920 + Details
Name: | us-gaap_DefinedBenefitPlanAccumulatedBenefitObligation
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount included in accumulated other comprehensive income (AOCI) related to gain (loss) expected to be recognized as components of net periodic benefit cost for the fiscal year that follows the most recent annual statement of financial position. + References No definition available. + Details
Name: | us-gaap_DefinedBenefitPlanFutureAmortizationOfGainLoss
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount included in accumulated other comprehensive income (AOCI) related to prior service cost (credit) expected to be recognized as components of net periodic benefit cost for the fiscal year that follows the most recent annual statement of financial position. + References No definition available. + Details
Name: | us-gaap_DefinedBenefitPlanFutureAmortizationOfPriorServiceCostCredit
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Target allocation of investments of this type to total plan assets presented on a weighted average basis. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 5 -Subparagraph (c)(i) -URI http://asc.fasb.org/extlink&oid=58740216&loc=d3e2446-114920 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (d)(i) -URI http://asc.fasb.org/extlink&oid=58740216&loc=d3e1928-114920 + Details
Name: | us-gaap_DefinedBenefitPlanTargetPlanAssetAllocations
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Target allocation maximum percentage of investments of this type to total plan assets presented on a weighted average basis. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 5 -Subparagraph (c)(i) -URI http://asc.fasb.org/extlink&oid=58740216&loc=d3e2446-114920 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (d)(i) -URI http://asc.fasb.org/extlink&oid=58740216&loc=d3e1928-114920 + Details
Name: | us-gaap_DefinedBenefitPlanTargetPlanAssetAllocationsRangeMaximum
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Target allocation minimum percentage of investments of this type to total plan assets presented on a weighted average basis. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (d)(i) -URI http://asc.fasb.org/extlink&oid=58740216&loc=d3e1928-114920 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 5 -Subparagraph (c)(i) -URI http://asc.fasb.org/extlink&oid=58740216&loc=d3e2446-114920 + Details
Name: | us-gaap_DefinedBenefitPlanTargetPlanAssetAllocationsRangeMinimum
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of employer's best estimate of contributions expected to be paid to the plan during the next fiscal year beginning after the date of the latest statement of financial position. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=58740216&loc=d3e1928-114920 + Details
Name: | us-gaap_DefinedBenefitPlansEstimatedFutureEmployerContributionsInNextFiscalYear
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The amount of the cost recognized during the period for defined contribution plans. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 70 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=49170846&loc=d3e28014-114942 + Details
Name: | us-gaap_DefinedContributionPlanCostRecognized
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis=us-gaap_UnitedStatesPensionPlansOfUSEntityDefinedBenefitMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis=us-gaap_ForeignPensionPlansDefinedBenefitMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis=us-gaap_PensionPlansDefinedBenefitMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis=us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis=us-gaap_EquitySecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis=glw_BondInvestmentsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis=glw_PrivateEquityAndRealEstateMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis=glw_CommoditiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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

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