XML 125 R105.htm IDEA: XBRL DOCUMENT
v3.3.1.900

Note 13 - Employee Retirement Plans (Details) - Domestic Defined Benefit Plan Assets - USD ($) $ in Millions | Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013
--- | --- | --- | ---
Equity securities: |  |  |  |
Fair value of plan assets |  | $ 3,058 | $ 3,263 | $ 2,896
United States Pension Plan of US Entity [Member] |  |  |  |
Equity securities: |  |  |  |
Fair value of plan assets |  | 2,616 | 2,814 | 2,596
Private Equity Funds [Member] |  |  |  |
Equity securities: |  |  |  |
Fair value of plan assets |  | 163 | 192 | 207
Private Equity Funds [Member] | United States Pension Plan of US Entity [Member] |  |  |  |
Equity securities: |  |  |  |
Fair value of plan assets | [1] | 163 | 192 |
Real Estate [Member] |  |  |  |
Equity securities: |  |  |  |
Fair value of plan assets |  | 61 | 84 | $ 93
Real Estate [Member] | United States Pension Plan of US Entity [Member] |  |  |  |
Equity securities: |  |  |  |
Fair value of plan assets | [2] | 61 | 84 |
Cash Equivalents [Member] | United States Pension Plan of US Entity [Member] |  |  |  |
Equity securities: |  |  |  |
Fair value of plan assets |  | 71 | 80 |
Commodity Option [Member] | United States Pension Plan of US Entity [Member] |  |  |  |
Equity securities: |  |  |  |
Fair value of plan assets | [3] | 97 | 101 |
U.S. Companies [Member] | Equity Securities [Member] | United States Pension Plan of US Entity [Member] |  |  |  |
Equity securities: |  |  |  |
Fair value of plan assets |  | 336 | 310 |
U.S. Companies [Member] | Fixed Income Securities [Member] | United States Pension Plan of US Entity [Member] |  |  |  |
Equity securities: |  |  |  |
Fair value of plan assets |  | 1,566 | 1,720 |
International Companies [Member] | Equity Securities [Member] | United States Pension Plan of US Entity [Member] |  |  |  |
Equity securities: |  |  |  |
Fair value of plan assets |  | 322 | 327 |
Fair Value, Inputs, Level 1 [Member] | United States Pension Plan of US Entity [Member] |  |  |  |
Equity securities: |  |  |  |
Fair value of plan assets |  | 359 | 373 |
Fair Value, Inputs, Level 1 [Member] | Cash Equivalents [Member] | United States Pension Plan of US Entity [Member] |  |  |  |
Equity securities: |  |  |  |
Fair value of plan assets |  | 71 | 80 |
Fair Value, Inputs, Level 1 [Member] | U.S. Companies [Member] | Equity Securities [Member] | United States Pension Plan of US Entity [Member] |  |  |  |
Equity securities: |  |  |  |
Fair value of plan assets |  | 51 | 49 |
Fair Value, Inputs, Level 1 [Member] | U.S. Companies [Member] | Fixed Income Securities [Member] | United States Pension Plan of US Entity [Member] |  |  |  |
Equity securities: |  |  |  |
Fair value of plan assets |  | 158 | 166 |
Fair Value, Inputs, Level 1 [Member] | International Companies [Member] | Equity Securities [Member] | United States Pension Plan of US Entity [Member] |  |  |  |
Equity securities: |  |  |  |
Fair value of plan assets |  | 79 | 78 |
Fair Value, Inputs, Level 2 [Member] | United States Pension Plan of US Entity [Member] |  |  |  |
Equity securities: |  |  |  |
Fair value of plan assets |  | 2,033 | 2,165 |
Fair Value, Inputs, Level 2 [Member] | Commodity Option [Member] | United States Pension Plan of US Entity [Member] |  |  |  |
Equity securities: |  |  |  |
Fair value of plan assets | [3] | 97 | 101 |
Fair Value, Inputs, Level 2 [Member] | U.S. Companies [Member] | Equity Securities [Member] | United States Pension Plan of US Entity [Member] |  |  |  |
Equity securities: |  |  |  |
Fair value of plan assets |  | 285 | 261 |
Fair Value, Inputs, Level 2 [Member] | U.S. Companies [Member] | Fixed Income Securities [Member] | United States Pension Plan of US Entity [Member] |  |  |  |
Equity securities: |  |  |  |
Fair value of plan assets |  | 1,408 | 1,554 |
Fair Value, Inputs, Level 2 [Member] | International Companies [Member] | Equity Securities [Member] | United States Pension Plan of US Entity [Member] |  |  |  |
Equity securities: |  |  |  |
Fair value of plan assets |  | 243 | 249 |
Fair Value, Inputs, Level 3 [Member] | United States Pension Plan of US Entity [Member] |  |  |  |
Equity securities: |  |  |  |
Fair value of plan assets |  | 224 | 276 |
Fair Value, Inputs, Level 3 [Member] | Private Equity Funds [Member] | United States Pension Plan of US Entity [Member] |  |  |  |
Equity securities: |  |  |  |
Fair value of plan assets | [1] | 163 | 192 |
Fair Value, Inputs, Level 3 [Member] | Real Estate [Member] | United States Pension Plan of US Entity [Member] |  |  |  |
Equity securities: |  |  |  |
Fair value of plan assets | [2] | $ 61 | $ 84 |
[1] | This category includes venture capital, leverage buyouts and distressed debt limited partnerships invested primarily in U.S. companies. The inputs are valued by discounted cash flow analysis and comparable sale analysis.
[2] | This category includes industrial, office, apartments, hotels, infrastructure and retail investments which are limited partnerships predominately in the U.S. The inputs are valued by discounted cash flow analysis; comparable sale analysis and periodic external appraisals.
[3] | This category includes investments in energy, industrial metals, precious metals, agricultural and livestock primarily through futures, options, swaps and exchange traded funds.

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

X
- Definition Assets, usually stocks, bonds, and other investments, that have been segregated and restricted (usually in a trust) to provide benefits, at their fair value as of the measurement date. Plan assets include amounts contributed by the employer (and by employees for a contributory plan) and amounts earned from investing the contributions, less benefits paid. If a plan has liabilities other than for benefits, those non-benefit obligations may be considered as reductions of plan assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 30 -Section 35 -Paragraph 50 -URI http://asc.fasb.org/extlink&oid=49178875&loc=d3e12355-114930 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=58740216&loc=d3e1928-114920 + Details
Name: | us-gaap_DefinedBenefitPlanFairValueOfPlanAssets
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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

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

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

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

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

X
- Details
Name: | us-gaap_InvestmentTypeAxis=glw_USCompaniesMember
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=us-gaap_FixedIncomeSecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_InvestmentTypeAxis=glw_InternationalCompaniesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel1Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel2Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel3Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |