XML 41 R89.htm IDEA: XBRL DOCUMENT v2.4.1.9
Fair Value of Pension Plan Assets (Detail) (USD $)
In Millions, unless otherwise specified
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Pension Plans      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of pension plan assets $ 9,504us-gaap_DefinedBenefitPlanFairValueOfPlanAssets
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Pension Plans | U.S. Equity Securities      
Defined Benefit Plan Disclosure [Line Items]      
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Pension Plans | Non-U.S. Equity Securities      
Defined Benefit Plan Disclosure [Line Items]      
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Pension Plans | Pooled Funds - Equity Securities      
Defined Benefit Plan Disclosure [Line Items]      
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Pension Plans | Equity Securities      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of pension plan assets 3,014us-gaap_DefinedBenefitPlanFairValueOfPlanAssets
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Pension Plans | Government Bonds      
Defined Benefit Plan Disclosure [Line Items]      
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Pension Plans | Pooled Funds - Fixed Income Securities      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of pension plan assets 1,151us-gaap_DefinedBenefitPlanFairValueOfPlanAssets
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Pension Plans | Corporate Bonds And Other Fixed Income Securities      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of pension plan assets 1,174us-gaap_DefinedBenefitPlanFairValueOfPlanAssets
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Pension Plans | Fixed Income Securities      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of pension plan assets 4,608us-gaap_DefinedBenefitPlanFairValueOfPlanAssets
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Pension Plans | Real Estate      
Defined Benefit Plan Disclosure [Line Items]      
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Pension Plans | Hedge Funds      
Defined Benefit Plan Disclosure [Line Items]      
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Pension Plans | Private Equity      
Defined Benefit Plan Disclosure [Line Items]      
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Pension Plans | Cash      
Defined Benefit Plan Disclosure [Line Items]      
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Pension Plans | Other      
Defined Benefit Plan Disclosure [Line Items]      
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Quoted Prices In Active Markets For Identical Assets (Level 1) | Pension Plans      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of pension plan assets 2,699us-gaap_DefinedBenefitPlanFairValueOfPlanAssets
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Quoted Prices In Active Markets For Identical Assets (Level 1) | Pension Plans | U.S. Equity Securities      
Defined Benefit Plan Disclosure [Line Items]      
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Quoted Prices In Active Markets For Identical Assets (Level 1) | Pension Plans | Non-U.S. Equity Securities      
Defined Benefit Plan Disclosure [Line Items]      
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Quoted Prices In Active Markets For Identical Assets (Level 1) | Pension Plans | Pooled Funds - Equity Securities      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of pension plan assets 538us-gaap_DefinedBenefitPlanFairValueOfPlanAssets
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Quoted Prices In Active Markets For Identical Assets (Level 1) | Pension Plans | Equity Securities      
Defined Benefit Plan Disclosure [Line Items]      
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Quoted Prices In Active Markets For Identical Assets (Level 1) | Pension Plans | Government Bonds      
Defined Benefit Plan Disclosure [Line Items]      
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Quoted Prices In Active Markets For Identical Assets (Level 1) | Pension Plans | Pooled Funds - Fixed Income Securities      
Defined Benefit Plan Disclosure [Line Items]      
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Quoted Prices In Active Markets For Identical Assets (Level 1) | Pension Plans | Corporate Bonds And Other Fixed Income Securities      
Defined Benefit Plan Disclosure [Line Items]      
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Quoted Prices In Active Markets For Identical Assets (Level 1) | Pension Plans | Fixed Income Securities      
Defined Benefit Plan Disclosure [Line Items]      
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Quoted Prices In Active Markets For Identical Assets (Level 1) | Pension Plans | Real Estate      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of pension plan assets 110us-gaap_DefinedBenefitPlanFairValueOfPlanAssets
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Quoted Prices In Active Markets For Identical Assets (Level 1) | Pension Plans | Cash      
Defined Benefit Plan Disclosure [Line Items]      
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Quoted Prices In Active Markets For Identical Assets (Level 1) | Pension Plans | Other      
Defined Benefit Plan Disclosure [Line Items]      
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Significant Other Observable Inputs (Level 2) | Pension Plans      
Defined Benefit Plan Disclosure [Line Items]      
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Significant Other Observable Inputs (Level 2) | Pension Plans | Pooled Funds - Equity Securities      
Defined Benefit Plan Disclosure [Line Items]      
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Significant Other Observable Inputs (Level 2) | Pension Plans | Equity Securities      
Defined Benefit Plan Disclosure [Line Items]      
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Significant Other Observable Inputs (Level 2) | Pension Plans | Government Bonds      
Defined Benefit Plan Disclosure [Line Items]      
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Significant Other Observable Inputs (Level 2) | Pension Plans | Pooled Funds - Fixed Income Securities      
Defined Benefit Plan Disclosure [Line Items]      
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Defined Benefit Plan Disclosure [Line Items]      
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Significant Other Observable Inputs (Level 2) | Pension Plans | Fixed Income Securities      
Defined Benefit Plan Disclosure [Line Items]      
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Significant Other Observable Inputs (Level 2) | Pension Plans | Real Estate      
Defined Benefit Plan Disclosure [Line Items]      
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Significant Other Observable Inputs (Level 2) | Pension Plans | Cash      
Defined Benefit Plan Disclosure [Line Items]      
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Significant Other Observable Inputs (Level 2) | Pension Plans | Other      
Defined Benefit Plan Disclosure [Line Items]      
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Significant Unobservable Inputs (Level 3)      
Defined Benefit Plan Disclosure [Line Items]      
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Significant Unobservable Inputs (Level 3) | Pooled Funds - Fixed Income Securities      
Defined Benefit Plan Disclosure [Line Items]      
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Significant Unobservable Inputs (Level 3) | Corporate Bonds And Other Fixed Income Securities      
Defined Benefit Plan Disclosure [Line Items]      
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Significant Unobservable Inputs (Level 3) | Real Estate      
Defined Benefit Plan Disclosure [Line Items]      
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Significant Unobservable Inputs (Level 3) | Hedge Funds      
Defined Benefit Plan Disclosure [Line Items]      
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Significant Unobservable Inputs (Level 3) | Private Equity      
Defined Benefit Plan Disclosure [Line Items]      
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Significant Unobservable Inputs (Level 3) | Pension Plans      
Defined Benefit Plan Disclosure [Line Items]      
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Significant Unobservable Inputs (Level 3) | Pension Plans | Pooled Funds - Fixed Income Securities      
Defined Benefit Plan Disclosure [Line Items]      
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Significant Unobservable Inputs (Level 3) | Pension Plans | Corporate Bonds And Other Fixed Income Securities      
Defined Benefit Plan Disclosure [Line Items]      
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Significant Unobservable Inputs (Level 3) | Pension Plans | Fixed Income Securities      
Defined Benefit Plan Disclosure [Line Items]      
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Significant Unobservable Inputs (Level 3) | Pension Plans | Real Estate      
Defined Benefit Plan Disclosure [Line Items]      
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Significant Unobservable Inputs (Level 3) | Pension Plans | Hedge Funds      
Defined Benefit Plan Disclosure [Line Items]      
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Significant Unobservable Inputs (Level 3) | Pension Plans | Private Equity      
Defined Benefit Plan Disclosure [Line Items]      
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Significant Unobservable Inputs (Level 3) | Pension Plans | Other      
Defined Benefit Plan Disclosure [Line Items]      
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