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Note 9 - Retirement Plans and Other Postretirement Benefits (Details) (USD $)
In Millions, unless otherwise specified
3 Months Ended
Mar. 31, 2015
Mar. 31, 2014
Note 9 - Retirement Plans and Other Postretirement Benefits (Details) [Line Items]    
Restructuring Charges $ 17us-gaap_RestructuringCharges $ 13us-gaap_RestructuringCharges
Defined Benefit Plan, Benefits Paid 2us-gaap_DefinedBenefitPlanBenefitsPaid  
Pension Plan [Member]    
Note 9 - Retirement Plans and Other Postretirement Benefits (Details) [Line Items]    
Defined Benefit Plan, Contributions by Employer 1us-gaap_DefinedBenefitPlanContributionsByEmployer
/ us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis
= us-gaap_PensionPlansDefinedBenefitMember
 
Special Termination Benefits [Member]    
Note 9 - Retirement Plans and Other Postretirement Benefits (Details) [Line Items]    
Restructuring Charges $ 4us-gaap_RestructuringCharges
/ us-gaap_RestructuringCostAndReserveAxis
= us-gaap_SpecialTerminationBenefitsMember