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Note 16 - Financial Instruments (Details) - Financial Instruments Not Recorded at Fair Value (USD $)
In Millions, unless otherwise specified
Mar. 31, 2015
Dec. 31, 2014
Debt    
Short-term debt $ 6us-gaap_DebtCurrent $ 5us-gaap_DebtCurrent
Financial liabilities, current 6us-gaap_ShorttermDebtFairValue 5us-gaap_ShorttermDebtFairValue
Long-term debt 671us-gaap_LongTermDebtNoncurrent 672us-gaap_LongTermDebtNoncurrent
Financial liabilities, non-current 698us-gaap_LongTermDebtFairValue 681us-gaap_LongTermDebtFairValue
Fair Value, Inputs, Level 2 [Member]    
Debt    
Short-term debt 6us-gaap_DebtCurrent
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel2Member
5us-gaap_DebtCurrent
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel2Member
Financial liabilities, current 6us-gaap_ShorttermDebtFairValue
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel2Member
5us-gaap_ShorttermDebtFairValue
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel2Member
Long-term debt 671us-gaap_LongTermDebtNoncurrent
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel2Member
672us-gaap_LongTermDebtNoncurrent
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel2Member
Financial liabilities, non-current $ 698us-gaap_LongTermDebtFairValue
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel2Member
$ 681us-gaap_LongTermDebtFairValue
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel2Member