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Note 4 - Debt (Details)
3 Months Ended
Mar. 31, 2013
USD ($)
Jun. 30, 2014
USD ($)
Dec. 31, 2013
USD ($)
Jun. 30, 2014
Commercial Paper [Member]
USD ($)
Jun. 30, 2013
Commercial Paper [Member]
USD ($)
Mar. 31, 2013
Amended Credit Facility [Member]
USD ($)
Mar. 31, 2013
Foreign Line of Credit [Member]
CNY
Note 4 - Debt (Details) [Line Items]              
Debt Instrument, Fair Value Disclosure   $ 3,600,000,000 $ 3,500,000,000        
Long-term Debt and Capital Lease Obligations   3,238,000,000 3,272,000,000        
Long-term Line of Credit       416,000,000      
Line of Credit Facility, Maximum Borrowing Capacity         1,000,000,000 1,000,000,000 4,000,000,000
Repayments of Lines of Credit $ 500,000,000