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Note 16 - Retirement Plans (Details) - Fair Value Measurement of Plan Assets - USD ($)
$ in Millions
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Major US Plans [Member]      
Note 16 - Retirement Plans (Details) - Fair Value Measurement of Plan Assets [Line Items]      
Fair Value of Plan Assets $ 3,793 $ 4,160  
Major Non-U.S. Plans [Member]      
Note 16 - Retirement Plans (Details) - Fair Value Measurement of Plan Assets [Line Items]      
Fair Value of Plan Assets 728 795  
Cash and Cash Equivalents [Member] | Major US Plans [Member]      
Note 16 - Retirement Plans (Details) - Fair Value Measurement of Plan Assets [Line Items]      
Fair Value of Plan Assets 34 115  
Cash and Cash Equivalents [Member] | Major Non-U.S. Plans [Member]      
Note 16 - Retirement Plans (Details) - Fair Value Measurement of Plan Assets [Line Items]      
Fair Value of Plan Assets 21 36  
Equity Securities [Member] | Major US Plans [Member]      
Note 16 - Retirement Plans (Details) - Fair Value Measurement of Plan Assets [Line Items]      
Fair Value of Plan Assets 571 632  
Equity Securities [Member] | Major Non-U.S. Plans [Member]      
Note 16 - Retirement Plans (Details) - Fair Value Measurement of Plan Assets [Line Items]      
Fair Value of Plan Assets 22 46  
Government Bonds [Member] | Major US Plans [Member]      
Note 16 - Retirement Plans (Details) - Fair Value Measurement of Plan Assets [Line Items]      
Fair Value of Plan Assets 924 989  
Government Bonds [Member] | Major Non-U.S. Plans [Member]      
Note 16 - Retirement Plans (Details) - Fair Value Measurement of Plan Assets [Line Items]      
Fair Value of Plan Assets 156 153  
Investment Grade Bonds [Member] | Major US Plans [Member]      
Note 16 - Retirement Plans (Details) - Fair Value Measurement of Plan Assets [Line Items]      
Fair Value of Plan Assets 382 442  
Investment Grade Bonds [Member] | Major Non-U.S. Plans [Member]      
Note 16 - Retirement Plans (Details) - Fair Value Measurement of Plan Assets [Line Items]      
Fair Value of Plan Assets 90 37  
Real Estate [Member] | Major US Plans [Member]      
Note 16 - Retirement Plans (Details) - Fair Value Measurement of Plan Assets [Line Items]      
Fair Value of Plan Assets 130 139  
Real Estate [Member] | Major Non-U.S. Plans [Member]      
Note 16 - Retirement Plans (Details) - Fair Value Measurement of Plan Assets [Line Items]      
Fair Value of Plan Assets 2 2  
Global Balanced Asset Allocation Funds [Member] | Major US Plans [Member]      
Note 16 - Retirement Plans (Details) - Fair Value Measurement of Plan Assets [Line Items]      
Fair Value of Plan Assets 492 587  
Global Balanced Asset Allocation Funds [Member] | Major Non-U.S. Plans [Member]      
Note 16 - Retirement Plans (Details) - Fair Value Measurement of Plan Assets [Line Items]      
Fair Value of Plan Assets 47 91  
Absolute Return [Member] | Major US Plans [Member]      
Note 16 - Retirement Plans (Details) - Fair Value Measurement of Plan Assets [Line Items]      
Fair Value of Plan Assets 487 426  
Absolute Return [Member] | Major Non-U.S. Plans [Member]      
Note 16 - Retirement Plans (Details) - Fair Value Measurement of Plan Assets [Line Items]      
Fair Value of Plan Assets 12 11  
Private Equity Funds [Member] | Major US Plans [Member]      
Note 16 - Retirement Plans (Details) - Fair Value Measurement of Plan Assets [Line Items]      
Fair Value of Plan Assets 768 780  
Private Equity Funds [Member] | Major Non-U.S. Plans [Member]      
Note 16 - Retirement Plans (Details) - Fair Value Measurement of Plan Assets [Line Items]      
Fair Value of Plan Assets 61 56  
Derivatives with Unrealized Gains [Member] | Major US Plans [Member]      
Note 16 - Retirement Plans (Details) - Fair Value Measurement of Plan Assets [Line Items]      
Fair Value of Plan Assets 5 50  
Derivatives with Unrealized Gains [Member] | Major Non-U.S. Plans [Member]      
Note 16 - Retirement Plans (Details) - Fair Value Measurement of Plan Assets [Line Items]      
Fair Value of Plan Assets 2 5  
Inflation Linked Bonds [Member] | Major Non-U.S. Plans [Member]      
Note 16 - Retirement Plans (Details) - Fair Value Measurement of Plan Assets [Line Items]      
Fair Value of Plan Assets 3 9  
Global High Yield and Emerging Market Debt [Member] | Major Non-U.S. Plans [Member]      
Note 16 - Retirement Plans (Details) - Fair Value Measurement of Plan Assets [Line Items]      
Fair Value of Plan Assets 3 11  
Insurance Contracts [Member] | Major Non-U.S. Plans [Member]      
Note 16 - Retirement Plans (Details) - Fair Value Measurement of Plan Assets [Line Items]      
Fair Value of Plan Assets 311 340  
Derivatives with Unrealized Losses [Member] | Major Non-U.S. Plans [Member]      
Note 16 - Retirement Plans (Details) - Fair Value Measurement of Plan Assets [Line Items]      
Fair Value of Plan Assets (2) (2)  
Fair Value, Inputs, Level 1 [Member] | Major US Plans [Member]      
Note 16 - Retirement Plans (Details) - Fair Value Measurement of Plan Assets [Line Items]      
Fair Value of Plan Assets 7 51  
Fair Value, Inputs, Level 1 [Member] | Major Non-U.S. Plans [Member]      
Note 16 - Retirement Plans (Details) - Fair Value Measurement of Plan Assets [Line Items]      
Fair Value of Plan Assets 5 7  
Fair Value, Inputs, Level 1 [Member] | Cash and Cash Equivalents [Member] | Major US Plans [Member]      
Note 16 - Retirement Plans (Details) - Fair Value Measurement of Plan Assets [Line Items]      
Fair Value of Plan Assets 2 1  
Fair Value, Inputs, Level 1 [Member] | Cash and Cash Equivalents [Member] | Major Non-U.S. Plans [Member]      
Note 16 - Retirement Plans (Details) - Fair Value Measurement of Plan Assets [Line Items]      
Fair Value of Plan Assets 5 4  
Fair Value, Inputs, Level 1 [Member] | Derivatives with Unrealized Gains [Member] | Major US Plans [Member]      
Note 16 - Retirement Plans (Details) - Fair Value Measurement of Plan Assets [Line Items]      
Fair Value of Plan Assets 5 50  
Fair Value, Inputs, Level 1 [Member] | Derivatives with Unrealized Gains [Member] | Major Non-U.S. Plans [Member]      
Note 16 - Retirement Plans (Details) - Fair Value Measurement of Plan Assets [Line Items]      
Fair Value of Plan Assets 2 5  
Fair Value, Inputs, Level 1 [Member] | Derivatives with Unrealized Losses [Member] | Major Non-U.S. Plans [Member]      
Note 16 - Retirement Plans (Details) - Fair Value Measurement of Plan Assets [Line Items]      
Fair Value of Plan Assets (2) (2)  
Fair Value, Inputs, Level 2 [Member] | Major US Plans [Member]      
Note 16 - Retirement Plans (Details) - Fair Value Measurement of Plan Assets [Line Items]      
Fair Value of Plan Assets 382 442  
Fair Value, Inputs, Level 2 [Member] | Major Non-U.S. Plans [Member]      
Note 16 - Retirement Plans (Details) - Fair Value Measurement of Plan Assets [Line Items]      
Fair Value of Plan Assets 407 431  
Fair Value, Inputs, Level 2 [Member] | Equity Securities [Member] | Major Non-U.S. Plans [Member]      
Note 16 - Retirement Plans (Details) - Fair Value Measurement of Plan Assets [Line Items]      
Fair Value of Plan Assets 6 8  
Fair Value, Inputs, Level 2 [Member] | Government Bonds [Member] | Major Non-U.S. Plans [Member]      
Note 16 - Retirement Plans (Details) - Fair Value Measurement of Plan Assets [Line Items]      
Fair Value of Plan Assets 39 39  
Fair Value, Inputs, Level 2 [Member] | Investment Grade Bonds [Member] | Major US Plans [Member]      
Note 16 - Retirement Plans (Details) - Fair Value Measurement of Plan Assets [Line Items]      
Fair Value of Plan Assets 382 442  
Fair Value, Inputs, Level 2 [Member] | Investment Grade Bonds [Member] | Major Non-U.S. Plans [Member]      
Note 16 - Retirement Plans (Details) - Fair Value Measurement of Plan Assets [Line Items]      
Fair Value of Plan Assets 45 37  
Fair Value, Inputs, Level 2 [Member] | Real Estate [Member] | Major Non-U.S. Plans [Member]      
Note 16 - Retirement Plans (Details) - Fair Value Measurement of Plan Assets [Line Items]      
Fair Value of Plan Assets 2 2  
Fair Value, Inputs, Level 2 [Member] | Global Balanced Asset Allocation Funds [Member] | Major Non-U.S. Plans [Member]      
Note 16 - Retirement Plans (Details) - Fair Value Measurement of Plan Assets [Line Items]      
Fair Value of Plan Assets   1  
Fair Value, Inputs, Level 2 [Member] | Absolute Return [Member] | Major Non-U.S. Plans [Member]      
Note 16 - Retirement Plans (Details) - Fair Value Measurement of Plan Assets [Line Items]      
Fair Value of Plan Assets 4 4  
Fair Value, Inputs, Level 2 [Member] | Insurance Contracts [Member] | Major Non-U.S. Plans [Member]      
Note 16 - Retirement Plans (Details) - Fair Value Measurement of Plan Assets [Line Items]      
Fair Value of Plan Assets 311 340  
Fair Value, Inputs, Level 3 [Member] | Major US Plans [Member]      
Note 16 - Retirement Plans (Details) - Fair Value Measurement of Plan Assets [Line Items]      
Fair Value of Plan Assets 58 69  
Fair Value, Inputs, Level 3 [Member] | Major Non-U.S. Plans [Member]      
Note 16 - Retirement Plans (Details) - Fair Value Measurement of Plan Assets [Line Items]      
Fair Value of Plan Assets   69 $ 101
Fair Value, Inputs, Level 3 [Member] | Real Estate [Member] | Major US Plans [Member]      
Note 16 - Retirement Plans (Details) - Fair Value Measurement of Plan Assets [Line Items]      
Fair Value of Plan Assets 34 41  
Fair Value, Inputs, Level 3 [Member] | Real Estate [Member] | Major Non-U.S. Plans [Member]      
Note 16 - Retirement Plans (Details) - Fair Value Measurement of Plan Assets [Line Items]      
Fair Value of Plan Assets   41 47
Fair Value, Inputs, Level 3 [Member] | Private Equity Funds [Member] | Major US Plans [Member]      
Note 16 - Retirement Plans (Details) - Fair Value Measurement of Plan Assets [Line Items]      
Fair Value of Plan Assets 24 28  
Fair Value, Inputs, Level 3 [Member] | Private Equity Funds [Member] | Major Non-U.S. Plans [Member]      
Note 16 - Retirement Plans (Details) - Fair Value Measurement of Plan Assets [Line Items]      
Fair Value of Plan Assets   28 $ 54
Measured at NAV [Member] | Major US Plans [Member]      
Note 16 - Retirement Plans (Details) - Fair Value Measurement of Plan Assets [Line Items]      
Fair Value of Plan Assets 3,346 3,598  
Measured at NAV [Member] | Major Non-U.S. Plans [Member]      
Note 16 - Retirement Plans (Details) - Fair Value Measurement of Plan Assets [Line Items]      
Fair Value of Plan Assets 316 357  
Measured at NAV [Member] | Cash and Cash Equivalents [Member] | Major US Plans [Member]      
Note 16 - Retirement Plans (Details) - Fair Value Measurement of Plan Assets [Line Items]      
Fair Value of Plan Assets 32 114  
Measured at NAV [Member] | Cash and Cash Equivalents [Member] | Major Non-U.S. Plans [Member]      
Note 16 - Retirement Plans (Details) - Fair Value Measurement of Plan Assets [Line Items]      
Fair Value of Plan Assets 16 32  
Measured at NAV [Member] | Equity Securities [Member] | Major US Plans [Member]      
Note 16 - Retirement Plans (Details) - Fair Value Measurement of Plan Assets [Line Items]      
Fair Value of Plan Assets 571 632  
Measured at NAV [Member] | Equity Securities [Member] | Major Non-U.S. Plans [Member]      
Note 16 - Retirement Plans (Details) - Fair Value Measurement of Plan Assets [Line Items]      
Fair Value of Plan Assets 16 38  
Measured at NAV [Member] | Government Bonds [Member] | Major US Plans [Member]      
Note 16 - Retirement Plans (Details) - Fair Value Measurement of Plan Assets [Line Items]      
Fair Value of Plan Assets 924 989  
Measured at NAV [Member] | Government Bonds [Member] | Major Non-U.S. Plans [Member]      
Note 16 - Retirement Plans (Details) - Fair Value Measurement of Plan Assets [Line Items]      
Fair Value of Plan Assets 117 114  
Measured at NAV [Member] | Investment Grade Bonds [Member] | Major Non-U.S. Plans [Member]      
Note 16 - Retirement Plans (Details) - Fair Value Measurement of Plan Assets [Line Items]      
Fair Value of Plan Assets 45    
Measured at NAV [Member] | Real Estate [Member] | Major US Plans [Member]      
Note 16 - Retirement Plans (Details) - Fair Value Measurement of Plan Assets [Line Items]      
Fair Value of Plan Assets 96 98  
Measured at NAV [Member] | Global Balanced Asset Allocation Funds [Member] | Major US Plans [Member]      
Note 16 - Retirement Plans (Details) - Fair Value Measurement of Plan Assets [Line Items]      
Fair Value of Plan Assets 492 587  
Measured at NAV [Member] | Global Balanced Asset Allocation Funds [Member] | Major Non-U.S. Plans [Member]      
Note 16 - Retirement Plans (Details) - Fair Value Measurement of Plan Assets [Line Items]      
Fair Value of Plan Assets 47 90  
Measured at NAV [Member] | Absolute Return [Member] | Major US Plans [Member]      
Note 16 - Retirement Plans (Details) - Fair Value Measurement of Plan Assets [Line Items]      
Fair Value of Plan Assets 487 426  
Measured at NAV [Member] | Absolute Return [Member] | Major Non-U.S. Plans [Member]      
Note 16 - Retirement Plans (Details) - Fair Value Measurement of Plan Assets [Line Items]      
Fair Value of Plan Assets 8 7  
Measured at NAV [Member] | Private Equity Funds [Member] | Major US Plans [Member]      
Note 16 - Retirement Plans (Details) - Fair Value Measurement of Plan Assets [Line Items]      
Fair Value of Plan Assets 744 752  
Measured at NAV [Member] | Private Equity Funds [Member] | Major Non-U.S. Plans [Member]      
Note 16 - Retirement Plans (Details) - Fair Value Measurement of Plan Assets [Line Items]      
Fair Value of Plan Assets 61 56  
Measured at NAV [Member] | Inflation Linked Bonds [Member] | Major Non-U.S. Plans [Member]      
Note 16 - Retirement Plans (Details) - Fair Value Measurement of Plan Assets [Line Items]      
Fair Value of Plan Assets 3 9  
Measured at NAV [Member] | Global High Yield and Emerging Market Debt [Member] | Major Non-U.S. Plans [Member]      
Note 16 - Retirement Plans (Details) - Fair Value Measurement of Plan Assets [Line Items]      
Fair Value of Plan Assets $ 3 $ 11