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Note 9 - Retirement Plans and Other Postretirement Benefits (Details) - Pension (Income) Expense From Continuing Operations For All Defined Benefit Plans - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2015
Jun. 30, 2014
Jun. 30, 2015
Jun. 30, 2014
Major defined benefit plans:        
Interest cost   $ 1 $ 1 $ 2
Amortization of:        
Total net pension (income) expense   1 1 2
UNITED STATES        
Major defined benefit plans:        
Service cost $ 4 5 8 9
Interest cost 37 47 74 94
Expected return on plan assets (68) (77) (136) (154)
Amortization of:        
Prior service credit (2)   (4)  
Net pension income before special termination benefits (29) (25) (58) (51)
Special termination benefits 1   5  
Net pension income (28) (25) (53) (51)
Total net pension (income) expense (28) (25) (53) (51)
Non-U.S. [Member]        
Major defined benefit plans:        
Service cost 1 1 2 3
Interest cost 5 8 9 16
Expected return on plan assets (8) (10) (16) (20)
Amortization of:        
Actuarial gain     (1)  
Net pension income before special termination benefits (2) (1) (6) (1)
Net pension income (2) (1) (6) (1)
Other plans including unfunded plans $ 2 $ 1 4 3
Total net pension (income) expense     $ (2) $ 2