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Note 19 - Changes in Other Comprehensive Loss, by Component (Details) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2019
Mar. 31, 2018
Other Comprehensive Income Loss Net Of Tax Period Increase Decrease [Abstract]    
Currency translation adjustments $ 3 $ 13
Amortization of prior service credit [1] (1) (2)
Amortization of actuarial (gains) losses [1]   1
Recognition of losses due to settlement   1
Total reclassification adjustments (1)  
Reclassification adjustments, net of tax (1)  
Pension and other postretirement benefit plan changes, net of tax (1)  
Other comprehensive income, net of tax $ 2 $ 13
[1] Reclassified to Total Net Periodic Benefit Cost - refer to Note 16, "Retirement Plans and Other Postretirement Benefits".