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Note 12 - Income Tax Provision (Benefit) Reconciliation (Details) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2018
Sep. 30, 2017
Sep. 30, 2018
Sep. 30, 2017
Income Tax Disclosure [Abstract]        
Earnings (loss) from continuing operations before income taxes $ 24 $ (58) $ 11 $ (37)
Effective tax rate 20.80% 22.40% 118.20% 16.20%
Provision (benefit) for income taxes $ 5 $ (13) $ 13 $ (6)
Provision (benefit) for income taxes at U.S. statutory tax rate $ 5 (20) 2 (13)
Difference between tax at effective vs. statutory rate   $ 7 $ 11 $ 7