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Note 12 - Income Tax Provision (Benefit) Reconciliation (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2018
Jun. 30, 2017
Jun. 30, 2018
Jun. 30, 2017
Income Tax Disclosure [Abstract]        
Earnings (loss) from continuing operations before income taxes $ 5 $ 11 $ (13) $ 21
Effective tax rate 20.00% 36.40% (61.50%) 33.30%
Provision for income taxes $ 1 $ 4 $ 8 $ 7
Provision (benefit) for income taxes at U.S. statutory tax rate $ 1 $ 4 (3) $ 7
Difference between tax at effective vs. statutory rate     $ 11