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Note 13 - Income Taxes - Schedule of Income Tax Provision and Effective Tax Rate (Details) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Sep. 30, 2021
Sep. 30, 2020
Income Tax Disclosure [Abstract]        
Earnings (loss) from operations before income taxes $ 9 $ (444) $ 35 $ (394)
Effective tax rate 11.10% (0.20%) 14.30% (42.40%)
Provision for income taxes $ 1 $ 1 $ 5 $ 167
Provision (benefit) for income taxes at U.S. statutory tax rate 2 (93) 7 (83)
Difference between tax at effective vs. statutory rate $ (1) $ 94 $ (2) $ 250