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Note 18 - Income Tax Provision (Benefit) Reconciliation (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Income Tax Disclosure [Abstract]    
Amount computed using the statutory rate $ (13) $ (3)
Increase (reduction) in taxes resulting from:    
Unremitted foreign earnings (1) 2
Operations outside the U.S. 22 28
Legislative tax law and rate changes 1 7
Valuation allowance 11 (18)
Tax settlements and adjustments, including interest 2 (33)
Discharge of debt and other reorganization related items   13
Embedded derivative liability 9  
Total provision $ 31 $ (4)