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Note 17 - Income Tax Benefit Reconciliation (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Income Tax Disclosure [Abstract]    
Amount computed using the statutory rate $ (3) $ (9)
Increase (reduction) in taxes resulting from:    
Unremitted foreign earnings 2 2
Impact of goodwill and intangible impairments   (21)
Operations outside the U.S. 28 14
Legislative tax law and rate changes 7 150
Valuation allowance (18) (266)
Tax settlements and adjustments, including interest (33) (11)
Discharge of debt and other reorganization related items 13 39
Embedded derivative liability conversion   (17)
Other, net   (1)
Total provision $ (4) $ (120)