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Note 15 - Income Tax (Benefit) Provision Reconciliation (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Income Tax Disclosure [Abstract]      
Amount computed using the statutory rate $ (5) $ 18 $ (12)
Increase (reduction) in taxes resulting from:      
Unremitted foreign earnings 2 6 26
Impact of goodwill and intangible impairments (21)    
Operations outside the U.S. 13 20 28
Legislative tax law and rate changes 150 6  
Valuation allowance (259) (58) (71)
Tax settlements and adjustments, including interest (11) 2 2
Discharge of debt and other reorganization related items 39 40 60
Embedded derivative liability conversion (17)    
Other, net (1) (1) (1)
Total provision $ (110) $ 33 $ 32