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Note 18 - Income Taxes (Details Textual) - USD ($)
$ in Millions
1 Months Ended 3 Months Ended 12 Months Ended
Apr. 30, 2020
Dec. 31, 2018
Dec. 31, 2019
Dec. 31, 2018
Feb. 21, 2020
Oct. 31, 2018
Schedule Of Income Taxes [Line Items]            
Income tax benefit     $ 31 $ (4)    
Operating Loss Carryforwards     1,452      
Deferred Tax Assets, Operating Loss Carryforwards, Not Subject to Expiration     639      
Deferred Tax Assets, Operating Loss Carryforwards, Subject to Expiration     813      
Deferred Tax Assets, Tax Credit Carryforwards, Foreign   $ 357 355 357    
Accumulated Deferred Investment Tax Credit     $ 46      
Operating Loss Carryforwards Limitations Minimum Ownership Change Percentage     50.00%      
Operating Loss Carryforwards Limitations Ownership Change Period     3 years      
Provision for tax on undistributed earnings including foreign withholding tax     $ 19 22    
Deferred Tax Assets, Valuation Allowance   853 821 853    
Deferred Tax Assets, Net of Valuation Allowance   145 134 145    
Income Tax Examination, Penalties and Interest Accrued   16 14 16    
Uncertain Tax Benefits   26 20 26    
Minimum [Member]            
Schedule Of Income Taxes [Line Items]            
Decrease in Unrecognized Tax Benefits is Reasonably Possible     40      
Maximum [Member]            
Schedule Of Income Taxes [Line Items]            
Decrease in Unrecognized Tax Benefits is Reasonably Possible     50      
Valuation Allowance of Deferred Tax Assets [Member]            
Schedule Of Income Taxes [Line Items]            
Income tax benefit       (4)    
Provision associated with establishment of valuation allowance on deferred tax assets     19 15    
Foreign Tax Authority [Member]            
Schedule Of Income Taxes [Line Items]            
Deferred Tax Assets, Valuation Allowance   155 168 155    
Deferred Tax Assets, Net of Valuation Allowance   322 322 322    
Liability for Uncertain Tax Positions, Current   1 3 1    
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued   1 3 1    
Unrecognized tax benefits, settlements paid     2      
Other Tax Expense (Benefit)       (2)    
Foreign Tax Authority [Member] | Scenario, Forecast [Member]            
Schedule Of Income Taxes [Line Items]            
Unrecognized tax benefits, settlements paid $ 4          
Domestic Tax Authority [Member]            
Schedule Of Income Taxes [Line Items]            
Deferred Tax Assets, Valuation Allowance   698 653 698    
Deferred Tax Assets, Net of Valuation Allowance   676 $ 633 676    
Domestic Tax Authority [Member] | IRS [Member] | Subsequent Event [Member]            
Schedule Of Income Taxes [Line Items]            
Liability for Uncertain Tax Positions, Current         $ 41  
IRS and Korean National Tax Service Agreement [Member]            
Schedule Of Income Taxes [Line Items]            
Income tax examination, liability (refund) adjustment from settlement with taxing authority           $ 32
Proceeds from income tax refunds   16        
Payment of license fee [1]       $ 16    
Income tax benefit   (32)        
IRS and Korean National Tax Service Agreement [Member] | Other Operating Expense [Member]            
Schedule Of Income Taxes [Line Items]            
Payment of license fee   16        
IRS and Korean National Tax Service Agreement [Member] | Kodak [Member]            
Schedule Of Income Taxes [Line Items]            
Proceeds from income tax refunds   $ 16        
[1] Refer to Note 18, “Income Taxes”, section, “IRS and Korean National Tax Service Agreement”.