XML 79 R68.htm IDEA: XBRL DOCUMENT v3.21.2
Note 13 - Income Taxes (Details Textual) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Mar. 31, 2020
Sep. 30, 2020
Mar. 31, 2021
Feb. 21, 2020
Schedule Of Income Taxes [Line Items]        
U.S. corporate income tax rate   21.00%    
Valuation Allowance of Deferred Tax Assets [Member]        
Schedule Of Income Taxes [Line Items]        
Provision associated with establishment of valuation allowance on deferred tax assets $ 167 $ 167    
Foreign Tax Authority [Member]        
Schedule Of Income Taxes [Line Items]        
Liability for Uncertain Tax Positions, Current     $ 3  
Unrecognized Tax Benefits Income Tax Penalties And Interest Accrued     $ 4  
Domestic Tax Authority [Member] | IRS [Member]        
Schedule Of Income Taxes [Line Items]        
Liability for Uncertain Tax Positions, Current       $ 41