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Income Taxes (Details) - USD ($)
3 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Income Tax Disclosure [Abstract]    
Provisional income tax benefit $ 71,000,000  
Foreign withholding income tax 45,000,000 $ 45,000,000
Valuation allowance against deferred tax asset $ 26,000,000 26,000,000
Withholding tax due   $ 0