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Consolidated Statements of Comprehensive Loss (Parenthetical) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2020
Jun. 30, 2019
Jun. 30, 2020
Jun. 30, 2019
Statement of Comprehensive Income [Abstract]        
Unrealized loss on derivatives income tax expense (benefit) $ 1 $ 0 $ (1) $ 0