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Consolidated Statements of Comprehensive Income (Loss) (Unaudited) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2019
Jun. 30, 2018
Jun. 30, 2019
Jun. 30, 2018
Statement Of Income And Comprehensive Income [Abstract]        
Net income $ 14 $ 14 $ 32 $ 16
Other comprehensive income (loss):        
Foreign currency translation adjustments 1 (20) 11 (19)
Comprehensive income (loss) $ 15 $ (6) $ 43 $ (3)