Annual report pursuant to Section 13 and 15(d)

Summary of Significant Accounting Policies - Accumulated Other Comprehensive Income (Loss) (Details)

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Summary of Significant Accounting Policies - Accumulated Other Comprehensive Income (Loss) (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Accumulated Other Comprehensive Income (Loss) [Line Items]        
Stockholders’ (deficit) equity $ (2,625) $ (2,285) $ (736) $ (1,817)
Foreign currency translation adjustment income (loss), net of tax 0 7 14  
Accumulated Other Comprehensive Income        
Accumulated Other Comprehensive Income (Loss) [Line Items]        
Stockholders’ (deficit) equity $ 15 $ 15 $ 8 $ (6)