Loss per Share - Calculation of Basic and Diluted (Loss ) Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Numerator:
Numerator for basic and diluted loss per share - net loss	$ (163)	$ (283)	$ (564)	$ (980)
Denominator:
Denominator for basic loss per share - weighted-average number of shares of common stock outstanding (in shares)	116	106	113	106
Denominator for diluted loss per share - weighted-average number of shares of common stock outstanding (in shares)	116	106	113	106
Loss per share:
Basic (in dollars per share)	$ (1.40)	$ (2.66)	$ (4.99)	$ (9.28)
Diluted (in dollars per shares)	$ (1.40)	$ (2.66)	$ (4.99)	$ (9.28)