Net Income (Loss) Per Share - Computation of Basic and Diluted Net Income (Loss) Per Share (Detail) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended				6 Months Ended
	Jun. 30, 2024	Mar. 31, 2024	Jun. 30, 2023	Mar. 31, 2023	Jun. 30, 2024	Jun. 30, 2023
Numerator:
Net Income (Loss)	$ 23	$ 15	$ (1,769)	$ (42)	$ 37	$ (1,812)
Denominator:
Shares used in net income (loss) per common share - basic	67.3		66.8		67.2	66.8
Effect of dilutive securities	0.2		0.0		0.3	0.0
Shares used in net income (loss) per common share - diluted	67.5		66.8		67.5	66.8
Net income (loss) per common share:
Basic	$ 0.34		$ (26.47)		$ 0.56	$ (27.14)
Net income (loss) per common share:
Diluted	$ 0.33		$ (26.47)		$ 0.55	$ (27.14)