Pension - Components of Net Periodic Pension Benefit (Detail) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
	Jun. 30, 2022	Jun. 30, 2022
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract]
Service cost	$ 4	$ 6
Interest cost	8	17
Expected return on plan assets	(18)	(38)
Net periodic pension benefit	$ (6)	$ (15)