Retirement Plans - Components of Net Periodic Pension Cost (Detail) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Retirement Benefits [Abstract]
Service cost	$ 10	$ 9
Interest cost	23	25
Expected return on plan assets	(38)	(39)
Amortization of unrecognized net actuarial losses	0	0
Pension (income) expense	(5)	(5)
Net non-service pension (income) costs included in other, net	$ (15)	$ (14)