Retirement Plans - Components of Net Periodic Pension Cost (Detail) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Retirement Benefits [Abstract]
Service cost	$ 9	$ 13
Interest cost	25	16
Expected return on plan assets	(39)	(53)
Amortization of unrecognized net actuarial losses	0	3
Pension (income) expense	(5)	(21)
Net non-service pension (income) costs included in other, net	$ (14)	$ (34)