Retirement Plans - Components of Net Periodic Pension Cost (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Retirement Benefits [Abstract]
Service cost	$ 11	$ 13	$ 36	$ 40
Interest cost	19	14	52	42
Expected return on plan assets	(47)	(49)	(152)	(148)
Amortization of unrecognized net actuarial losses	2	15	8	43
Settlement loss	0	1	2	5
Pension (income) expense	(15)	(6)	(54)	(18)
Net non-service pension (income) costs included in other, net	$ (26)	$ (19)	$ (90)	$ (58)