Pension and Postretirement Benefit Plans - Net Periodic Benefit Cost (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 29, 2024	Oct. 01, 2023	Sep. 29, 2024	Oct. 01, 2023
Pension Plan [Member] | U.S. [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 0	$ 0	$ 0	$ 0
Interest cost	139	147	416	442
Expected return on plan assets	(208)	(194)	(624)	(583)
Amortization of prior service cost/(credit)	0	0	1	1
Actuarial (gains)/losses	2	(11)	2	4
Curtailments			0	0
Special termination benefits	0	0	0	6
Net periodic benefit cost/(credit) reported in income	(68)	(58)	(206)	(131)
Pension Plan [Member] | International [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	21	21	65	65
Interest cost	78	73	233	216
Expected return on plan assets	(80)	(77)	(240)	(229)
Amortization of prior service cost/(credit)	1	0	3	0
Actuarial (gains)/losses	0	0	0	3
Curtailments			(2)	(1)
Special termination benefits	2	0	9	0
Net periodic benefit cost/(credit) reported in income	23	17	68	53
Postretirement Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	4	3	11	9
Interest cost	6	5	17	16
Expected return on plan assets	(13)	(11)	(38)	(33)
Amortization of prior service cost/(credit)	(28)	(29)	(87)	(90)
Actuarial (gains)/losses	0	0	0	0
Curtailments			0	(12)
Special termination benefits	0	0	0	0
Net periodic benefit cost/(credit) reported in income	$ (31)	$ (32)	$ (96)	$ (109)