Pension and Postretirement Benefit Plans - Net Periodic Benefit Cost (Detail) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 29, 2025	Jun. 30, 2024	Jun. 29, 2025	Jun. 30, 2024
Pension Plan [Member] | U.S. [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 0	$ 0	$ 0	$ 0
Interest cost	133	139	265	277
Expected return on plan assets	(184)	(208)	(368)	(416)
Amortization of prior service cost/(credit)	0	0	0	1
Curtailments	0	0	0	0
Special termination benefits	0	0	0	0
Net periodic benefit cost/(credit) reported in income	(51)	(69)	(102)	(139)
Pension Plan [Member] | International [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	26	23	50	44
Interest cost	72	77	143	155
Expected return on plan assets	(81)	(80)	(161)	(160)
Amortization of prior service cost/(credit)	1	1	2	2
Curtailments	0	0	(9)	(2)
Special termination benefits	0	2	0	6
Net periodic benefit cost/(credit) reported in income	18	23	26	46
Postretirement Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	4	4	8	7
Interest cost	6	6	13	12
Expected return on plan assets	(14)	(13)	(28)	(25)
Amortization of prior service cost/(credit)	(25)	(29)	(57)	(59)
Curtailments	(9)	0	(59)	0
Special termination benefits	0	0	0	0
Net periodic benefit cost/(credit) reported in income	$ (38)	$ (33)	$ (123)	$ (65)