Components of Net Periodic Benefit Cost for Pension and Retiree Medical Plans (Detail) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 13, 2015	Jun. 14, 2014	Jun. 13, 2015	Jun. 14, 2014
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Contributions by Employer		$ 19
U.S.
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 100	90	$ 201	$ 181
Interest cost	126	134	252	268
Expected return on plan assets	(197)	(181)	(393)	(362)
Amortization of prior service cost/(credit)		4	(1)	9
Amortization of net losses/(gains)	48	41	95	81
Gross total	77	88	154	177
Special termination benefits	1		5	8
Total expense	78	88	159	185
International
Defined Benefit Plan Disclosure [Line Items]
Service cost	26	24	45	43
Interest cost	29	33	51	57
Expected return on plan assets	(45)	(44)	(78)	(76)
Amortization of net losses/(gains)	18	13	32	22
Gross total	28	26	50	46
Total expense	28	26	50	46
Retiree Medical
Defined Benefit Plan Disclosure [Line Items]
Service cost	8	8	16	16
Interest cost	12	14	24	28
Expected return on plan assets	(6)	(6)	(12)	(12)
Amortization of prior service cost/(credit)	(9)	(5)	(18)	(10)
Amortization of net losses/(gains)	1	(1)	1	(2)
Gross total	6	10	11	20
Special termination benefits		1	1	1
Total expense	$ 6	$ 11	$ 12	$ 21