Pension and Retiree Medical Benefits (Components of Benefit Expense) (Details) (USD $) In Millions	3 Months Ended		6 Months Ended
	Jun. 11, 2011	Jun. 12, 2010	Jun. 11, 2011	Jun. 12, 2010
U.S. [Member]
Service cost	$ 80	$ 69	$ 162	$ 130
Interest cost	126	120	252	218
Expected return on plan assets	(162)	(150)	(324)	(275)
Amortization of prior service cost/(benefit)	4	2	7	5
Amortization of experience loss	34	25	67	50
Gross total	82	66	164	128
Settlement/Curtailment gain		(2)	(9)	(2)
Special termination benefits		15	10	23
Total expense	82	79	165	149
International [Member]
Service cost	23	19	40	33
Interest cost	28	26	49	44
Expected return on plan assets	(33)	(31)	(57)	(53)
Amortization of prior service cost/(benefit)	1	1	1	1
Amortization of experience loss	9	6	16	10
Gross total	28	21	49	35
Settlement/Curtailment gain
Special termination benefits
Total expense	28	21	49	35
Retiree Medical [Member]
Service cost	11	14	23	26
Interest cost	21	23	41	43
Expected return on plan assets	(4)		(7)
Amortization of prior service cost/(benefit)	(6)	(4)	(13)	(8)
Amortization of experience loss	3	1	6	2
Gross total	25	34	50	63
Settlement/Curtailment gain
Special termination benefits		1	1	1
Total expense	$ 25	$ 35	$ 51	$ 64