Pension, Retiree Medical and Savings Plans (Selected Information About Plans with Liability for Service to Date and Total Benefit Liability in Excess of Plan Assets) (Details) (USD $) In Millions, unless otherwise specified	Dec. 29, 2012	Dec. 31, 2011
U.S. [Member]
Selected information for plans with liability for service to date in excess of plan assets
Liability for service to date	$ (11,643)	$ (11,205)
Fair value of plan assets	10,817	9,072
Selected information for plans with projected benefit liability in excess of plan assets
Benefit liability	(12,886)	(11,901)
Fair value of plan assets	10,817	9,072
International [Member]
Selected information for plans with liability for service to date in excess of plan assets
Liability for service to date	(711)	(471)
Fair value of plan assets	552	344
Selected information for plans with projected benefit liability in excess of plan assets
Benefit liability	(2,542)	(2,191)
Fair value of plan assets	2,166	1,786
Retiree Medical Plan [Member]
Selected information for plans with projected benefit liability in excess of plan assets
Benefit liability	(1,511)	(1,563)
Fair value of plan assets	$ 365	$ 190

If aggregate disclosures are presented, the aggregate pension accumulated benefit obligation for pension plans with accumulated benefit obligations in excess of plan assets as of the measurement date of each statement of financial position presented.

+ References+ Details

- Definition

If aggregate disclosures are presented, the aggregate fair value of plan assets for pension plans with accumulated benefit obligations in excess of plan assets as of the measurement date of each statement of financial position presented.

+ References+ Details