Pension, Retiree Medical and Savings Plans (Estimated Amounts to be Amortized from Accumulated Other Comprehensive Loss into Benefit Expense in 2012 for Pension and Retiree Medical Plans) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 28, 2013
United States Pension Plan of US Entity, Defined Benefit
Defined Benefit Plan Disclosure [Line Items]
Net loss/(gain)	$ 175
Prior service cost/(credit)	21
Total	196
International
Defined Benefit Plan Disclosure [Line Items]
Net loss/(gain)	53
Prior service cost/(credit)
Total	53
Retiree Medical Plan
Defined Benefit Plan Disclosure [Line Items]
Net loss/(gain)	(6)
Prior service cost/(credit)	(22)
Total	$ (28)