Pension Benefits (Change in Projected Benefit Obligation, Plan Assets, and Funding Status) (Details) (USD $)	12 Months Ended
	Dec. 28, 2013	Dec. 29, 2012
Amounts recognized in the Consolidated Balance Sheet consist of
Other assets	$ 419,000,000	$ 145,000,000
Other liabilities	(277,000,000)	(886,000,000)
Amounts recognized in accumulated other comprehensive income consist of
Accumulated benefit obligation for all defined benefit pension plans	4,500,000,000	4,700,000,000
Pension [Member]
Change in projected benefit obligation
Beginning of year	5,135,000,000	4,367,000,000
Service cost	133,000,000	110,000,000
Interest cost	203,000,000	207,000,000
Plan participants' contributions	2,000,000	2,000,000
Amendments	4,000,000	23,000,000
Actuarial gain (loss)	(407,000,000)	535,000,000
Benefits paid	(218,000,000)	(213,000,000)
Acquisitions	17,000,000	47,000,000
Curtailment and special termination benefits	26,000,000	0
Foreign currency adjustments	(7,000,000)	57,000,000
End of year	4,888,000,000	5,135,000,000
Change in plan assets
Fair value beginning of year	4,374,000,000	3,931,000,000
Actual return on plan assets	802,000,000	508,000,000
Employer contributions	34,000,000	38,000,000
Plan participants' contributions	2,000,000	2,000,000
Benefits paid, Plan Assets	(200,000,000)	(187,000,000)
Acquisition	0	23,000,000
Foreign currency adjustments	2,000,000	59,000,000
Fair value end of year	5,014,000,000	4,374,000,000
Funded status	126,000,000	(761,000,000)
Amounts recognized in the Consolidated Balance Sheet consist of
Other assets	419,000,000	145,000,000
Other current liabilities	(16,000,000)	(20,000,000)
Other liabilities	(277,000,000)	(886,000,000)
Net amount recognized	126,000,000	(761,000,000)
Amounts recognized in accumulated other comprehensive income consist of
Prior service cost	73,000,000	94,000,000
Net amount recognized	$ 73,000,000	$ 94,000,000