Postemployment Benefits Pension Plans-Projected Benefit Obligations, Plan Assets, and Funded Status (Details) - USD ($) $ in Millions	12 Months Ended
	Jan. 03, 2016	Dec. 28, 2014
U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Benefit obligation at beginning of year	$ 540	$ 639
Service cost	45	4
Interest cost	164	29
Benefits paid	(167)	(44)
Actuarial (gains)/losses	(121)	133
Plan amendments	7	0
Currency	0	0
Settlements	(977)	(220)
Curtailments	(148)	0
Special/contractual termination benefits	4	0
Assumption of Kraft's benefit obligations	6,645	0
Other	(2)	(1)
Benefit obligation at end of year	5,990	540
Fair value of plan assets at beginning of year	547	748
Actual return on plan assets	(34)	63
Participant's contributions	0	0
Employer contributions	227	0
Currency	0	0
Settlements	(977)	(220)
Assumption of Kraft's plan assets	5,686	0
Fair value of plan assets at end of year	5,282	547
Net pension liability/(asset) recognized at end of year	708	(7)
Non-U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Benefit obligation at beginning of year	2,611	2,587
Service cost	26	25
Interest cost	103	107
Benefits paid	(138)	(122)
Actuarial (gains)/losses	23	235
Plan amendments	0	0
Currency	(300)	(181)
Settlements	(655)	(5)
Curtailments	(50)	(45)
Special/contractual termination benefits	6	8
Assumption of Kraft's benefit obligations	1,264	0
Other	2	2
Benefit obligation at end of year	2,892	2,611
Fair value of plan assets at beginning of year	3,088	2,907
Actual return on plan assets	126	411
Participant's contributions	2	2
Employer contributions	59	102
Currency	(331)	(207)
Settlements	(655)	(5)
Assumption of Kraft's plan assets	1,277	0
Fair value of plan assets at end of year	3,428	3,088
Net pension liability/(asset) recognized at end of year	$ (536)	$ (477)