Postemployment Benefits Pension Plans-Components of Net Pension Cost/(Benefit)-(Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Oct. 02, 2016	Sep. 27, 2015	Oct. 02, 2016	Sep. 27, 2015
U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 3	$ 22	$ 10	$ 25
Interest cost	52	82	158	91
Expected return on plan assets	(73)	(86)	(221)	(94)
Amortization of unrecognized losses/(gains)	0	1	0	3
Settlements	26	0	20	0
Curtailments	0	(1)	0	(1)
Special/contractual termination benefits	0	3	0	3
Defined benefit plan net cost/(benefit)	8	21	(33)	27
Non-U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Service cost	6	8	18	18
Interest cost	21	30	64	73
Expected return on plan assets	(44)	(55)	(137)	(140)
Amortization of unrecognized losses/(gains)	0	0	0	0
Settlements	0	8	0	19
Curtailments	0	(7)	0	(9)
Special/contractual termination benefits	0	4	0	4
Defined benefit plan net cost/(benefit)	$ (17)	$ (12)	$ (55)	$ (35)