Consolidated Statement of Comprehensive Income (Unaudited) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Oct. 01, 2016	Sep. 30, 2017	Oct. 01, 2016
Statement of Comprehensive Income [Abstract]
Net income	$ 297	$ 292	$ 841	$ 747
Other comprehensive income (loss), pre-tax:
Foreign currency translation adjustments, pre-tax	(6)	(20)	4	(123)
Cash flow hedges, pre-tax:
Unrealized gain (loss) on cash flow hedges, pre-tax		3		(57)
Reclassification to net income, pre-tax	3	0	7	8
Postretirement and postemployment benefit amounts arising during the period, pre-tax:
Prior service credit (cost), pre-tax		0		(1)
Postretirement and postemployment benefits reclassification to net income, pre-tax:
Net experience loss	0	1	1	3
Prior service cost		1		3
Other comprehensive income (loss), pre-tax	(3)	(15)	12	(167)
Other comprehensive income (loss), tax (expense) benefit
Foreign currency translation adjustments, tax (expense) benefit	33	7	99	20
Cash flow hedges, tax (expense) benefit:
Unrealized gain (loss) on cash flow hedges, tax (expense) benefit		(1)		23
Reclassification to net income, tax (expense) benefit	(1)	(1)	(2)	(4)
Postretirement and postemployment benefit amounts arising during the period, tax (expense) benefit:
Prior service credit (cost), tax (expense) benefit		0		0
Postretirement and postemployment benefits reclassification to net income, tax (expense) benefit:
Net experience loss, tax (expense) benefit	0	0	0	0
Prior service cost, tax (expense) benefit		(1)		(1)
Other comprehensive income (loss), tax (expense) benefit	32	4	97	38
Other comprehensive income (loss), after tax:
Foreign currency translation adjustments, after-tax	27	(13)	103	(103)
Cash flow hedges, after tax
Unrealized gain (loss) on cash flow hedges, after-tax		2		(34)
Reclassification to net income, after-tax	2	(1)	5	4
Postretirement and postemployment benefit amounts arising during the period, after-tax:
Prior service credit (cost), after-tax		0		(1)
Postretirement and postemployment benefits reclassification to net income, after-tax:
Net experience loss, after-tax	0	1	1	3
Prior service cost, after-tax		0		2
Other comprehensive income (loss)	29	(11)	109	(129)
Comprehensive income	$ 326	$ 281	$ 950	$ 618