Derivative Instruments and Fair Value Measurements - Effect of Derivative Instruments on the Consolidated Statements of Income and Comprehensive Income (Details) - USD ($) $ in Millions		3 Months Ended		9 Months Ended
		Sep. 30, 2017	Oct. 01, 2016	Sep. 30, 2017	Oct. 01, 2016
Not Designated as Hedging Instrument
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) recognized in income		$ (33)	$ (12)	$ (57)	$ 0
Not Designated as Hedging Instrument | Foreign currency exchange contracts | COGS
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) recognized in income		0	3	(13)	(7)
Not Designated as Hedging Instrument | Foreign currency exchange contracts | Selling, General and Administrative Expenses [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) recognized in income		(1)	0	(2)	0
Not Designated as Hedging Instrument | Foreign currency exchange contracts | Other income (expense), net
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) recognized in income		(3)	(1)	(11)	9
Not Designated as Hedging Instrument | Commodity contracts | COGS
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) recognized in income		(13)	(14)	(16)	(4)
Not Designated as Hedging Instrument | Commodity contracts | Selling, General and Administrative Expenses [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) recognized in income		(16)	0	(15)	2
Fair Value Hedges
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) recognized in income	[1]	4	6
Fair Value Hedges | Interest rate contracts | Interest expense
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) recognized in income	[1]	4	6	14	15
Cash Flow Hedging
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) recognized in AOCI		0	3	1	(57)
Gain (loss) reclassified from AOCI into income		(3)	0	(7)	(8)
Gain (loss) recognized in income	[1]	0	(1)	0	(2)
Cash Flow Hedging | Foreign Exchange Contracts, One [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) recognized in AOCI		0	1	0	10
Cash Flow Hedging | Foreign Exchange Contracts, One [Member] | COGS
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) reclassified from AOCI into income		0	4	1	11
Cash Flow Hedging | Foreign Exchange Contracts, One [Member] | Other income (expense), net
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) recognized in income	[1]	0	(1)	0	(2)
Cash Flow Hedging | Foreign Exchange Contracts, Two [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) recognized in AOCI		0	1	0	1
Cash Flow Hedging | Foreign Exchange Contracts, Two [Member] | Selling, General and Administrative Expenses [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) reclassified from AOCI into income		0	1	0	1
Cash Flow Hedging | Foreign Exchange Contracts, Two [Member] | Other income (expense), net
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) recognized in income	[1]	0	0	0	0
Cash Flow Hedging | Interest rate contracts
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) recognized in AOCI		0	1	1	(68)
Gain (loss) recognized in income	[1]	0	0	0	0
Cash Flow Hedging | Interest rate contracts | Interest expense
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) reclassified from AOCI into income		(3)	(2)	(8)	(10)
Cash Flow Hedging | Commodity contracts
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) recognized in AOCI		0	0	0	0
Cash Flow Hedging | Commodity contracts | COGS
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) reclassified from AOCI into income		0	(3)	0	(10)
Cash Flow Hedging | Commodity contracts | Other income (expense), net
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) recognized in income	[1]	0	0	0	0
Net Investment Hedging
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) recognized in AOCI				(272)	(54)
Net Investment Hedging | Foreign currency denominated long-term debt
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) recognized in AOCI		$ (90)	$ (19)	(272)	(31)
Net Investment Hedging | Foreign currency exchange contracts
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) recognized in AOCI				$ 0	$ (23)

[1] Includes the ineffective portion and amount excluded from effectiveness testing.