Derivative Instruments and Fair Value Measurements Derivative Instruments and Fair Value Measurements - Schedule of Effect of Fair Value and Cash Flow Hedge Accounting on Consolidated Statement of Income (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jul. 01, 2017	Jun. 30, 2018	Jul. 01, 2017
Derivative Instruments, Gain (Loss) [Line Items]
Cost of goods sold	$ 2,151	$ 1,950	$ 4,300	$ 4,038
Interest Expense, Debt	72	63	141	124
Foreign currency exchange contracts | COGS | Designated as Hedging Instrument | Cash Flow Hedging
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) reclassified from AOCI into income				1
Foreign currency exchange contracts | Interest expense | Designated as Hedging Instrument | Cash Flow Hedging
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) reclassified from AOCI into income	0	0	0	0
Interest rate contracts | COGS | Designated as Hedging Instrument | Fair Value Hedges
Derivative Instruments, Gain (Loss) [Line Items]
Hedged items				0
Derivatives designated as hedging instruments				0
Interest rate contracts | COGS | Designated as Hedging Instrument | Cash Flow Hedging
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) reclassified from AOCI into income				0
Interest rate contracts | Interest expense | Designated as Hedging Instrument | Fair Value Hedges
Derivative Instruments, Gain (Loss) [Line Items]
Hedged items	(7)	(3)	25	6
Derivatives designated as hedging instruments	7	8	(21)	4
Interest rate contracts | Interest expense | Designated as Hedging Instrument | Cash Flow Hedging
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) reclassified from AOCI into income	$ (2)	$ (3)	$ (4)	$ (5)