Derivative Financial Instruments Summary of Derivative Instruments (Gain) Loss (Details) - Foreign currency forward contracts - Designated as Hedging Instrument - Cash Flow Hedging - USD ($) $ in Millions	3 Months Ended
	Apr. 02, 2016	Apr. 04, 2015
Derivative Instruments, (Gain) Loss [Line Items]
Pre-tax (gain) loss recognized in other comprehensive income on effective portion of derivative	$ 39	$ (34)
Cost of sales
Derivative Instruments, (Gain) Loss [Line Items]
Pre-tax (Gain) Loss Recognized in Earnings on Effective Portion of Derivative as a Result of Reclassification from Accumulated Other Comprehensive Income	(6)	0
Ineffective Portion of (Gain) Loss on Derivative and Excluded from Effectiveness Testing Recognized in Earnings	$ 0	$ 0