Financial Instruments (Effective Portion of Pre-Tax (Gains)/Losses on Derivative Instruments) (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 30, 2017	Dec. 31, 2016
Fair Value/Non-Designated Hedges
Derivatives, Fair Value [Line Items]
Losses/(Gains) Recognized in Income Statement(a)	[1]	$ 38	$ 127
Cash Flow Hedges
Derivatives, Fair Value [Line Items]
Losses/(Gains) Recognized in Accumulated Other Comprehensive Loss		27	35
Losses/(Gains) Reclassified from Accumulated Other Comprehensive Loss into Income Statement(b)	[2]	(171)	150
Forward Exchange Contracts | Fair Value/Non-Designated Hedges
Derivatives, Fair Value [Line Items]
Losses/(Gains) Recognized in Income Statement(a)	[1]	(15)	74
Forward Exchange Contracts | Cash Flow Hedges
Derivatives, Fair Value [Line Items]
Losses/(Gains) Recognized in Accumulated Other Comprehensive Loss		62	(24)
Losses/(Gains) Reclassified from Accumulated Other Comprehensive Loss into Income Statement(b)	[2]	10	(44)
Interest Rate Contracts | Fair Value/Non-Designated Hedges
Derivatives, Fair Value [Line Items]
Losses/(Gains) Recognized in Income Statement(a)	[1]	101	105
Interest Rate Contracts | Cash Flow Hedges
Derivatives, Fair Value [Line Items]
Losses/(Gains) Recognized in Accumulated Other Comprehensive Loss		(195)	97
Losses/(Gains) Reclassified from Accumulated Other Comprehensive Loss into Income Statement(b)	[2]	(184)	187
Commodity Contracts | Fair Value/Non-Designated Hedges
Derivatives, Fair Value [Line Items]
Losses/(Gains) Recognized in Income Statement(a)	[1]	(48)	(52)
Commodity Contracts | Cash Flow Hedges
Derivatives, Fair Value [Line Items]
Losses/(Gains) Recognized in Accumulated Other Comprehensive Loss		3	1
Losses/(Gains) Reclassified from Accumulated Other Comprehensive Loss into Income Statement(b)	[2]	3	7
Net Investment Hedging [Member] | Cash Flow Hedges
Derivatives, Fair Value [Line Items]
Losses/(Gains) Recognized in Accumulated Other Comprehensive Loss		$ 157	$ (39)

[1] Foreign exchange derivative losses/gains are primarily included in selling, general and administrative expenses. Interest rate derivative losses/gains are primarily from fair value hedges and are included in interest expense. These losses/gains are substantially offset by decreases/increases in the value of the underlying debt, which are also included in interest expense. Commodity derivative losses/gains are included in either cost of sales or selling, general and administrative expenses, depending on the underlying commodity.

[2] Foreign exchange derivative losses/gains are primarily included in cost of sales. Interest rate derivative losses/gains are included in interest expense. Commodity derivative losses/gains are included in either cost of sales or selling, general and administrative expenses, depending on the underlying commodity.