Financial Instruments Schedule of Derivative Fair Values (Details) - USD ($) $ in Millions	Sep. 28, 2019	Dec. 29, 2018
Derivatives Fair Value [Line Items]
Derivative asset, fair value, gross asset	$ 986	$ 757
Derivative liability, fair value, gross liability	291	219
Foreign exchange contracts | Designated as hedging instrument
Derivatives Fair Value [Line Items]
Derivative asset, fair value, gross asset	23	51
Derivative liability, fair value, gross liability	12	26
Foreign exchange contracts | Not designated as hedging instrument
Derivatives Fair Value [Line Items]
Derivative asset, fair value, gross asset	4	5
Derivative liability, fair value, gross liability	25	42
Cross-currency contracts | Designated as hedging instrument
Derivatives Fair Value [Line Items]
Derivative asset, fair value, gross asset	348	139
Derivative liability, fair value, gross liability	98	3
Cross-currency contracts | Not designated as hedging instrument
Derivatives Fair Value [Line Items]
Derivative asset, fair value, gross asset	593	557
Derivative liability, fair value, gross liability	144	119
Commodity contracts | Not designated as hedging instrument
Derivatives Fair Value [Line Items]
Derivative asset, fair value, gross asset	18	5
Derivative liability, fair value, gross liability	12	29
Level 1
Derivatives Fair Value [Line Items]
Derivative asset, fair value, gross asset	17	5
Derivative liability, fair value, gross liability	11	27
Level 1 | Foreign exchange contracts | Designated as hedging instrument
Derivatives Fair Value [Line Items]
Derivative asset, fair value, gross asset	0	0
Derivative liability, fair value, gross liability	0	0
Level 1 | Foreign exchange contracts | Not designated as hedging instrument
Derivatives Fair Value [Line Items]
Derivative asset, fair value, gross asset	0	0
Derivative liability, fair value, gross liability	0	0
Level 1 | Cross-currency contracts | Designated as hedging instrument
Derivatives Fair Value [Line Items]
Derivative asset, fair value, gross asset	0	0
Derivative liability, fair value, gross liability	0	0
Level 1 | Cross-currency contracts | Not designated as hedging instrument
Derivatives Fair Value [Line Items]
Derivative asset, fair value, gross asset	0	0
Derivative liability, fair value, gross liability	0	0
Level 1 | Commodity contracts | Other current assets
Derivatives Fair Value [Line Items]
Derivative asset, fair value, gross asset	17
Level 1 | Commodity contracts | Not designated as hedging instrument
Derivatives Fair Value [Line Items]
Derivative asset, fair value, gross asset	17	5
Derivative liability, fair value, gross liability	11	27
Level 2
Derivatives Fair Value [Line Items]
Derivative asset, fair value, gross asset	969	752
Derivative liability, fair value, gross liability	280	192
Level 2 | Foreign exchange contracts | Other current assets
Derivatives Fair Value [Line Items]
Derivative asset, fair value, gross asset	23
Level 2 | Foreign exchange contracts | Other non-current assets
Derivatives Fair Value [Line Items]
Derivative asset, fair value, gross asset	4
Level 2 | Foreign exchange contracts | Other current liabilities
Derivatives Fair Value [Line Items]
Derivative liability, fair value, gross liability	35
Level 2 | Foreign exchange contracts | Other non-current liabilities
Derivatives Fair Value [Line Items]
Derivative liability, fair value, gross liability	2
Level 2 | Foreign exchange contracts | Designated as hedging instrument
Derivatives Fair Value [Line Items]
Derivative asset, fair value, gross asset	23	51
Derivative liability, fair value, gross liability	12	26
Level 2 | Foreign exchange contracts | Not designated as hedging instrument
Derivatives Fair Value [Line Items]
Derivative asset, fair value, gross asset	4	5
Derivative liability, fair value, gross liability	25	42
Level 2 | Cross-currency contracts | Other current assets
Derivatives Fair Value [Line Items]
Derivative asset, fair value, gross asset	593	557
Level 2 | Cross-currency contracts | Other non-current assets
Derivatives Fair Value [Line Items]
Derivative asset, fair value, gross asset	348	139
Level 2 | Cross-currency contracts | Other current liabilities
Derivatives Fair Value [Line Items]
Derivative liability, fair value, gross liability	144	119
Level 2 | Cross-currency contracts | Other non-current liabilities
Derivatives Fair Value [Line Items]
Derivative liability, fair value, gross liability	98	3
Level 2 | Cross-currency contracts | Designated as hedging instrument
Derivatives Fair Value [Line Items]
Derivative asset, fair value, gross asset	348	139
Derivative liability, fair value, gross liability	98	3
Level 2 | Cross-currency contracts | Not designated as hedging instrument
Derivatives Fair Value [Line Items]
Derivative asset, fair value, gross asset	593	557
Derivative liability, fair value, gross liability	144	119
Level 2 | Commodity contracts | Other non-current assets
Derivatives Fair Value [Line Items]
Derivative asset, fair value, gross asset	1
Level 2 | Commodity contracts | Not designated as hedging instrument
Derivatives Fair Value [Line Items]
Derivative asset, fair value, gross asset	1	0
Derivative liability, fair value, gross liability	$ 1	$ 2