Financial Instruments Derivative Impact on Statements of Income (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 28, 2020	Mar. 30, 2019
Total amounts presented in the condensed consolidated statements of income in which the following effects were recorded
Cost of products sold	$ 4,299	$ 3,948
Interest expense	310	321
Other expense/(income)	(81)	(380)
Cost of products sold
Derivatives designated as hedging instruments:
Net gains/(losses) on derivatives, reclassified to net income	(149)	29
Derivatives not designated as hedging instruments:
Net gains/(losses) on derivatives, reclassified to net income	(149)	29
Interest expense
Derivatives designated as hedging instruments:
Net gains/(losses) on derivatives, reclassified to net income	7	5
Derivatives not designated as hedging instruments:
Net gains/(losses) on derivatives, reclassified to net income	7	5
Other expense/(income)
Derivatives designated as hedging instruments:
Net gains/(losses) on derivatives, reclassified to net income	(18)	11
Derivatives not designated as hedging instruments:
Net gains/(losses) on derivatives, reclassified to net income	(18)	11
Not designated as hedging instrument | Cost of products sold | Foreign exchange contracts
Derivatives designated as hedging instruments:
Net gains/(losses) on derivatives, reclassified to net income	0	0
Derivatives not designated as hedging instruments:
Net gains/(losses) on derivatives, reclassified to net income	0	0
Not designated as hedging instrument | Cost of products sold | Cross-currency contracts
Derivatives designated as hedging instruments:
Net gains/(losses) on derivatives, reclassified to net income	0	0
Derivatives not designated as hedging instruments:
Net gains/(losses) on derivatives, reclassified to net income	0	0
Not designated as hedging instrument | Cost of products sold | Commodity contracts
Derivatives designated as hedging instruments:
Net gains/(losses) on derivatives, reclassified to net income	(150)	21
Derivatives not designated as hedging instruments:
Net gains/(losses) on derivatives, reclassified to net income	(150)	21
Not designated as hedging instrument | Interest expense | Foreign exchange contracts
Derivatives designated as hedging instruments:
Net gains/(losses) on derivatives, reclassified to net income	0	0
Derivatives not designated as hedging instruments:
Net gains/(losses) on derivatives, reclassified to net income	0	0
Not designated as hedging instrument | Interest expense | Cross-currency contracts
Derivatives designated as hedging instruments:
Net gains/(losses) on derivatives, reclassified to net income	0	0
Derivatives not designated as hedging instruments:
Net gains/(losses) on derivatives, reclassified to net income	0	0
Not designated as hedging instrument | Interest expense | Commodity contracts
Derivatives designated as hedging instruments:
Net gains/(losses) on derivatives, reclassified to net income	0	0
Derivatives not designated as hedging instruments:
Net gains/(losses) on derivatives, reclassified to net income	0	0
Not designated as hedging instrument | Other expense/(income) | Foreign exchange contracts
Derivatives designated as hedging instruments:
Net gains/(losses) on derivatives, reclassified to net income	(28)	8
Derivatives not designated as hedging instruments:
Net gains/(losses) on derivatives, reclassified to net income	(28)	8
Not designated as hedging instrument | Other expense/(income) | Cross-currency contracts
Derivatives designated as hedging instruments:
Net gains/(losses) on derivatives, reclassified to net income	0	4
Derivatives not designated as hedging instruments:
Net gains/(losses) on derivatives, reclassified to net income	0	4
Not designated as hedging instrument | Other expense/(income) | Commodity contracts
Derivatives designated as hedging instruments:
Net gains/(losses) on derivatives, reclassified to net income	0	0
Derivatives not designated as hedging instruments:
Net gains/(losses) on derivatives, reclassified to net income	0	0
Cash Flow Hedging | Designated as hedging instrument | Cost of products sold | Foreign exchange contracts
Derivatives designated as hedging instruments:
Net gains/(losses) on derivatives, reclassified to net income	1	9
Net gain/(loss) on derivatives, excluded component, reclassified to net income	0	(1)
Derivatives not designated as hedging instruments:
Net gains/(losses) on derivatives, reclassified to net income	1	9
Cash Flow Hedging | Designated as hedging instrument | Cost of products sold | Interest rate contracts
Derivatives designated as hedging instruments:
Net gains/(losses) on derivatives, reclassified to net income	0	0
Derivatives not designated as hedging instruments:
Net gains/(losses) on derivatives, reclassified to net income	0	0
Cash Flow Hedging | Designated as hedging instrument | Cost of products sold | Cross-currency contracts
Derivatives designated as hedging instruments:
Net gains/(losses) on derivatives, reclassified to net income	0	0
Net gain/(loss) on derivatives, excluded component, reclassified to net income	0	0
Derivatives not designated as hedging instruments:
Net gains/(losses) on derivatives, reclassified to net income	0	0
Cash Flow Hedging | Designated as hedging instrument | Interest expense | Foreign exchange contracts
Derivatives designated as hedging instruments:
Net gains/(losses) on derivatives, reclassified to net income	0	0
Net gain/(loss) on derivatives, excluded component, reclassified to net income	0	0
Derivatives not designated as hedging instruments:
Net gains/(losses) on derivatives, reclassified to net income	0	0
Cash Flow Hedging | Designated as hedging instrument | Interest expense | Interest rate contracts
Derivatives designated as hedging instruments:
Net gains/(losses) on derivatives, reclassified to net income	(1)	(1)
Derivatives not designated as hedging instruments:
Net gains/(losses) on derivatives, reclassified to net income	(1)	(1)
Cash Flow Hedging | Designated as hedging instrument | Interest expense | Cross-currency contracts
Derivatives designated as hedging instruments:
Net gains/(losses) on derivatives, reclassified to net income	0	0
Net gain/(loss) on derivatives, excluded component, reclassified to net income	0	0
Derivatives not designated as hedging instruments:
Net gains/(losses) on derivatives, reclassified to net income	0	0
Cash Flow Hedging | Designated as hedging instrument | Other expense/(income) | Foreign exchange contracts
Derivatives designated as hedging instruments:
Net gains/(losses) on derivatives, reclassified to net income	0	(22)
Net gain/(loss) on derivatives, excluded component, reclassified to net income	0	0
Derivatives not designated as hedging instruments:
Net gains/(losses) on derivatives, reclassified to net income	0	(22)
Cash Flow Hedging | Designated as hedging instrument | Other expense/(income) | Interest rate contracts
Derivatives designated as hedging instruments:
Net gains/(losses) on derivatives, reclassified to net income	0	0
Derivatives not designated as hedging instruments:
Net gains/(losses) on derivatives, reclassified to net income	0	0
Cash Flow Hedging | Designated as hedging instrument | Other expense/(income) | Cross-currency contracts
Derivatives designated as hedging instruments:
Net gains/(losses) on derivatives, reclassified to net income	3	20
Net gain/(loss) on derivatives, excluded component, reclassified to net income	7	7
Derivatives not designated as hedging instruments:
Net gains/(losses) on derivatives, reclassified to net income	3	20
Net Investment Hedging | Designated as hedging instrument | Cost of products sold | Foreign exchange contracts
Derivatives designated as hedging instruments:
Net gains/(losses) on derivatives, reclassified to net income	0	0
Net gain/(loss) on derivatives, excluded component, reclassified to net income	0	0
Derivatives not designated as hedging instruments:
Net gains/(losses) on derivatives, reclassified to net income	0	0
Net Investment Hedging | Designated as hedging instrument | Cost of products sold | Cross-currency contracts
Derivatives designated as hedging instruments:
Net gain/(loss) on derivatives, excluded component, reclassified to net income	0	0
Net Investment Hedging | Designated as hedging instrument | Interest expense | Foreign exchange contracts
Derivatives designated as hedging instruments:
Net gains/(losses) on derivatives, reclassified to net income	0	0
Net gain/(loss) on derivatives, excluded component, reclassified to net income	0	(1)
Derivatives not designated as hedging instruments:
Net gains/(losses) on derivatives, reclassified to net income	0	0
Net Investment Hedging | Designated as hedging instrument | Interest expense | Cross-currency contracts
Derivatives designated as hedging instruments:
Net gain/(loss) on derivatives, excluded component, reclassified to net income	8	7
Net Investment Hedging | Designated as hedging instrument | Other expense/(income) | Foreign exchange contracts
Derivatives designated as hedging instruments:
Net gains/(losses) on derivatives, reclassified to net income	0	(6)
Net gain/(loss) on derivatives, excluded component, reclassified to net income	0	0
Derivatives not designated as hedging instruments:
Net gains/(losses) on derivatives, reclassified to net income	0	(6)
Net Investment Hedging | Designated as hedging instrument | Other expense/(income) | Cross-currency contracts
Derivatives designated as hedging instruments:
Net gain/(loss) on derivatives, excluded component, reclassified to net income	$ 0	$ 0