Financial Instruments Derivative Impact on Statements of Other Comprehensive Income (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 28, 2019	Sep. 29, 2018	Sep. 28, 2019	Sep. 29, 2018
Derivative [Line Items]
Other comprehensive income (loss), derivatives, gain (loss), before reclassification and tax	$ 138	$ (20)	$ 109	$ 141
Cash Flow Hedging | Net sales | Foreign exchange contracts
Derivative [Line Items]
Gains/(losses) recognized in other comprehensive income (loss) on cash flow hedges, before tax	0	0	(1)	0
Cash Flow Hedging | Cost of products sold | Foreign exchange contracts
Derivative [Line Items]
Gains/(losses) recognized in other comprehensive income (loss) on cash flow hedges, before tax	8	(5)	(19)	27
Amounts excluded from the effectiveness assessment of cash flow hedges, before tax	1	(2)	1	(2)
Cash Flow Hedging | Other expense/(income) | Foreign exchange contracts
Derivative [Line Items]
Gains/(losses) recognized in other comprehensive income (loss) on cash flow hedges, before tax	0	(12)	(22)	19
Amounts excluded from the effectiveness assessment of cash flow hedges, before tax	0	2	0	2
Cash Flow Hedging | Other expense/(income) | Cross-currency contracts
Derivative [Line Items]
Gains/(losses) recognized in other comprehensive income (loss) on cash flow hedges, before tax	43	0	62	0
Amounts excluded from the effectiveness assessment of cash flow hedges, before tax	7	0	21	0
Net Investment Hedging | Other expense/(income) | Foreign exchange contracts
Derivative [Line Items]
Gains/(losses) recognized in other comprehensive income (loss) on net investment hedges, before tax	5	8	18	10
Net Investment Hedging | Other expense/(income) | Cross-currency contracts
Derivative [Line Items]
Gains/(losses) recognized in other comprehensive income (loss) on net investment hedges, before tax	66	(18)	28	78
Net Investment Hedging | Interest expense | Foreign exchange contracts
Derivative [Line Items]
Amounts excluded from the effectiveness assessment of net investment hedges, before tax	0	1	(1)	1
Net Investment Hedging | Interest expense | Cross-currency contracts
Derivative [Line Items]
Amounts excluded from the effectiveness assessment of net investment hedges, before tax	$ 8	$ 6	$ 22	$ 6