Pension Benefits Components of Pension Expense (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 28, 2019	Dec. 29, 2018	Dec. 30, 2017
Pension
Defined Benefit Plan Disclosure [Line Items]
Pension (income) expense	$ 117	$ 165	$ (255)
Global plans
Defined Benefit Plan Disclosure [Line Items]
401(k) expense	39	38	41
Global plans | Pension
Defined Benefit Plan Disclosure [Line Items]
Service Cost	36	87
Interest Cost	172	165
Net periodic benefit cost	110	168	(138)
Curtailment and special termination benefits	(13)	(30)	(151)
Pension (income) expense	97	138	(289)
Defined Benefit Plan, Expected Amortization of Prior Service Cost (Credit), Next Fiscal Year	7
Global plans | COGS and SGA | Pension
Defined Benefit Plan Disclosure [Line Items]
Service Cost	36	87	96
Global plans | OIE | Pension
Defined Benefit Plan Disclosure [Line Items]
Interest Cost	172	165	164
Expected Return on Plan Assets	(340)	(361)	(371)
Amortization of Unrecognized Prior Service Cost (Credit)	7	8	9
Recognized net (gain) loss	235	269	(36)
Foreign and U.S. multiemployer defined contribution plan | Pension
Defined Benefit Plan Disclosure [Line Items]
Pension (income) expense	$ 20	$ 27	$ 34