Restructuring and Cost Reduction Activities - Project K Program Costs Since Inception Narrative (Details) $ in Millions	Jun. 29, 2019 USD ($)
Restructuring Cost and Reserve [Line Items]
Restructuring and related costs since inception of program	$ 1,593
Project K [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and related costs since inception of program	1,543
Project K [Member] | Revenue
Restructuring Cost and Reserve [Line Items]
Restructuring and related costs since inception of program	6
Project K [Member] | COGS
Restructuring Cost and Reserve [Line Items]
Restructuring and related costs since inception of program	910
Project K [Member] | Selling, General and Administrative Expenses
Restructuring Cost and Reserve [Line Items]
Restructuring and related costs since inception of program	794
Project K [Member] | Other (income) expense, net
Restructuring Cost and Reserve [Line Items]
Restructuring and related costs since inception of program	$ (167)