Restatement of Previously Issued Condensed Consolidated Financial Statements Additional Information (Details) - USD ($) $ in Millions	3 Months Ended				9 Months Ended		45 Months Ended	48 Months Ended
	Sep. 28, 2019	Sep. 29, 2018	Jun. 30, 2018	Mar. 31, 2018	Sep. 28, 2019	Sep. 29, 2018	Sep. 29, 2018	Dec. 29, 2018
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Cost of products sold	$ 4,129	$ 4,289			$ 12,401	$ 12,672
Procurement Investigation Impact, Amount of Understatements Identified
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Cost of products sold								$ 208
Procurement Investigation Impact, Amount of Understatements Identified | Restatement Impacts
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Cost of products sold		13	$ 13	$ (4)		22	$ 175
Restatement | Restatement Impacts
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Cost of products sold		$ 18				$ 21