Basis of Presentation and Significant Accounting Policies - Accrued Rebates and Other Accruals (Details) - USD ($) $ in Millions	Sep. 27, 2020	Dec. 31, 2019
Schedule Of Accrued Liabilities [Line Items]
Accrued rebates and other accruals	$ 5,591	$ 5,689
Trade accounts receivable, less allowance for doubtful accounts [Member]
Schedule Of Accrued Liabilities [Line Items]
Accrued rebates and other accruals	1,126	1,257
Other current liabilities [Member]
Schedule Of Accrued Liabilities [Line Items]
Accrued rebates	3,270	3,285
Other accruals	573	581
Other noncurrent liabilities [Member]
Schedule Of Accrued Liabilities [Line Items]
Accrued rebates and other accruals	$ 622	$ 565