Supplemental Financial Information (Schedule of Supplemental Balance Sheet Information) (Details) - USD ($)	12 Months Ended
	Dec. 28, 2019	Dec. 29, 2018	Dec. 30, 2017
Supplemental Financial Information [Abstract]
Inventory, LIFO Reserve	$ 0.07	$ 0.05
Accounts and notes receivable
Trade receivables	6,447,000,000	6,079,000,000
Other receivables	1,480,000,000	1,164,000,000
Total receivables	7,927,000,000	7,243,000,000
Analysis of valuation allowances
Allowance, beginning of year	101,000,000	129,000,000	$ 134,000,000
Net amounts charged to expense	22,000,000	16,000,000	26,000,000
Deductions	(30,000,000)	(33,000,000)	(35,000,000)
Other	12,000,000	(11,000,000)	4,000,000
Allowance, end of year	105,000,000	101,000,000	$ 129,000,000
Net receivables	7,822,000,000	7,142,000,000
Inventories (c)
Raw materials	1,395,000,000	1,312,000,000
Work-in-process	200,000,000	178,000,000
Finished goods	1,743,000,000	1,638,000,000
Inventories	3,338,000,000	3,128,000,000
Other assets
Other Assets	3,011,000,000	760,000,000
Noncurrent notes and accounts receivable	85,000,000	86,000,000
Deferred marketplace spending	147,000,000	112,000,000
Prepaid Expense and Other Assets, Noncurrent	846,000,000	269,000,000
Operating Lease, Right-of-Use Asset	1,548,000,000	0
Other	385,000,000	293,000,000
Accounts payable and other current liabilities
Accounts payable	8,013,000,000	7,213,000,000
Accrued marketplace spending	2,765,000,000	2,541,000,000
Accrued compensation and benefits	1,835,000,000	1,755,000,000
Dividends payable	1,351,000,000	1,329,000,000
Business Combination, Contingent Consideration, Liability	58,000,000	1,997,000,000
Operating Lease, Liability, Current	442,000,000	0
Other current liabilities	3,077,000,000	3,277,000,000
Accounts payable and other current liabilities	$ 17,541,000,000	$ 18,112,000,000