Supplemental Financial Information (Schedule of Supplemental Balance Sheet Information) (Details) - USD ($)		12 Months Ended
		Dec. 30, 2017	Dec. 31, 2016	Dec. 26, 2015
Supplemental Financial Information [Abstract]
Inventory, LIFO Reserve		$ 0.05
Accounts and notes receivable
Trade receivables		5,956,000,000	$ 5,709,000,000
Other receivables		1,197,000,000	1,119,000,000
Total receivables		7,153,000,000	6,828,000,000
Analysis of valuation allowances
Allowance, beginning of year		134,000,000	130,000,000	$ 137,000,000
Net amounts charged to expense		26,000,000	37,000,000	43,000,000
Deductions	[1]	(35,000,000)	(30,000,000)	(27,000,000)
Other	[2]	4,000,000	(3,000,000)	(23,000,000)
Allowance, end of year		129,000,000	134,000,000	130,000,000
Net receivables		7,024,000,000	6,694,000,000
Inventories (c)
Raw materials	[3]	1,344,000,000	1,315,000,000
Work-in-process	[3]	167,000,000	150,000,000
Finished goods	[3]	1,436,000,000	1,258,000,000
Inventories	[3]	2,947,000,000	2,723,000,000
Other assets
Noncurrent notes and accounts receivable		59,000,000	105,000,000
Deferred marketplace spending		134,000,000	140,000,000
Prepaid Expense and Other Assets, Noncurrent	[4]	374,000,000	53,000,000
Other		346,000,000	338,000,000
Other Assets		913,000,000	636,000,000
Accounts payable and other current liabilities
Accounts payable		6,727,000,000	6,158,000,000
Accrued marketplace spending		2,390,000,000	2,444,000,000
Accrued compensation and benefits		1,785,000,000	1,770,000,000
Dividends payable		1,161,000,000	1,097,000,000
Other current liabilities		2,954,000,000	2,774,000,000
Accounts payable and other current liabilities		15,017,000,000	14,243,000,000
Income Taxes Paid, Net		$ 1,962,000,000	$ 1,393,000,000	$ 1,808,000,000

[1] Includes accounts written off.

[2] Includes adjustments related primarily to currency translation and other adjustments.

[3] Approximately 5% of the inventory cost in 2017 and 2016 were computed using the LIFO method. The differences between LIFO and FIFO methods of valuing these inventories were not material.

[4] See Note 7 for additional information regarding our pension plans.