Supplemental Financial Information (Schedule of Supplemental Balance Sheet Information) (Details) - USD ($)		12 Months Ended
		Dec. 31, 2016	Dec. 26, 2015	Dec. 27, 2014
Supplemental Financial Information [Abstract]
Inventory, LIFO Reserve		$ 0.05	$ 0.04
Accounts and notes receivable
Trade receivables		5,709,000,000	5,497,000,000
Other receivables		1,119,000,000	1,070,000,000
Total receivables		6,828,000,000	6,567,000,000
Analysis of valuation allowances
Allowance, beginning of year		130,000,000	137,000,000	$ 145,000,000
Net amounts charged to expense		37,000,000	43,000,000	38,000,000
Deductions	[1]	(30,000,000)	(27,000,000)	(27,000,000)
Other	[2]	(3,000,000)	(23,000,000)	(19,000,000)
Allowance, end of year		134,000,000	130,000,000	$ 137,000,000
Net receivables		6,694,000,000	6,437,000,000
Inventories (c)
Raw materials	[3]	1,315,000,000	1,312,000,000
Work-in-process	[3]	150,000,000	161,000,000
Finished goods	[3]	1,258,000,000	1,247,000,000
Inventories	[3]	2,723,000,000	2,720,000,000
Other assets
Noncurrent notes and accounts receivable		105,000,000	140,000,000
Deferred marketplace spending		140,000,000	159,000,000
Pension plans	[4]	53,000,000	60,000,000
Other		338,000,000	391,000,000
Other Assets		636,000,000	750,000,000
Accounts payable and other current liabilities
Accounts payable		6,158,000,000	5,546,000,000
Accrued marketplace spending		2,444,000,000	2,319,000,000
Accrued compensation and benefits		1,770,000,000	1,759,000,000
Dividends payable		1,097,000,000	1,041,000,000
Other current liabilities		2,774,000,000	2,842,000,000
Accounts payable and other current liabilities		$ 14,243,000,000	$ 13,507,000,000

[1] Includes accounts written off.

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

[3] Approximately 5% and 4% of the inventory cost in 2016 and 2015, respectively, 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.