Pension, Retiree Medical and Savings Plans (Categorized Plan Assets Measured at Fair Value) (Details) (USD $) In Millions, unless otherwise specified																																																																																																																																		12 Months Ended																																																																																																																																12 Months Ended
	Dec. 28, 2013 U.S. Plan Assets		Dec. 29, 2012 U.S. Plan Assets		Dec. 28, 2013 International Plan Assets	Dec. 29, 2012 International Plan Assets	Dec. 28, 2013 Retiree Medical Plan	Dec. 29, 2012 Retiree Medical Plan	Dec. 31, 2011 Retiree Medical Plan	Dec. 28, 2013 U.S. Common Stock U.S. Plan Assets		Dec. 29, 2012 U.S. Common Stock U.S. Plan Assets		Dec. 28, 2013 U.S. Common Stock International Plan Assets		Dec. 29, 2012 U.S. Common Stock International Plan Assets		Dec. 28, 2013 U.S. Common Stock Level 1 U.S. Plan Assets		Dec. 28, 2013 U.S. Common Stock Level 1 International Plan Assets		Dec. 28, 2013 U.S. Common Stock Level 2 U.S. Plan Assets		Dec. 28, 2013 U.S. Common Stock Level 2 International Plan Assets		Dec. 28, 2013 U.S. Common Stock Level 3 U.S. Plan Assets		Dec. 28, 2013 U.S. Common Stock Level 3 International Plan Assets		Dec. 28, 2013 U.S. Commingled Funds U.S. Plan Assets		Dec. 29, 2012 U.S. Commingled Funds U.S. Plan Assets		Dec. 28, 2013 U.S. Commingled Funds International Plan Assets		Dec. 29, 2012 U.S. Commingled Funds International Plan Assets		Dec. 28, 2013 U.S. Commingled Funds Level 1 U.S. Plan Assets		Dec. 28, 2013 U.S. Commingled Funds Level 1 International Plan Assets		Dec. 28, 2013 U.S. Commingled Funds Level 2 U.S. Plan Assets		Dec. 28, 2013 U.S. Commingled Funds Level 2 International Plan Assets		Dec. 28, 2013 U.S. Commingled Funds Level 3 U.S. Plan Assets		Dec. 28, 2013 U.S. Commingled Funds Level 3 International Plan Assets		Dec. 28, 2013 International Common Stock [Member] U.S. Plan Assets		Dec. 29, 2012 International Common Stock [Member] U.S. Plan Assets		Dec. 28, 2013 International Common Stock [Member] International Plan Assets		Dec. 29, 2012 International Common Stock [Member] International Plan Assets		Dec. 28, 2013 International Common Stock [Member] Level 1 U.S. Plan Assets		Dec. 28, 2013 International Common Stock [Member] Level 1 International Plan Assets		Dec. 28, 2013 International Common Stock [Member] Level 2 U.S. Plan Assets		Dec. 28, 2013 International Common Stock [Member] Level 2 International Plan Assets		Dec. 28, 2013 International Common Stock [Member] Level 3 U.S. Plan Assets		Dec. 28, 2013 International Common Stock [Member] Level 3 International Plan Assets		Dec. 28, 2013 International Commingled Fund U.S. Plan Assets		Dec. 29, 2012 International Commingled Fund U.S. Plan Assets		Dec. 28, 2013 International Commingled Fund International Plan Assets		Dec. 29, 2012 International Commingled Fund International Plan Assets		Dec. 28, 2013 International Commingled Fund Level 1 U.S. Plan Assets		Dec. 28, 2013 International Commingled Fund Level 1 International Plan Assets		Dec. 28, 2013 International Commingled Fund Level 2 U.S. Plan Assets		Dec. 28, 2013 International Commingled Fund Level 2 International Plan Assets		Dec. 28, 2013 International Commingled Fund Level 3 U.S. Plan Assets		Dec. 28, 2013 International Commingled Fund Level 3 International Plan Assets		Dec. 28, 2013 Preferred Stock U.S. Plan Assets		Dec. 29, 2012 Preferred Stock U.S. Plan Assets		Dec. 28, 2013 Preferred Stock International Plan Assets		Dec. 29, 2012 Preferred Stock International Plan Assets		Dec. 28, 2013 Preferred Stock Level 1 U.S. Plan Assets		Dec. 28, 2013 Preferred Stock Level 1 International Plan Assets		Dec. 28, 2013 Preferred Stock Level 2 U.S. Plan Assets		Dec. 28, 2013 Preferred Stock Level 2 International Plan Assets		Dec. 28, 2013 Preferred Stock Level 3 U.S. Plan Assets		Dec. 28, 2013 Preferred Stock Level 3 International Plan Assets		Dec. 28, 2013 Government Securities U.S. Plan Assets		Dec. 29, 2012 Government Securities U.S. Plan Assets		Dec. 28, 2013 Government Securities International Plan Assets		Dec. 29, 2012 Government Securities International Plan Assets		Dec. 28, 2013 Government Securities Level 1 U.S. Plan Assets		Dec. 28, 2013 Government Securities Level 1 International Plan Assets		Dec. 28, 2013 Government Securities Level 2 U.S. Plan Assets		Dec. 28, 2013 Government Securities Level 2 International Plan Assets		Dec. 28, 2013 Government Securities Level 3 U.S. Plan Assets		Dec. 28, 2013 Government Securities Level 3 International Plan Assets		Dec. 28, 2013 Corporate Bonds	Dec. 29, 2012 Corporate Bonds	Dec. 28, 2013 Corporate Bonds U.S. Plan Assets		Dec. 29, 2012 Corporate Bonds U.S. Plan Assets		Dec. 28, 2013 Corporate Bonds International Plan Assets		Dec. 29, 2012 Corporate Bonds International Plan Assets		Dec. 28, 2013 Corporate Bonds Level 1 U.S. Plan Assets		Dec. 28, 2013 Corporate Bonds Level 1 International Plan Assets		Dec. 28, 2013 Corporate Bonds Level 2 U.S. Plan Assets		Dec. 28, 2013 Corporate Bonds Level 2 International Plan Assets		Dec. 28, 2013 Corporate Bonds Level 3 U.S. Plan Assets		Dec. 28, 2013 Corporate Bonds Level 3 International Plan Assets		Dec. 28, 2013 Mortgage-Backed Securities U.S. Plan Assets		Dec. 29, 2012 Mortgage-Backed Securities U.S. Plan Assets		Dec. 28, 2013 Mortgage-Backed Securities Level 1 U.S. Plan Assets		Dec. 28, 2013 Mortgage-Backed Securities Level 2 U.S. Plan Assets		Dec. 28, 2013 Mortgage-Backed Securities Level 3 U.S. Plan Assets		Dec. 28, 2013 Contracts With Insurance Companies U.S. Plan Assets		Dec. 29, 2012 Contracts With Insurance Companies U.S. Plan Assets		Dec. 28, 2013 Contracts With Insurance Companies International Plan Assets		Dec. 29, 2012 Contracts With Insurance Companies International Plan Assets		Dec. 28, 2013 Contracts With Insurance Companies Level 1 U.S. Plan Assets		Dec. 28, 2013 Contracts With Insurance Companies Level 1 International Plan Assets		Dec. 28, 2013 Contracts With Insurance Companies Level 2 U.S. Plan Assets		Dec. 28, 2013 Contracts With Insurance Companies Level 2 International Plan Assets		Dec. 28, 2013 Contracts With Insurance Companies Level 3 U.S. Plan Assets		Dec. 28, 2013 Contracts With Insurance Companies Level 3 International Plan Assets		Dec. 28, 2013 Real Estate U.S. Plan Assets		Dec. 29, 2012 Real Estate U.S. Plan Assets		Dec. 28, 2013 Real Estate Level 1 U.S. Plan Assets		Dec. 28, 2013 Real Estate Level 2 U.S. Plan Assets		Dec. 28, 2013 Real Estate Level 3 U.S. Plan Assets		Dec. 28, 2013 Cash And Cash Equivalents U.S. Plan Assets		Dec. 29, 2012 Cash And Cash Equivalents U.S. Plan Assets		Dec. 28, 2013 Cash And Cash Equivalents International Plan Assets	Dec. 29, 2012 Cash And Cash Equivalents International Plan Assets	Dec. 28, 2013 Cash And Cash Equivalents Level 1 U.S. Plan Assets		Dec. 28, 2013 Cash And Cash Equivalents Level 1 International Plan Assets	Dec. 28, 2013 Cash And Cash Equivalents Level 2 U.S. Plan Assets		Dec. 28, 2013 Cash And Cash Equivalents Level 2 International Plan Assets	Dec. 28, 2013 Cash And Cash Equivalents Level 3 U.S. Plan Assets		Dec. 28, 2013 Cash And Cash Equivalents Level 3 International Plan Assets	Dec. 28, 2013 Sub-Total U.S. Plan Assets U.S. Plan Assets		Dec. 29, 2012 Sub-Total U.S. Plan Assets U.S. Plan Assets		Dec. 28, 2013 Sub-Total U.S. Plan Assets Level 1 U.S. Plan Assets		Dec. 28, 2013 Sub-Total U.S. Plan Assets Level 2 U.S. Plan Assets		Dec. 28, 2013 Sub-Total U.S. Plan Assets Level 3 U.S. Plan Assets		Dec. 28, 2013 Fixed Income Commingled Funds International Plan Assets		Dec. 29, 2012 Fixed Income Commingled Funds International Plan Assets		Dec. 28, 2013 Fixed Income Commingled Funds Level 1 International Plan Assets		Dec. 28, 2013 Fixed Income Commingled Funds Level 2 International Plan Assets		Dec. 28, 2013 Fixed Income Commingled Funds Level 3 International Plan Assets		Dec. 28, 2013 Currency Commingled Funds International Plan Assets		Dec. 29, 2012 Currency Commingled Funds International Plan Assets		Dec. 28, 2013 Currency Commingled Funds Level 1 International Plan Assets		Dec. 28, 2013 Currency Commingled Funds Level 2 International Plan Assets		Dec. 28, 2013 Currency Commingled Funds Level 3 International Plan Assets		Dec. 28, 2013 Other Commingled Fund International Plan Assets		Dec. 29, 2012 Other Commingled Fund International Plan Assets		Dec. 28, 2013 Other Commingled Fund Level 1 International Plan Assets		Dec. 28, 2013 Other Commingled Fund Level 2 International Plan Assets		Dec. 28, 2013 Other Commingled Fund Level 3 International Plan Assets		Dec. 28, 2013 Sub-Total International Plan Assets International Plan Assets	Dec. 29, 2012 Sub-Total International Plan Assets International Plan Assets	Dec. 28, 2013 Sub-Total International Plan Assets Level 1 International Plan Assets	Dec. 28, 2013 Sub-Total International Plan Assets Level 2 International Plan Assets	Dec. 28, 2013 Sub-Total International Plan Assets Level 3 International Plan Assets	Dec. 28, 2013 Dividends And Interest Receivable U.S. Plan Assets		Dec. 29, 2012 Dividends And Interest Receivable U.S. Plan Assets		Dec. 28, 2013 Dividends And Interest Receivable International Plan Assets	Dec. 29, 2012 Dividends And Interest Receivable International Plan Assets	Dec. 28, 2013 Large-Cap Fund(s) In U.S. Commingled Funds
Defined Benefit Plan Disclosure [Line Items]
Representation of one fund in total U.S. plan assets																																																																																																																																		21.00%	22.00%																																																																																																																															25.00%
Defined Benefit Plan, Fair Value of Plan Assets	$ 11,868	[1]	$ 11,182	[1]	$ 2,777	$ 2,463	$ 406	$ 365	$ 190	$ 732	[1],[2]	$ 626	[1],[2]	$ 4	[2]	$ 0	[2]	$ 732	[1],[2]	$ 4	[2]	$ 0	[1],[2]	$ 0	[2]	$ 0	[1],[2]	$ 0	[2]	$ 3,334	[1],[3],[4]	$ 3,106	[1],[3],[4]	$ 334	[3]	$ 278	[3]	$ 0	[1],[3],[4]	$ 0	[3]	$ 3,334	[1],[3],[4]	$ 334	[3]	$ 0	[1],[3],[4]	$ 0	[3]	$ 1,669	[1],[2]	$ 1,597	[1],[2]	$ 176	[2]	$ 0	[2]	$ 1,669	[1],[2]	$ 176	[2]	$ 0	[1],[2]	$ 0	[2]	$ 0	[1],[2]	$ 0	[2]	$ 902	[1],[5]	$ 948	[1],[5]	$ 914	[5]	$ 863	[5]	$ 0	[1],[5]	$ 0	[5]	$ 902	[1],[5]	$ 914	[5]	$ 0	[1],[5]	$ 0	[5]	$ 18	[1],[6]	$ 20	[1],[6]	$ 1	[6]	$ 0	[6]	$ 0	[1],[6]	$ 0	[6]	$ 18	[1],[6]	$ 1	[6]	$ 0	[1],[6]	$ 0	[6]	$ 1,264	[1],[6]	$ 1,287	[1],[6]	$ 207	[6]	$ 202	[6]	$ 0	[1],[6]	$ 0	[6]	$ 1,264	[1],[6]	$ 207	[6]	$ 0	[1],[6]	$ 0	[6]			$ 2,958	[1],[6],[7]	$ 2,962	[1],[6],[7]	$ 261	[6]	$ 230	[6]	$ 0	[1],[6],[7]	$ 0	[6]	$ 2,958	[1],[6],[7]	$ 261	[6]	$ 0	[1],[6],[7]	$ 0	[6]	$ 220	[1],[6]	$ 110	[1],[6]	$ 0	[1],[6]	$ 220	[1],[6]	$ 0	[1],[6]	$ 6	[1],[8]	$ 27	[1],[8]	$ 34	[8]	$ 35	[8]	$ 0	[1],[8]	$ 0	[8]	$ 0	[1],[8]	$ 0	[8]	$ 6	[1],[8]	$ 34	[8]	$ 552	[1],[9]	$ 331	[1],[9]	$ 0	[1],[9]	$ 0	[1],[9]	$ 552	[1],[9]	$ 154	[1]	$ 117	[1]	$ 15	$ 125	$ 154	[1]	$ 15	$ 0	[1]	$ 0	$ 0	[1]	$ 0	$ 11,809	[1]	$ 11,131	[1]	$ 2,555	[1]	$ 8,696	[1]	$ 558	[1]	$ 650	[10]	$ 600	[10]	$ 0	[10]	$ 650	[10]	$ 0	[10]	$ 91	[11]	$ 64	[11]	$ 0	[11]	$ 91	[11]	$ 0	[11]	$ 83	[9]	$ 60	[9]	$ 0	[9]	$ 0	[9]	$ 83	[9]	$ 2,770	$ 2,457	$ 195	$ 2,458	$ 117	$ 59	[1]	$ 51	[1]	$ 7	$ 6

[1] 2013 and 2012 amounts include $406 million and $365 million, respectively, of retiree medical plan assets that are restricted for purposes of providing health benefits for U.S. retirees and their beneficiaries.

[2] Based on quoted market prices in active markets.

[3] Based on the fair value of the investments owned by these funds that track various U.S. large, mid-cap and small company indices.

[4] Includes one large-cap fund that represents 25% of total U.S. plan assets for both 2013 and 2012.

[5] Based on the fair value of the investments owned by these funds that track various non-U.S. equity indices.

[6] Based on quoted bid prices for comparable securities in the marketplace and broker/dealer quotes in active markets.

[7] Corporate bonds of U.S.-based companies represent 21% and 22%, respectively, of total U.S. plan assets for 2013 and 2012.

[8] Based on the fair value of the contracts as determined by the insurance companies using inputs that are not observable.

[9] Based on the appraised value of the investments owned by these funds as determined by independent third parties using inputs that are not observable.

[10] Based on the fair value of the investments owned by these funds that track various government and corporate bond indices.

[11] Based on the fair value of the investments owned by this fund that invests primarily in derivatives to hedge currency exposure.