Fair Value Measurements (Details 1) - USD ($) $ in Millions		Sep. 27, 2015	Dec. 28, 2014
Financial assets and liabilities at fair value
Derivatives designated as hedging instruments : Assets		$ 842
Derivatives designated as hedging instruments : Liabilities		657
Available-for-sale Securities	[1]	5,269
Quoted prices in active markets for identical assets and liabilities Level 1
Financial assets and liabilities at fair value
Derivatives designated as hedging instruments : Assets		0
Derivatives designated as hedging instruments : Liabilities		0
Available-for-sale Securities, Equity Securities	[2]	1,130	$ 679	[3]
Available-for-sale Securities	[1]	0
Significant other observable inputs Level 2
Financial assets and liabilities at fair value
Derivatives designated as hedging instruments : Assets		842	1,027	[3]
Derivatives designated as hedging instruments : Liabilities		657	759	[3]
Available-for-sale Securities, Equity Securities	[2]	0
Available-for-sale Securities	[1]	5,269	0	[3]
Significant unobservable inputs Level 3
Financial assets and liabilities at fair value
Derivatives designated as hedging instruments : Assets		0
Derivatives designated as hedging instruments : Liabilities		0
Available-for-sale Securities, Equity Securities	[2]	0
Available-for-sale Securities	[1]	0
Interest Rate Contract
Financial assets and liabilities at fair value
Derivatives designated as hedging instruments : Assets	[4],[5],[6]	51
Derivatives designated as hedging instruments : Liabilities	[6],[7]	185
Derivative Assets, Noncurrent		45	29
Derivative Liabilities, Noncurrent		185	8
Interest Rate Contract | Quoted prices in active markets for identical assets and liabilities Level 1
Financial assets and liabilities at fair value
Derivatives designated as hedging instruments : Assets	[4],[5],[6]	0
Derivatives designated as hedging instruments : Liabilities	[6],[7]	0
Interest Rate Contract | Significant other observable inputs Level 2
Financial assets and liabilities at fair value
Derivatives designated as hedging instruments : Assets	[4],[5],[6]	51	31	[3]
Derivatives designated as hedging instruments : Liabilities	[6],[7]	185	8	[3]
Interest Rate Contract | Significant unobservable inputs Level 3
Financial assets and liabilities at fair value
Derivatives designated as hedging instruments : Assets	[4],[5],[6]	0
Derivatives designated as hedging instruments : Liabilities	[6],[7]	0
Foreign exchange contracts
Financial assets and liabilities at fair value
Derivatives designated as hedging instruments : Assets	[4]	791
Derivatives designated as hedging instruments : Liabilities	[8]	472
Derivatives not designated as hedging instruments : Assets	[4]	56
Derivatives not designated as hedging instruments : Liabilities	[8]	39
Foreign exchange contracts | Quoted prices in active markets for identical assets and liabilities Level 1
Financial assets and liabilities at fair value
Derivatives designated as hedging instruments : Assets	[4]	0
Derivatives designated as hedging instruments : Liabilities	[8]	0
Derivatives not designated as hedging instruments : Assets	[4]	0
Derivatives not designated as hedging instruments : Liabilities	[8]	0
Foreign exchange contracts | Significant other observable inputs Level 2
Financial assets and liabilities at fair value
Derivatives designated as hedging instruments : Assets	[4]	791	996	[3]
Derivatives designated as hedging instruments : Liabilities	[8]	472	751	[3]
Derivatives not designated as hedging instruments : Assets	[4]	56	29	[3]
Derivatives not designated as hedging instruments : Liabilities	[8]	39	51	[3]
Foreign exchange contracts | Significant unobservable inputs Level 3
Financial assets and liabilities at fair value
Derivatives designated as hedging instruments : Assets	[4]	0
Derivatives designated as hedging instruments : Liabilities	[8]	0
Derivatives not designated as hedging instruments : Assets	[4]	0
Derivatives not designated as hedging instruments : Liabilities	[8]	0
Equity Securities [Member]
Financial assets and liabilities at fair value
Available-for-sale Securities, Equity Securities		531	284
Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax		648	406
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax		$ 49	$ 11

[1] Classified as current marketable securities

[2] Classified as non-current other assets. The carrying amount of the equity investments were $531 million and $284 million as of September 27, 2015 and December 28, 2014, respectively. The unrealized gains were $648 million and $406 million as of September 27, 2015 and December 28, 2014, respectively. The unrealized losses were $49 million and $11 million as of September 27, 2015 and December 28, 2014, respectively

[3] 2014 assets and liabilities are all classified as Level 2 with the exception of equity investments of $679 million, which are classified as Level 1.

[4] Classified as other current assets

[5] Includes $45 million and $29 million of non-current other assets for September 27, 2015 and December 28, 2014, respectively.

[6] Includes cross currency interest rate swaps and interest rate swaps.

[7] Includes $185 million and $8 million of non-current other liabilities for September 27, 2015 and December 28, 2014, respectively.

[8] Classified as accounts payable.