Fair Values of Financial Assets and Liabilities (Detail) (USD $) In Millions, unless otherwise specified	Mar. 21, 2015		Dec. 27, 2014
Derivatives, Fair Value [Line Items]
Short-term Investments	$ 2,085		$ 2,592
Prepaid forward contracts	25	[1],[2]	26	[1],[2]
Deferred Compensation Assets, Current and Noncurrent	0	[1],[3]	0	[1],[3]
Derivatives not designated as hedging instruments:
Total derivatives at fair value	339	[1],[4]	307	[1],[4]
Total Financial Assets at fair value	4,807	[1]	3,821	[1]
Derivatives not designated as hedging instruments:
Total derivatives at fair value	575	[1],[4]	393	[1],[4]
Total Financial Liabilities at fair Value	1,078	[1]	897	[1]
Derivatives Designated As Fair Value Hedging Instruments Assets
Derivatives designated as fair value hedging instruments:
Interest rate derivatives	162	[1],[5]	140	[1],[5]
Derivatives Designated As Hedging Instruments Assets
Derivatives designated as cash flow hedging instruments:
Foreign exchange contracts	95	[1],[6]	76	[1],[6]
Interest rate derivatives			1	[1],[6]
Commodity contracts	1	[1],[7]	3	[1],[7]
Derivatives designated as hedging instruments, Assets, Total	96	[1]	80	[1]
Derivatives Not Designated As Hedging Instruments Assets
Derivatives not designated as hedging instruments:
Foreign exchange contracts	8	[1],[6]	12	[1],[6]
Interest rate derivatives	62	[1],[5]	57	[1],[5]
Commodity contracts	11	[1],[7]	18	[1],[7]
Derivatives not designated as hedging instruments, Assets, Total	81	[1]	87	[1]
Derivatives Designated As Fair Value Hedging Instruments Liabilities
Derivatives designated as fair value hedging instruments:
Interest rate derivatives	0	[1],[5]	0	[1],[5]
Derivatives Designated As Hedging Instruments Liabilities
Derivatives designated as cash flow hedging instruments:
Foreign exchange contracts	24	[1],[6]	12	[1],[6]
Interest rate derivatives	310	[1],[6]	117	[1],[6]
Commodity contracts	7	[1],[7]	10	[1],[7]
Derivatives designated as hedging instruments, Liabilities, Total	341	[1]	139	[1]
Derivatives Not Designated As Hedging Instruments Liabilities
Derivatives not designated as hedging instruments:
Foreign exchange contracts	4	[1],[6]	13	[1],[6]
Interest rate derivatives	78	[1],[5]	75	[1],[5]
Commodity contracts	152	[1],[7]	166	[1],[7]
Derivatives not designated as hedging instruments, Liabilities, Total	234	[1]	254	[1]
Liability [Member]
Derivatives, Fair Value [Line Items]
Available-for-sale securities	0	[1]	0	[1]
Trading Securities	0	[1],[8]	0	[1],[8]
Prepaid Forward Derivative Asset Fair Value	0	[1],[2]	0	[1],[2]
Deferred compensation	503	[1],[3]	504	[1],[3]
Assets [Member]
Derivatives, Fair Value [Line Items]
Available-for-sale securities	4,243	[1]	3,291	[1]
Short-term Investments	200	[1],[8]	197	[1],[8]
Liability [Member] | Liability [Member]
Derivatives, Fair Value [Line Items]
Available-for-sale securities	0	[1],[9]	0	[1],[9]
Assets [Member] | Assets [Member]
Derivatives, Fair Value [Line Items]
Available-for-sale securities	4,104	[1],[9]	3,167	[1],[9]
Assets [Member] | Assets [Member]
Derivatives, Fair Value [Line Items]
Available-for-sale securities	139	[1],[10]	124	[1],[10]
Liability [Member] | Liability [Member]
Derivatives, Fair Value [Line Items]
Available-for-sale securities	0	[1],[10]	0	[1],[10]
Cash and Cash Equivalents [Member]
Derivatives, Fair Value [Line Items]
Available-for-sale securities	2,200		800
Short-term Investments [Member]
Derivatives, Fair Value [Line Items]
Available-for-sale securities	$ 1,900		$ 2,400

[1] Unless otherwise noted, financial assets are classified on our Condensed Consolidated Balance Sheet within prepaid expenses and other current assets and other assets. Financial liabilities are classified on our Condensed Consolidated Balance Sheet within accounts payable and other current liabilities and other liabilities. Unless specifically indicated, all financial assets and liabilities are categorized as Level 2 assets or liabilities.

[2] Based primarily on the price of our common stock.

[3] Based on the fair value of investments corresponding to employees’ investment elections.

[4] Unless otherwise noted, derivative assets and liabilities are presented on a gross basis on our Condensed Consolidated Balance Sheet. Amounts subject to enforceable master netting arrangements or similar agreements which are not offset on the Condensed Consolidated Balance Sheet as of March 21, 2015 and December 27, 2014 were immaterial. Collateral received against any of our asset positions was immaterial.

[5] Based on LIBOR forward rates. As of March 21, 2015 and December 27, 2014, amounts related to non-designated instruments are presented as a net liability on our Condensed Consolidated Balance Sheet.

[6] Based on recently reported market transactions of spot and forward rates.

[7] Based on recently reported market transactions, primarily swap arrangements.

[8] Based on the price of index funds. Categorized as a Level 1 asset. These investments are classified as short-term investments and are used to manage a portion of market risk arising from our deferred compensation liability.

[9] Based on quoted broker prices or other significant inputs derived from or corroborated by observable market data. As of March 21, 2015, $2.2 billion and $1.9 billion of debt securities were classified as cash equivalents and short-term investments, respectively. As of December 27, 2014, $0.8 billion and $2.4 billion of debt securities were classified as cash equivalents and short-term investments, respectively. All of the Company’s available-for-sale debt securities have contractual maturities of one year or less.

[10] Based on the price of common stock. Categorized as a Level 1 asset. These equity securities are classified as investments in noncontrolled affiliates.