Fair Values of Financial Assets and Liabilities (Detail) - USD ($) $ in Millions		3 Months Ended
		Mar. 19, 2016	Mar. 21, 2015	Dec. 26, 2015
Derivatives, Fair Value [Line Items]
Short-term Investments		$ 4,020		$ 2,913
Prepaid forward contracts		27		27
Deferred compensation		467		474
Derivatives not designated as hedging instruments:
Total derivatives at fair value		295		269
Total Financial Assets at fair value		8,578		7,847
Derivatives not designated as hedging instruments:
Total derivatives at fair value		502		543
Total Financial Liabilities at fair Value		969		1,017
Fair Value/Non-designated Hedges
Derivatives, Fair Value [Line Items]
Gain (Loss) on Derivative Instruments, Net, Pretax		32	$ (23)
Cash Flow Hedging [Member]
Derivatives, Fair Value [Line Items]
Derivative Instruments, Gain (Loss) Recognized in Other Comprehensive Income (Loss), Effective Portion, Net		0	(155)
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net		21	(179)
Derivatives Designated As Fair Value Hedging Instruments Assets
Derivatives designated as fair value hedging instruments:
Interest rate derivatives		185		129
Derivatives Designated As Hedging Instruments Assets
Derivatives designated as cash flow hedging instruments:
Foreign exchange contracts		38		76
Interest rate derivatives		0		0
Commodity contracts		0		0
Derivatives designated as hedging instruments, Assets, Total		38		76
Derivatives Not Designated As Hedging Instruments Assets
Derivatives not designated as hedging instruments:
Foreign exchange contracts		3		8
Interest rate derivatives		45		44
Commodity contracts		24		12
Derivatives not designated as hedging instruments, Assets, Total		72		64
Derivatives Designated As Fair Value Hedging Instruments Liabilities
Derivatives designated as fair value hedging instruments:
Interest rate derivatives		0		12
Derivatives Designated As Hedging Instruments Liabilities
Derivatives designated as cash flow hedging instruments:
Foreign exchange contracts		14		6
Interest rate derivatives		295		311
Commodity contracts		4		7
Derivatives designated as hedging instruments, Liabilities, Total		313		324
Derivatives Not Designated As Hedging Instruments Liabilities
Derivatives not designated as hedging instruments:
Foreign exchange contracts		29		10
Interest rate derivatives		55		56
Commodity contracts		105		141
Derivatives not designated as hedging instruments, Liabilities, Total		189		207
Foreign Exchange Forward [Member] | Fair Value/Non-designated Hedges
Derivatives, Fair Value [Line Items]
Gain (Loss) on Derivative Instruments, Net, Pretax	[1]	(33)	8
Foreign Exchange Forward [Member] | Cash Flow Hedging [Member]
Derivatives, Fair Value [Line Items]
Derivative Instruments, Gain (Loss) Recognized in Other Comprehensive Income (Loss), Effective Portion, Net		(16)	41
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net	[2]	21	22
Interest Rate Contract [Member] | Fair Value/Non-designated Hedges
Derivatives, Fair Value [Line Items]
Gain (Loss) on Derivative Instruments, Net, Pretax	[1]	69	23
Interest Rate Contract [Member] | Cash Flow Hedging [Member]
Derivatives, Fair Value [Line Items]
Derivative Instruments, Gain (Loss) Recognized in Other Comprehensive Income (Loss), Effective Portion, Net		16	(194)
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net	[2]	3	(193)
Commodity contracts | Fair Value/Non-designated Hedges
Derivatives, Fair Value [Line Items]
Gain (Loss) on Derivative Instruments, Net, Pretax	[1]	(4)	(54)
Commodity contracts | Cash Flow Hedging [Member]
Derivatives, Fair Value [Line Items]
Derivative Instruments, Gain (Loss) Recognized in Other Comprehensive Income (Loss), Effective Portion, Net			(2)
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net	[2]	(3)	$ (8)
Liability [Member]
Derivatives, Fair Value [Line Items]
Available-for-sale securities		0		0
Assets [Member]
Derivatives, Fair Value [Line Items]
Available-for-sale securities		7,958		7,231
Assets [Member]
Derivatives, Fair Value [Line Items]
Available-for-sale securities		113		127
Liability [Member]
Derivatives, Fair Value [Line Items]
Available-for-sale securities		0		0
Liability [Member]
Derivatives, Fair Value [Line Items]
Available-for-sale securities		0		0
Assets [Member]
Derivatives, Fair Value [Line Items]
Available-for-sale securities		8,071		7,358
Cash and Cash Equivalents [Member]
Derivatives, Fair Value [Line Items]
Available-for-sale securities		4,200		4,500
Short-term Investments [Member]
Derivatives, Fair Value [Line Items]
Available-for-sale securities		3,800		2,700
Liability [Member]
Derivatives, Fair Value [Line Items]
Short-term Investments		0		0
Assets [Member]
Derivatives, Fair Value [Line Items]
Short-term Investments		185		193
Liability [Member]
Derivatives, Fair Value [Line Items]
Prepaid forward contracts		0		0
Assets [Member]
Derivatives, Fair Value [Line Items]
Deferred compensation		$ 0		$ 0

[1] Foreign exchange derivative gains/losses are primarily included in selling, general and administrative expenses. Interest rate derivative gains/losses are primarily from fair value hedges and are included in interest expense. These gains/losses are substantially offset by increases/decreases in the value of the underlying debt, which are also included in interest expense. Commodity derivative gains/losses are included in either cost of sales or selling, general and administrative expenses, depending on the underlying commodity.

[2] Foreign exchange derivative gains/losses are primarily included in cost of sales. Interest rate derivative gains/losses are included in interest expense. Commodity derivative gains/losses are included in either cost of sales or selling, general and administrative expenses, depending on the underlying commodity.