Financial Instruments by Balance Sheet Grouping (Detail) - USD ($) $ in Millions		Jun. 28, 2015	Dec. 31, 2014
Assets
Selected financial assets		$ 47,244	$ 53,627
Liabilities
Selected financial liabilities		37,095	37,371
Cash and Cash Equivalents [Member]
Assets
Selected financial assets		1,412	1,389
Short-term Investments [Member]
Assets
Selected financial assets		26,586	32,779
Long-term Investments [Member]
Assets
Selected financial assets		17,650	17,518
Other Current Assets [Member]
Assets
Selected financial assets	[1]	831	1,059
Other Noncurrent Assets [Member]
Assets
Selected financial assets	[2]	765	881
Short-Term Borrowings, Including Current Portion of Long-Term Debt [Member]
Liabilities
Selected financial liabilities		8,394	5,141
Other Current Liabilities [Member]
Liabilities
Selected financial liabilities	[3]	858	93
Long-term Debt [Member]
Liabilities
Selected financial liabilities		26,729	31,541
Other Noncurrent Liabilities [Member]
Liabilities
Selected financial liabilities	[4]	$ 1,114	$ 596

[1] As of June 28, 2015, derivative instruments at fair value include interest rate swaps ($16 million), foreign currency swaps ($520 million) and foreign currency forward-exchange contracts ($294 million) and, as of December 31, 2014, include interest rate swaps ($34 million), foreign currency swaps ($494 million) and foreign currency forward-exchange contracts ($531 million).

[2] As of June 28, 2015, derivative instruments at fair value include interest rate swaps ($652 million), foreign currency swaps ($91 million) and foreign currency forward-exchange contracts ($23 million) and, as of December 31, 2014, include interest rate swaps ($767 million), foreign currency swaps ($99 million) and foreign currency forward-exchange contracts ($15 million).

[3] As of June 28, 2015, derivative instruments at fair value include interest rate swaps ($4 million), foreign currency swaps ($589 million) and foreign currency forward-exchange contracts ($265 million) and, as of December 31, 2014, include interest rate swaps ($1 million), foreign currency swaps ($13 million) and foreign currency forward-exchange contracts ($78 million).

[4] As of June 28, 2015, derivative instruments at fair value include interest rate swaps ($376 million), foreign currency swaps ($737 million) and foreign currency forward-exchange contracts ($1 million) and, as of December 31, 2014, include interest rate swaps ($16 million) and foreign currency swaps ($581 million).