Financial Instruments - Balance Sheet Grouping (Detail) - USD ($) $ in Millions		Oct. 01, 2017	Dec. 31, 2016
Assets
Selected financial assets		$ 22,815	$ 24,175
Liabilities
Selected financial liabilities		45,124	43,750
Cash and Cash Equivalents [Member]
Assets
Selected financial assets		526	547
Short-term Investments [Member]
Assets
Selected financial assets		14,146	15,255
Other Current Assets [Member]
Assets
Selected financial assets	[1]	288	567
Long-term Investments [Member]
Assets
Selected financial assets		7,311	7,116
Other Noncurrent Assets [Member]
Assets
Selected financial assets	[2]	543	689
Short-Term Borrowings, Including Current Portion of Long-Term Debt [Member]
Liabilities
Selected financial liabilities		9,448	10,688
Other Current Liabilities [Member]
Liabilities
Selected financial liabilities	[3]	277	443
Long-term debt [Member]
Liabilities
Selected financial liabilities		34,503	31,398
Other Noncurrent Liabilities [Member]
Liabilities
Selected financial liabilities	[4]	$ 896	$ 1,222

[1] As of October 1, 2017, derivative instruments at fair value include interest rate swaps ($97 million), foreign currency swaps ($86 million) and foreign currency forward-exchange contracts ($105 million) and, as of December 31, 2016, include interest rate swaps ($26 million), foreign currency swaps ($43 million) and foreign currency forward-exchange contracts ($497 million).

[2] As of October 1, 2017, derivative instruments at fair value include interest rate swaps ($532 million), foreign currency swaps ($6 million) and foreign currency forward-exchange contracts ($5 million) and, as of December 31, 2016, include interest rate swaps ($599 million), foreign currency swaps ($36 million) and foreign currency forward-exchange contracts ($54 million).

[3] As of October 1, 2017, derivative instruments at fair value include foreign currency forward-exchange contracts ($276 million) and interest rate swaps ($1 million) and, as of December 31, 2016, include interest rate swaps ($1 million), foreign currency swaps ($300 million) and foreign currency forward-exchange contracts ($143 million).

[4] As of October 1, 2017, derivative instruments at fair value include interest rate swaps ($153 million), foreign currency swaps ($710 million) and foreign currency forward-exchange contracts ($33 million) and, as of December 31, 2016, include interest rate swaps ($147 million) and foreign currency swaps ($1.1 billion).