Financial Instruments - Balance Sheet Grouping - Footnotes (Detail) - USD ($) $ in Millions		Jul. 03, 2016	Dec. 31, 2015
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Selected financial assets		$ 33,762	$ 38,157
Selected financial liabilities		45,983	40,608
Other Current Assets [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Selected financial assets	[1]	304	587
Other Current Assets [Member] | Interest Rate Swaps [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Selected financial assets		58	2
Other Current Assets [Member] | Foreign Currency Swap [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Selected financial assets		71	46
Other Current Assets [Member] | Foreign Currency Forward-Exchange Contracts [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Selected financial assets		175	538
Other Noncurrent Assets [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Selected financial assets	[2]	1,954	944
Other Noncurrent Assets [Member] | Interest Rate Swaps [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Selected financial assets		1,900	835
Other Noncurrent Assets [Member] | Foreign Currency Swap [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Selected financial assets		21	89
Other Noncurrent Assets [Member] | Foreign Currency Forward-Exchange Contracts [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Selected financial assets		14	20
Other Current Liabilities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Selected financial liabilities	[3]	606	645
Other Current Liabilities [Member] | Interest Rate Swaps [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Selected financial liabilities		3	5
Other Current Liabilities [Member] | Foreign Currency Swap [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Selected financial liabilities		265	560
Other Current Liabilities [Member] | Foreign Currency Forward-Exchange Contracts [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Selected financial liabilities		338	80
Other Noncurrent Liabilities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Selected financial liabilities	[4]	1,196	1,064
Other Noncurrent Liabilities [Member] | Interest Rate Swaps [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Selected financial liabilities		1	134
Other Noncurrent Liabilities [Member] | Foreign Currency Swap [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Selected financial liabilities		1,200	928
Other Noncurrent Liabilities [Member] | Foreign Currency Forward-Exchange Contracts [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Selected financial liabilities		$ 28	$ 1

[1] As of July 3, 2016, derivative instruments at fair value include interest rate swaps ($58 million), foreign currency swaps ($71 million) and foreign currency forward-exchange contracts ($175 million) and, as of December 31, 2015, include interest rate swaps ($2 million), foreign currency swaps ($46 million) and foreign currency forward-exchange contracts ($538 million).

[2] As of July 3, 2016, derivative instruments at fair value include interest rate swaps ($1.9 billion), foreign currency swaps ($21 million) and foreign currency forward-exchange contracts ($14 million) and, as of December 31, 2015, include interest rate swaps ($835 million), foreign currency swaps ($89 million) and foreign currency forward-exchange contracts ($20 million).

[3] As of July 3, 2016, derivative instruments at fair value include interest rate swaps ($3 million), foreign currency swaps ($265 million) and foreign currency forward-exchange contracts ($338 million) and, as of December 31, 2015, include interest rate swaps ($5 million), foreign currency swaps ($560 million) and foreign currency forward-exchange contracts ($80 million).

[4] As of July 3, 2016, derivative instruments at fair value include interest rate swaps ($1 million), foreign currency swaps ($1.2 billion) and foreign currency forward-exchange contracts ($28 million) and, as of December 31, 2015, include interest rate swaps ($134 million), foreign currency swaps ($928 million) and foreign currency forward-exchange contracts ($1 million).