Financial Instruments - Balance Sheet Grouping - Footnotes (Detail) - USD ($) $ in Millions		Oct. 02, 2016	Dec. 31, 2015
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Selected financial assets		$ 24,613	$ 38,157
Selected financial liabilities		45,926	40,608
Other Current Assets [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Selected financial assets	[1]	293	587
Other Current Assets [Member] | Interest Rate Swaps [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Selected financial assets		49	2
Other Current Assets [Member] | Foreign Currency Swap [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Selected financial assets		67	46
Other Current Assets [Member] | Foreign Currency Forward-Exchange Contracts [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Selected financial assets		177	538
Other Noncurrent Assets [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Selected financial assets	[2]	1,907	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		23	89
Other Noncurrent Assets [Member] | Foreign Currency Forward-Exchange Contracts [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Selected financial assets		9	20
Other Current Liabilities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Selected financial liabilities	[3]	805	645
Other Current Liabilities [Member] | Interest Rate Swaps [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Selected financial liabilities		1	5
Other Current Liabilities [Member] | Foreign Currency Swap [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Selected financial liabilities		320	560
Other Current Liabilities [Member] | Foreign Currency Forward-Exchange Contracts [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Selected financial liabilities		483	80
Other Noncurrent Liabilities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Selected financial liabilities	[4]	1,050	1,064
Other Noncurrent Liabilities [Member] | Interest Rate Swaps [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Selected financial liabilities		2	134
Other Noncurrent Liabilities [Member] | Foreign Currency Swap [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Selected financial liabilities		1,000	928
Other Noncurrent Liabilities [Member] | Foreign Currency Forward-Exchange Contracts [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Selected financial liabilities		$ 20	$ 1

[1] As of October 2, 2016, derivative instruments at fair value include interest rate swaps ($49 million), foreign currency swaps ($67 million) and foreign currency forward-exchange contracts ($177 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 October 2, 2016, derivative instruments at fair value include interest rate swaps ($1.9 billion), foreign currency swaps ($23 million) and foreign currency forward-exchange contracts ($9 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 October 2, 2016, derivative instruments at fair value include interest rate swaps ($1 million), foreign currency swaps ($320 million) and foreign currency forward-exchange contracts ($483 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 October 2, 2016, derivative instruments at fair value include interest rate swaps ($2 million), foreign currency swaps ($1.0 billion) and foreign currency forward-exchange contracts ($20 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).