Financial Instruments - Balance Sheet Grouping - Footnotes (Detail) - USD ($) $ in Millions		Apr. 02, 2017	Dec. 31, 2016
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Selected financial assets		$ 19,896	$ 24,175
Selected financial liabilities		45,775	43,750
Other Current Assets [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Selected financial assets	[1]	511	567
Other Current Assets [Member] | Interest Rate Swaps [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Selected financial assets		159	26
Other Current Assets [Member] | Foreign Currency Swap [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Selected financial assets		195	43
Other Current Assets [Member] | Foreign Currency Forward-Exchange Contracts [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Selected financial assets		156	497
Other Noncurrent Assets [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Selected financial assets	[2]	549	689
Other Noncurrent Assets [Member] | Interest Rate Swaps [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Selected financial assets		489	599
Other Noncurrent Assets [Member] | Foreign Currency Swap [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Selected financial assets		37	36
Other Noncurrent Assets [Member] | Foreign Currency Forward-Exchange Contracts [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Selected financial assets		23	54
Other Current Liabilities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Selected financial liabilities	[3]	434	443
Other Current Liabilities [Member] | Interest Rate Swaps [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Selected financial liabilities			1
Other Current Liabilities [Member] | Foreign Currency Swap [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Selected financial liabilities		296	300
Other Current Liabilities [Member] | Foreign Currency Forward-Exchange Contracts [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Selected financial liabilities		138	143
Other Noncurrent Liabilities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Selected financial liabilities	[4]	1,331	1,222
Other Noncurrent Liabilities [Member] | Interest Rate Swaps [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Selected financial liabilities		226	147
Other Noncurrent Liabilities [Member] | Foreign Currency Swap [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Selected financial liabilities		1,100	$ 1,100
Other Noncurrent Liabilities [Member] | Foreign Currency Forward-Exchange Contracts [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Selected financial liabilities		$ 5

[1] As of April 2, 2017, derivative instruments at fair value include interest rate swaps ($159 million), foreign currency swaps ($195 million) and foreign currency forward-exchange contracts ($156 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 April 2, 2017, derivative instruments at fair value include interest rate swaps ($489 million), foreign currency swaps ($37 million) and foreign currency forward-exchange contracts ($23 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 April 2, 2017, derivative instruments at fair value include foreign currency swaps ($296 million) and foreign currency forward-exchange contracts ($138 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 April 2, 2017, derivative instruments at fair value include interest rate swaps ($226 million), foreign currency swaps ($1.1 billion) and foreign currency forward-exchange contracts ($5 million) and, as of December 31, 2016, include interest rate swaps ($147 million) and foreign currency swaps ($1.1 billion).