Financial Instruments - Derivative Financial Instruments and Hedging Activities (Detail) - USD ($) $ in Millions		3 Months Ended		9 Months Ended
		Oct. 01, 2017	Oct. 02, 2016	Oct. 01, 2017	Oct. 02, 2016
Derivative Instruments, Gain (Loss) [Line Items]
Long-term debt		$ 34,503		$ 34,503
Pre-tax loss on foreign currency forward exchange contracts				97
Pre-tax loss to be reclassified		63		63
Gain (loss) recognized as an offset		(4)		67
Gain (loss) on cash flow hedge ineffectiveness		0	$ 0	0	$ 0
Other Comprehensive Income (Loss) [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gains/(Losses) Recognized in OCI (Effective Portion)	[1],[2]	(216)	(126)	(666)	(1,014)
Other (Income)/Deductions, Net [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gains/(Losses) Recognized in OID	[2],[3],[4]	34	18	(117)	(56)
Reclassification out of Accumulated Other Comprehensive Income [Member] | Other (Income)/Deductions, Net [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gains/(Losses) Reclassified from OCI into OID and COS (Effective Portion)	[1],[2]	(55)	(150)	394	(283)
Other Derivative Instruments [Member] | Other Comprehensive Income (Loss) [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gains/(Losses) Recognized in OCI (Effective Portion)	[1],[2]	1	0	1	1
Other Derivative Instruments [Member] | Other (Income)/Deductions, Net [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gains/(Losses) Recognized in OID	[2],[3],[4]	0	0	0	0
Other Derivative Instruments [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member] | Other (Income)/Deductions, Net [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gains/(Losses) Reclassified from OCI into OID and COS (Effective Portion)	[1],[2]	0	0	0	0
Interest Rate Contract [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative asset, notional amount		12,400		12,400
Foreign Currency Swap [Member] | Designated as Hedging Instrument [Member] | Cash Flow Hedging [Member] | Other Comprehensive Income (Loss) [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gains/(Losses) Recognized in OCI (Effective Portion)	[1],[2]	218	87	455	(204)
Foreign Currency Swap [Member] | Designated as Hedging Instrument [Member] | Cash Flow Hedging [Member] | Other (Income)/Deductions, Net [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gains/(Losses) Recognized in OID	[2],[3],[4]	0	0	0	0
Foreign Currency Swap [Member] | Designated as Hedging Instrument [Member] | Cash Flow Hedging [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member] | Other (Income)/Deductions, Net [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gains/(Losses) Reclassified from OCI into OID and COS (Effective Portion)	[1],[2]	148	(39)	419	(165)
Foreign Currency Swap [Member] | Not Designated as Hedging Instrument [Member] | Other Comprehensive Income (Loss) [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gains/(Losses) Recognized in OCI (Effective Portion)	[1],[2]	0	0	0	0
Foreign Currency Swap [Member] | Not Designated as Hedging Instrument [Member] | Other (Income)/Deductions, Net [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gains/(Losses) Recognized in OID	[2],[3],[4]	0	(4)	(1)	(9)
Foreign Currency Swap [Member] | Not Designated as Hedging Instrument [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member] | Other (Income)/Deductions, Net [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gains/(Losses) Reclassified from OCI into OID and COS (Effective Portion)	[1],[2]	0	0	0	0
Foreign Currency Forward-Exchange Contracts [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative asset, notional amount		31,500		31,500
Notional amount		3,900		3,900
Foreign Currency Forward-Exchange Contracts [Member] | Designated as Hedging Instrument [Member] | Cash Flow Hedging [Member] | Other Comprehensive Income (Loss) [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gains/(Losses) Recognized in OCI (Effective Portion)	[1],[2]	(269)	(212)	(604)	(770)
Foreign Currency Forward-Exchange Contracts [Member] | Designated as Hedging Instrument [Member] | Cash Flow Hedging [Member] | Other (Income)/Deductions, Net [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gains/(Losses) Recognized in OID	[2],[3],[4]	1	2	(5)	1
Foreign Currency Forward-Exchange Contracts [Member] | Designated as Hedging Instrument [Member] | Cash Flow Hedging [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member] | Other (Income)/Deductions, Net [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gains/(Losses) Reclassified from OCI into OID and COS (Effective Portion)	[1],[2]	(204)	(111)	(26)	(118)
Foreign Currency Forward-Exchange Contracts [Member] | Designated as Hedging Instrument [Member] | Net Investment Hedging [Member] | Other Comprehensive Income (Loss) [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gains/(Losses) Recognized in OCI (Effective Portion)	[1],[2]	0	0	0	(15)
Foreign Currency Forward-Exchange Contracts [Member] | Designated as Hedging Instrument [Member] | Net Investment Hedging [Member] | Other (Income)/Deductions, Net [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gains/(Losses) Recognized in OID	[2],[3],[4]	0	0	0	1
Foreign Currency Forward-Exchange Contracts [Member] | Designated as Hedging Instrument [Member] | Net Investment Hedging [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member] | Other (Income)/Deductions, Net [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gains/(Losses) Reclassified from OCI into OID and COS (Effective Portion)	[1],[2]	0	0	0	0
Foreign Currency Forward-Exchange Contracts [Member] | Not Designated as Hedging Instrument [Member] | Other Comprehensive Income (Loss) [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gains/(Losses) Recognized in OCI (Effective Portion)	[1],[2]	0	0	0	0
Foreign Currency Forward-Exchange Contracts [Member] | Not Designated as Hedging Instrument [Member] | Other (Income)/Deductions, Net [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gains/(Losses) Recognized in OID	[2],[3],[4]	33	20	(111)	(49)
Foreign Currency Forward-Exchange Contracts [Member] | Not Designated as Hedging Instrument [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member] | Other (Income)/Deductions, Net [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gains/(Losses) Reclassified from OCI into OID and COS (Effective Portion)	[1],[2]	0	0	0	0
Foreign Currency Short Term Borrowings [Member] | Net Investment Hedging, Nonderivative Instruments [Member] | Other Comprehensive Income (Loss) [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gains/(Losses) Recognized in OCI (Effective Portion)	[1],[2]			0	(26)
Foreign Currency Short Term Borrowings [Member] | Net Investment Hedging, Nonderivative Instruments [Member] | Other (Income)/Deductions, Net [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gains/(Losses) Recognized in OID	[2],[3],[4]			0	0
Foreign Currency Short Term Borrowings [Member] | Net Investment Hedging, Nonderivative Instruments [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member] | Other (Income)/Deductions, Net [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gains/(Losses) Reclassified from OCI into OID and COS (Effective Portion)	[1],[2]			0	0
Foreign Currency Long Term Debt [Member] | Net Investment Hedging, Nonderivative Instruments [Member] | Other Comprehensive Income (Loss) [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gains/(Losses) Recognized in OCI (Effective Portion)	[1],[2]	(166)	0	(518)	0
Foreign Currency Long Term Debt [Member] | Net Investment Hedging, Nonderivative Instruments [Member] | Other (Income)/Deductions, Net [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gains/(Losses) Recognized in OID	[2],[3],[4]	0	0	0	0
Foreign Currency Long Term Debt [Member] | Net Investment Hedging, Nonderivative Instruments [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member] | Other (Income)/Deductions, Net [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gains/(Losses) Reclassified from OCI into OID and COS (Effective Portion)	[1],[2]	0	$ 0	0	$ 0
Unsecured Debt [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Long-term debt		$ 2,000		$ 2,000

[1] For derivative financial instruments in cash flow hedge relationships, the effective portion is included in Other comprehensive income––Unrealized holding losses on derivative financial instruments, net. For derivative financial instruments in net investment hedge relationships and for foreign currency debt designated as hedging instruments, the effective portion is included in Other comprehensive income––Foreign currency translation adjustments, net.

[2] OID = Other (income)/deductions—net, included in Other (income)/deductions—net in the condensed consolidated statements of income. COS = Cost of sales, included in Cost of sales in the condensed consolidated statements of income.OCI = Other comprehensive income/(loss), included in the condensed consolidated statements of comprehensive income.

[3] Includes gains and losses attributable to derivative instruments designated and qualifying as fair value hedges (primarily interest rate swaps), as well as the offsetting gains and losses attributable to the hedged items in such hedging relationships.

[4] There was no significant ineffectiveness for any period presented.