Financial Instruments - Derivative Financial Instruments and Hedging Activities (Detail) $ in Millions, £ in Billions		3 Months Ended		9 Months Ended
		Oct. 02, 2016 USD ($)	Sep. 27, 2015 USD ($)	Oct. 02, 2016 USD ($)	Sep. 27, 2015 USD ($)	Oct. 02, 2016 GBP (£)	Dec. 31, 2015 USD ($)
Derivative Instruments, Gain (Loss) [Line Items]
Long-term debt	[1]	$ 30,437		$ 30,437			$ 28,740
Other Comprehensive Income (Loss) [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gains/(Losses) Recognized in OCI (Effective Portion)	[2],[3]	(126)	$ (235)	(1,014)	$ 180
Other Income (Expense) [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gains/(Losses) Recognized in OID	[3],[4],[5]	18	49	(56)	(64)
Reclassification out of Accumulated Other Comprehensive Income [Member] | Other Income (Expense) [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gains/(Losses) Reclassified from OCI into OID (Effective Portion)	[2],[3]	(150)	35	(283)	545
Other Derivative Instruments [Member] | Other Comprehensive Income (Loss) [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gains/(Losses) Recognized in OCI (Effective Portion)	[2],[3]	0	(32)	1	(18)
Other Derivative Instruments [Member] | Other Income (Expense) [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gains/(Losses) Recognized in OID	[3],[4],[5]	0	0	0	0
Other Derivative Instruments [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member] | Other Income (Expense) [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gains/(Losses) Reclassified from OCI into OID (Effective Portion)	[2],[3]	0	0	0	0
Interest Rate Contract [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative asset, notional amount		19,500		19,500
Foreign Currency Swap [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative asset, notional amount		36,400		36,400
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)	[2],[3]	87	(96)	(204)	(594)
Foreign Currency Swap [Member] | Designated as Hedging Instrument [Member] | Cash Flow Hedging [Member] | Other Income (Expense) [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gains/(Losses) Recognized in OID	[3],[4],[5]	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 (Expense) [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gains/(Losses) Reclassified from OCI into OID (Effective Portion)	[2],[3]	(39)	(86)	(165)	(451)
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)	[2],[3]	0	0	0	0
Foreign Currency Swap [Member] | Not Designated as Hedging Instrument [Member] | Other Income (Expense) [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gains/(Losses) Recognized in OID	[3],[4],[5]	(4)	0	(9)	(2)
Foreign Currency Swap [Member] | Not Designated as Hedging Instrument [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member] | Other Income (Expense) [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gains/(Losses) Reclassified from OCI into OID (Effective Portion)	[2],[3]	0	0	0	0
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)	[2],[3]	(212)	(89)	(770)	532
Foreign Currency Forward-Exchange Contracts [Member] | Designated as Hedging Instrument [Member] | Cash Flow Hedging [Member] | Other Income (Expense) [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gains/(Losses) Recognized in OID	[3],[4],[5]	2	0	1	0
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 (Expense) [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gains/(Losses) Reclassified from OCI into OID (Effective Portion)	[2],[3]	(111)	120	(118)	996
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)	[2],[3]	0	(5)	(15)	254
Foreign Currency Forward-Exchange Contracts [Member] | Designated as Hedging Instrument [Member] | Net Investment Hedging [Member] | Other Income (Expense) [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gains/(Losses) Recognized in OID	[3],[4],[5]	0	0	1	2
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 (Expense) [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gains/(Losses) Reclassified from OCI into OID (Effective Portion)	[2],[3]	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)	[2],[3]	0	0	0	0
Foreign Currency Forward-Exchange Contracts [Member] | Not Designated as Hedging Instrument [Member] | Other Income (Expense) [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gains/(Losses) Recognized in OID	[3],[4],[5]	20	50	(49)	(64)
Foreign Currency Forward-Exchange Contracts [Member] | Not Designated as Hedging Instrument [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member] | Other Income (Expense) [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gains/(Losses) Reclassified from OCI into OID (Effective Portion)	[2],[3]	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)	[2],[3]	0	(12)	(26)	6
Foreign Currency Short Term Borrowings [Member] | Net Investment Hedging, Nonderivative Instruments [Member] | Other Income (Expense) [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gains/(Losses) Recognized in OID	[3],[4],[5]	0	0	0	0
Foreign Currency Short Term Borrowings [Member] | Net Investment Hedging, Nonderivative Instruments [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member] | Other Income (Expense) [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gains/(Losses) Reclassified from OCI into OID (Effective Portion)	[2],[3]	$ 0	$ 0	$ 0	$ 0
Unsecured Debt [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Long-term debt | £						£ 1.9

[1] Amounts may not add due to rounding.

[2] For derivative financial instruments in cash flow hedge relationships, the effective portion is included in Other comprehensive income/(loss)––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/(loss)––Foreign currency translation adjustments, net.

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

[4] Also, includes gains and losses attributable to derivative instruments designated and qualifying as fair value hedges, as well as the offsetting gains and losses attributable to the hedged items in such hedging relationships.

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