Financial Instruments - Derivative Financial Instruments and Hedging Activities (Detail) - USD ($) $ in Millions		3 Months Ended		9 Months Ended
		Sep. 27, 2015	Sep. 28, 2014	Sep. 27, 2015	Sep. 28, 2014	Dec. 31, 2014
Derivative Instruments, Gain (Loss) [Line Items]
Long-term debt	[1]	$ 29,079		$ 29,079		$ 31,541
Other Comprehensive Income (Loss) [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gains/(Losses) Recognized in OCI (Effective Portion)	[2],[3]	(235)	$ (104)	180	$ (194)
Other Nonoperating Income (Expense) [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gains/(Losses) Recognized in OID	[3],[4],[5]	49	31	(64)	48
Reclassification out of Accumulated Other Comprehensive Income [Member] | Other Nonoperating Income (Expense) [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gains/(Losses) Reclassified from OCI into OID (Effective Portion)	[2],[3]	35	(441)	545	(527)
All other, net [Member] | Other Comprehensive Income (Loss) [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gains/(Losses) Recognized in OCI (Effective Portion)	[2],[3]	(32)	0	(18)	0
All other, net [Member] | Other Nonoperating Income (Expense) [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gains/(Losses) Recognized in OID	[3],[4],[5]	0	0	0	(3)
All other, net [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member] | Other Nonoperating 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 Swap [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative asset, notional amount		32,400		32,400
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]	(96)	(383)	(594)	(409)
Foreign Currency Swap [Member] | Designated as Hedging Instrument [Member] | Cash Flow Hedging [Member] | Other Nonoperating 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 Nonoperating Income (Expense) [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gains/(Losses) Reclassified from OCI into OID (Effective Portion)	[2],[3]	(86)	(474)	(451)	(471)
Foreign Currency Swap [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	21	0	11
Foreign Currency Swap [Member] | Designated as Hedging Instrument [Member] | Net Investment Hedging [Member] | Other Nonoperating 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] | Net Investment Hedging [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member] | Other Nonoperating 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 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
Foreign Currency Swap [Member] | Not Designated as Hedging Instrument [Member] | Other Nonoperating Income (Expense) [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gains/(Losses) Recognized in OID	[3],[4],[5]			(2)	0
Foreign Currency Swap [Member] | Not Designated as Hedging Instrument [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member] | Other Nonoperating Income (Expense) [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gains/(Losses) Reclassified from OCI into OID (Effective Portion)	[2],[3]			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]	(89)	212	532	180
Foreign Currency Forward-Exchange Contracts [Member] | Designated as Hedging Instrument [Member] | Cash Flow Hedging [Member] | Other Nonoperating 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 Forward-Exchange Contracts [Member] | Designated as Hedging Instrument [Member] | Cash Flow Hedging [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member] | Other Nonoperating Income (Expense) [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gains/(Losses) Reclassified from OCI into OID (Effective Portion)	[2],[3]	120	33	996	(56)
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]	(5)	0	254	0
Foreign Currency Forward-Exchange Contracts [Member] | Designated as Hedging Instrument [Member] | Net Investment Hedging [Member] | Other Nonoperating Income (Expense) [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gains/(Losses) Recognized in OID	[3],[4],[5]	0	0	2	0
Foreign Currency Forward-Exchange Contracts [Member] | Designated as Hedging Instrument [Member] | Net Investment Hedging [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member] | Other Nonoperating 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 Nonoperating Income (Expense) [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gains/(Losses) Recognized in OID	[3],[4],[5]	50	30	(64)	51
Foreign Currency Forward-Exchange Contracts [Member] | Not Designated as Hedging Instrument [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member] | Other Nonoperating 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		20,800		20,800
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]	(12)	0	6	0
Foreign Currency Short Term Borrowings [Member] | Net Investment Hedging, Nonderivative Instruments [Member] | Other Nonoperating 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 Nonoperating 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 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)	[2],[3]	0	46	0	24
Foreign Currency Long Term Debt [Member] | Net Investment Hedging, Nonderivative Instruments [Member] | Other Nonoperating 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 Long Term Debt [Member] | Net Investment Hedging, Nonderivative Instruments [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member] | Other Nonoperating 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] | Senior Debt, Two Billion Five Hundred Million Pound, Due June 2023 [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Long-term debt		$ 2,300		$ 2,300

[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 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 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.