Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

No definition available.

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Amount of income (loss) from continuing operations before deduction of income tax expense (benefit) and income (loss) attributable to noncontrolling interest, and addition of income (loss) from equity method investments.

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Amount, including tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value-added and excise.

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Derivative instruments (Locations and Effective Portions of Gain (Loss) Reclassified out of AOCI) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Derivative Instruments, Gain (Loss) [Line Items]
Interest and other income, net	$ 162	$ 165	$ 393	$ 360
Income before income taxes	2,647	2,542	5,266	5,002
Product sales [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Product sales	5,679	5,574	11,022	10,773
Accumulated net gain (loss) from cash flow hedges [Member] \| Reclassification out of Accumulated Other Comprehensive Income [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Income before income taxes	(318)	330	(188)	461
Accumulated net gain (loss) from cash flow hedges [Member] \| Reclassification out of Accumulated Other Comprehensive Income [Member] \| Foreign currency contracts [Member] \| Product sales [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Product sales	(20)		(54)
Accumulated net gain (loss) from cash flow hedges [Member] \| Reclassification out of Accumulated Other Comprehensive Income [Member] \| Cross-currency swap contracts [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Interest and other income, net	(298)		(134)
Accumulated net gain (loss) from cash flow hedges [Member] \| Reclassification out of Accumulated Other Comprehensive Income [Member] \| Cash flow hedge [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Income before income taxes	(318)	330	(188)	461
Accumulated net gain (loss) from cash flow hedges [Member] \| Reclassification out of Accumulated Other Comprehensive Income [Member] \| Cash flow hedge [Member] \| Foreign currency contracts [Member] \| Product sales [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Product sales	(20)	33	(54)	90
Accumulated net gain (loss) from cash flow hedges [Member] \| Reclassification out of Accumulated Other Comprehensive Income [Member] \| Cash flow hedge [Member] \| Cross-currency swap contracts [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Interest and other income, net	$ (298)	$ 297	$ (134)	$ 371