Other (Income) Expense, Net (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Other Income and Expenses [Abstract]
Interest income	$ (343)	$ (385)	$ (328)
Interest expense	772	754	693
Exchange losses (gains)	145	(11)	174
Income on investments in equity securities, net	(324)	(352)	(43)
Net periodic defined benefit plan (credit) cost other than service cost	(512)	(512)	(531)
Other, net	(140)	6	224
Other (income) expense, net	$ (402)	$ (500)	$ 189

Other nonoperating income and expense items not separately disclosed.

No definition available.

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- Definition

Amount of unrealized and realized gain (loss) on investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI).

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Amount before tax of foreign currency transaction realized and unrealized gain (loss) recognized in the income statement.

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Amount of the cost of borrowed funds accounted for as interest expense.

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Amount before accretion (amortization) of purchase discount (premium) of interest income on nonoperating securities.

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Amount of expense (reversal of expense) for net periodic benefit cost components, excluding service cost component, of defined benefit plan. Amount includes, but is not limited to, interest cost, expected (return) loss on plan asset, amortization of prior service cost (credit), amortization of (gain) loss, amortization of transition (asset) obligation, settlement (gain) loss, curtailment (gain) loss and certain termination benefits.

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Amount of income (expense) related to nonoperating activities, classified as other.

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