Amount of increase (decrease) in the fair value of derivatives recognized in the income statement.

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Amount before tax of increase (decrease) in accumulated gain (loss) from derivative instruments designated and qualifying as the effective portion of cash flow hedges and an entity's share of an equity investee's increase (decrease) in deferred hedging gain (loss).

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Financial Instruments, Hedging Activities and Fair Value Measurements (Fair Value, Cash Flow and Net Investment Hedges) (Detail) $ in Millions, € in Billions	12 Months Ended
	Dec. 31, 2018 USD ($)	Dec. 31, 2018 EUR (€)	Dec. 31, 2017 USD ($)	Dec. 31, 2016 USD ($)
Fair Value Hedging
Derivatives, Fair Value [Line Items]
Gain (Loss) Recognized Amount	$ 3			$ 0
Fair Value Hedging \| Foreign Currency Contracts \| Sales
Derivatives, Fair Value [Line Items]
Gain (Loss) Recognized Amount	3			0
Cash Flow Hedging
Derivatives, Fair Value [Line Items]
Gain (Loss) Deferred in OCI	(9)		$ (7)	1
Gain (Loss) Recognized Amount	(8)		9	(5)
Cash Flow Hedging \| Foreign Currency Contracts \| Other Expense
Derivatives, Fair Value [Line Items]
Gain (Loss) Deferred in OCI	(9)		(7)	1
Gain (Loss) Recognized Amount	(8)		9	(5)
Net Investment Hedging
Derivatives, Fair Value [Line Items]
Notional Amount of Nonderivative Instruments \| €		€ 2.3
Gain (Loss) Deferred in OCI	145		(464)	133
Gain (Loss) Recognized Amount	13
Net Investment Hedging \| Foreign Currency Contracts \| Other Expense
Derivatives, Fair Value [Line Items]
Gain (Loss) Deferred in OCI	0		0	(14)
Net Investment Hedging \| Currency Swap
Derivatives, Fair Value [Line Items]
Gain (Loss) Deferred in OCI	21		(61)	25
Gain (Loss) Recognized Amount	13
Net Investment Hedging \| Other Foreign Currency Denominated Debt
Derivatives, Fair Value [Line Items]
Gain (Loss) Deferred in OCI	124		(403)	122
Economic Hedging \| Foreign Currency Contracts \| Other Expense
Derivatives, Fair Value [Line Items]
Gain (Loss) Recognized Amount	$ 55		$ 14	$ 14