Other Comprehensive Income (Loss), Non-Derivative Net Investment Hedge, Gain (Loss), Reclassification, Before Tax

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Other Comprehensive Income (Loss), Non-Derivative Net Investment Hedge, Gain (Loss), before Reclassification and Tax

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Other Comprehensive Income (Loss), Non-Derivatives And Derivatives, Gain (Loss), Reclassification, Before Tax

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Other Comprehensive Income (Loss), Non-Derivatives And Derivatives, Gain (Loss), Before Reclassification and Tax

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Other Comprehensive Income (Loss), Non-Derivatives And Derivatives, Other, Gain (Loss), Reclassification, Before Tax

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Other Comprehensive Income (Loss), Non-Derivatives And Derivatives, Other, Gain (Loss), before Reclassification and Tax

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Amount of gain (loss) from the increase (decrease) in fair value of derivative and nonderivative instruments designated as fair value hedging instruments recognized in the income statement.

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Amount of the increase (decrease) in fair value of the hedged item in a fair value hedge recognized in the income statement.

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

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Amount of realized and unrealized gain (loss) of derivative instruments not designated or qualifying as hedging instruments.

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Amount, before tax and reclassification, of gain (loss) from derivative instrument designated and qualifying cash flow hedge included in assessment of hedge effectiveness.

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Amount, before tax, of reclassification of gain (loss) from accumulated other comprehensive income (AOCI) for derivative instrument designated and qualifying as cash flow hedge included in assessment of hedge effectiveness.

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Amount, before tax, of adjustments from accumulated other comprehensive income (AOCI) for gain (loss) from increase (decrease) in value of excluded component of derivative designated and qualifying as hedge. Adjustments include, but are not limited to, reclassifications for sale and settlement, and amounts recognized under systematic and rational method.

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Amount, before tax and adjustments, of gain (loss) from increase (decrease) in value of excluded component of derivative designated and qualifying as hedge. Adjustments include, but are not limited to, reclassifications for sale and settlement, and amounts recognized under systematic and rational method.

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Amount, before tax and reclassification, of gain (loss) from derivative designated and qualifying as net investment hedge.

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Amount, before tax, of reclassification from accumulated other comprehensive income (AOCI) for gain (loss) from derivative designated and qualifying as net investment hedge.

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Financial Instruments - Derivative Financial Instruments and Hedging Activities (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gains/(Losses) Recognized in OCI	$ 476	$ 220	$ (10)
Amount of Gains/(Losses) Recognized in OCI	0	(1)
Amount of Gains/(Losses) Recognized in OCI	421	688
Amount of Gains/(Losses) Reclassified from OCI into OID and COS	664	(27)	$ 520
Other Nonoperating Income (Expense) [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gains/(Losses) Recognized in OID	(172)	136
Other (Income) Deductions And Cost Of Sales [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gains/(Losses) Reclassified from OCI into OID and COS	(1)	2
Amount of Gains/(Losses) Reclassified from OCI into OID and COS	808	41
Designated as Hedging Instrument [Member] \| Foreign exchange contracts [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gains/(Losses) Recognized in OCI	339	80
Amount of Gains/(Losses) Recognized in OCI	(313)	175
Designated as Hedging Instrument [Member] \| Foreign exchange contracts [Member] \| Other Nonoperating Income (Expense) [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gains/(Losses) Recognized in OID	0	5
Hedged Item	0	(5)
Designated as Hedging Instrument [Member] \| Foreign exchange contracts [Member] \| Other (Income) Deductions And Cost Of Sales [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gains/(Losses) Reclassified from OCI into OID and COS	525	(182)
Amount of Gains/(Losses) Reclassified from OCI into OID and COS	0	0
Designated as Hedging Instrument [Member] \| Interest rate contracts [Member] \| Other Nonoperating Income (Expense) [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gains/(Losses) Recognized in OID	900	(348)
Hedged Item	(900)	348
Designated as Hedging Instrument [Member] \| Foreign currency short-term borrowings [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gains/(Losses) Recognized in OCI	34	68
Designated as Hedging Instrument [Member] \| Foreign currency short-term borrowings [Member] \| Other (Income) Deductions And Cost Of Sales [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain/(Losses) Reclassified from OCI into OID and COS	0	0
Designated as Hedging Instrument [Member] \| Foreign currency long-term debt [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gains/(Losses) Recognized in OCI	36	149
Designated as Hedging Instrument [Member] \| Foreign currency long-term debt [Member] \| Other (Income) Deductions And Cost Of Sales [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain/(Losses) Reclassified from OCI into OID and COS	0	0
Designated as Hedging Instrument [Member] \| Cash Flow Hedging [Member] \| Foreign exchange contracts [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount excluded from effectiveness testing	136	140
Designated as Hedging Instrument [Member] \| Cash Flow Hedging [Member] \| Foreign exchange contracts [Member] \| Other (Income) Deductions And Cost Of Sales [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount excluded from effectiveness testing	140	153
Designated as Hedging Instrument [Member] \| Net Investment Hedging [Member] \| Foreign exchange contracts [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount excluded from effectiveness testing	188	77
Designated as Hedging Instrument [Member] \| Net Investment Hedging [Member] \| Foreign exchange contracts [Member] \| Other (Income) Deductions And Cost Of Sales [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount excluded from effectiveness testing	144	68
Not Designated as Hedging Instrument [Member] \| Foreign exchange contracts [Member] \| Other Nonoperating Income (Expense) [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gains/(Losses) Recognized in OID	$ (172)	$ 136