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

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The effective portion of net gain (loss) reclassified from accumulated other comprehensive income into income on derivative instruments designated and qualifying as hedging instruments.

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The portion of gains and losses (net) on derivative instruments designated and qualifying as hedging instruments representing (a) the amount of the hedge ineffectiveness and (b) the amount, if any, excluded from the assessment of hedge effectiveness.

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Reflects the carrying amount of loans deemed to be questionable as to collection on which no interest is continuing to be recognized.

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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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Derivative Financial Instruments and Risk Management (Details 4) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017	Dec. 31, 2017
Derivative Instruments, Gain (Loss)
Loans and Leases Receivable, Nonperforming, Nonaccrual of Interest					$ 0
Designated Derivatives \| Cash Flow Hedges
Derivative Instruments, Gain (Loss)
Amount of Gains (Losses) Recognized in AOCI (Effective Portion)	$ 41	$ (6)	$ 96	$ 9
Amount of Gains (Losses) Reclassified from AOCI to Earnings	39	(16)	141	(118)
Recognized in Earnings (Ineffective Portion)	0	0	0	0
Designated Derivatives \| Cash Flow Hedges \| Foreign exchange contracts \| Machinery, Energy & Transportation
Derivative Instruments, Gain (Loss)
Amount of Gains (Losses) Recognized in AOCI (Effective Portion)	(15)	16	(55)	72
Designated Derivatives \| Cash Flow Hedges \| Foreign exchange contracts \| Machinery, Energy & Transportation \| Other Income (Expense)
Derivative Instruments, Gain (Loss)
Amount of Gains (Losses) Reclassified from AOCI to Earnings	(17)	4	(12)	(49)
Recognized in Earnings (Ineffective Portion)	0	0	0	0
Designated Derivatives \| Cash Flow Hedges \| Foreign exchange contracts \| Financial Products
Derivative Instruments, Gain (Loss)
Amount of Gains (Losses) Recognized in AOCI (Effective Portion)	53	(21)	143	(62)
Designated Derivatives \| Cash Flow Hedges \| Foreign exchange contracts \| Financial Products \| Other Income (Expense)
Derivative Instruments, Gain (Loss)
Amount of Gains (Losses) Reclassified from AOCI to Earnings	51	(20)	141	(69)
Recognized in Earnings (Ineffective Portion)	0	0	0	0
Designated Derivatives \| Cash Flow Hedges \| Foreign exchange contracts \| Financial Products \| Interest Expense
Derivative Instruments, Gain (Loss)
Amount of Gains (Losses) Recognized in AOCI (Effective Portion)	0		0
Amount of Gains (Losses) Reclassified from AOCI to Earnings	5		13
Recognized in Earnings (Ineffective Portion)	0		0
Designated Derivatives \| Cash Flow Hedges \| Interest rate contracts \| Machinery, Energy & Transportation
Derivative Instruments, Gain (Loss)
Amount of Gains (Losses) Recognized in AOCI (Effective Portion)	0	0	0	0
Designated Derivatives \| Cash Flow Hedges \| Interest rate contracts \| Machinery, Energy & Transportation \| Interest Expense
Derivative Instruments, Gain (Loss)
Amount of Gains (Losses) Reclassified from AOCI to Earnings	0	(2)	(2)	(5)
Recognized in Earnings (Ineffective Portion)	0	0	0	0
Designated Derivatives \| Cash Flow Hedges \| Interest rate contracts \| Financial Products
Derivative Instruments, Gain (Loss)
Amount of Gains (Losses) Recognized in AOCI (Effective Portion)	3	(1)	8	(1)
Designated Derivatives \| Cash Flow Hedges \| Interest rate contracts \| Financial Products \| Interest Expense
Derivative Instruments, Gain (Loss)
Amount of Gains (Losses) Reclassified from AOCI to Earnings	0	2	1	5
Recognized in Earnings (Ineffective Portion)	0	0	0	0
Undesignated Derivatives
Derivative Instruments, Gain (Loss)
Gains (Losses) on Derivatives Not Designated as Hedging Instruments	3	37	(19)	100
Undesignated Derivatives \| Foreign exchange contracts \| Machinery, Energy & Transportation \| Other Income (Expense)
Derivative Instruments, Gain (Loss)
Gains (Losses) on Derivatives Not Designated as Hedging Instruments	(5)	15	(43)	67
Undesignated Derivatives \| Foreign exchange contracts \| Financial Products \| Other Income (Expense)
Derivative Instruments, Gain (Loss)
Gains (Losses) on Derivatives Not Designated as Hedging Instruments	13	11	29	21
Undesignated Derivatives \| Commodity contracts \| Machinery, Energy & Transportation \| Other Income (Expense)
Derivative Instruments, Gain (Loss)
Gains (Losses) on Derivatives Not Designated as Hedging Instruments	$ (5)	$ 11	$ (5)	$ 12