Balance Sheet Effect of Derivative Financial Instruments (Details) - USD ($)	Sep. 30, 2016	Dec. 31, 2015
Derivative [Line Items]
Notional	$ 136,197,000,000	$ 129,083,000,000
Derivative Asset, Current	1,395,000,000	1,209,000,000
Derivative Asset, Noncurrent	1,527,000,000	643,000,000
Derivative Asset	2,922,000,000	1,852,000,000
Derivative Liability, Current	297,000,000	692,000,000
Derivative Liability, Noncurrent	94,000,000	181,000,000
Derivative Liability	391,000,000	873,000,000
Derivative, pledged cash collateral	13,000,000	0
Designated as Hedging Instrument [Member] \| Foreign Exchange Contract [Member] \| Cash Flow Hedging [Member]
Derivative [Line Items]
Notional	16,775,000,000	12,593,000,000
Designated as Hedging Instrument [Member] \| Interest Rate Contract [Member] \| Fair Value Hedging [Member]
Derivative [Line Items]
Notional	36,215,000,000	28,964,000,000
Not Designated as Hedging Instrument [Member] \| Foreign Exchange Contract [Member]
Derivative [Line Items]
Notional	17,267,000,000	21,108,000,000
Not Designated as Hedging Instrument [Member] \| Cross-currency interest rate swap contracts [Member]
Derivative [Line Items]
Notional	3,765,000,000	3,137,000,000
Not Designated as Hedging Instrument [Member] \| Interest Rate Contract [Member]
Derivative [Line Items]
Notional	61,650,000,000	62,638,000,000
Not Designated as Hedging Instrument [Member] \| Commodity Contract [Member]
Derivative [Line Items]
Notional	525,000,000	643,000,000
Fair Value, Measurements, Recurring [Member] \| Level 2 [Member]
Derivative [Line Items]
Fair Value of Assets	2,922,000,000	1,852,000,000
Fair Value of Liabilities	391,000,000	873,000,000
Counterparty Netting, Not Offset	347,000,000	733,000,000
Counterparty Netting, Not Offset	347,000,000	733,000,000
Fair Value, Measurements, Recurring [Member] \| Level 2 [Member] \| Designated as Hedging Instrument [Member] \| Foreign Exchange Contract [Member] \| Cash Flow Hedging [Member]
Derivative [Line Items]
Fair Value of Assets	818,000,000	522,000,000
Fair Value of Liabilities	136,000,000	366,000,000
Fair Value, Measurements, Recurring [Member] \| Level 2 [Member] \| Designated as Hedging Instrument [Member] \| Interest Rate Contract [Member] \| Fair Value Hedging [Member]
Derivative [Line Items]
Fair Value of Assets	1,217,000,000	670,000,000
Fair Value of Liabilities	0	16,000,000
Fair Value, Measurements, Recurring [Member] \| Level 2 [Member] \| Not Designated as Hedging Instrument [Member] \| Foreign Exchange Contract [Member]
Derivative [Line Items]
Fair Value of Assets	352,000,000	426,000,000
Fair Value of Liabilities	129,000,000	242,000,000
Fair Value, Measurements, Recurring [Member] \| Level 2 [Member] \| Not Designated as Hedging Instrument [Member] \| Cross-currency interest rate swap contracts [Member]
Derivative [Line Items]
Fair Value of Assets	383,000,000	73,000,000
Fair Value of Liabilities	0	111,000,000
Fair Value, Measurements, Recurring [Member] \| Level 2 [Member] \| Not Designated as Hedging Instrument [Member] \| Interest Rate Contract [Member]
Derivative [Line Items]
Fair Value of Assets	142,000,000	159,000,000
Fair Value of Liabilities	122,000,000	112,000,000
Fair Value, Measurements, Recurring [Member] \| Level 2 [Member] \| Not Designated as Hedging Instrument [Member] \| Commodity Contract [Member]
Derivative [Line Items]
Fair Value of Assets	10,000,000	2,000,000
Fair Value of Liabilities	$ 4,000,000	$ 26,000,000

Aggregate notional amount specified by the derivative(s). Expressed as an absolute value.

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