Effect of Derivative Instruments (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Derivative Instruments, Gain (Loss) [Line Items]
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, before Tax	$ 20	$ (237)	$ (12)	$ (164)
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net	4	26	21	15
Designated as Hedging Instrument [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, before Tax	20	(237)	(12)	(164)
Gain (Loss) on Hedging Activity	(10)	7	21	40
Not Designated as Hedging Instrument [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, before Tax	0	0	0	0
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net	14	19	0	(25)
Interest Rate Contract [Member] | Not Designated as Hedging Instrument [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, before Tax	0	0	0	0
Interest Rate Contract [Member] | Not Designated as Hedging Instrument [Member] | Interest Expense and Amortization of Debt Discount
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net	(1)	0	(7)	0
Interest Rate Contract [Member] | Fair Value Hedging [Member] | Designated as Hedging Instrument [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, before Tax			0	0
Interest Rate Contract [Member] | Fair Value Hedging [Member] | Designated as Hedging Instrument [Member] | Interest Expense and Amortization of Debt Discount
Derivative Instruments, Gain (Loss) [Line Items]
Gain (Loss) on Hedging Activity			24	0
Interest Rate Contract [Member] | Cash Flow Hedging [Member] | Designated as Hedging Instrument [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, before Tax	0	(130)	0	(236)
Interest Rate Contract [Member] | Cash Flow Hedging [Member] | Designated as Hedging Instrument [Member] | Interest Expense and Amortization of Debt Discount
Derivative Instruments, Gain (Loss) [Line Items]
Gain (Loss) on Hedging Activity	0	0	0	0
Excluded Components [Member] | Fair Value Hedging [Member] | Designated as Hedging Instrument [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivatives used in Net Investment Hedge, Gain (Loss), Reclassified to Earnings, Net of Tax	0	0	0	0
Excluded Components [Member] | Fair Value Hedging [Member] | Designated as Hedging Instrument [Member] | Cumulative Translation Adjustments [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, before Tax	4	(4)	7	(4)
Excluded Components [Member] | Net Investment Hedging [Member] | Designated as Hedging Instrument [Member] | Cumulative Translation Adjustments [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, before Tax	5	66	27	152
Excluded Components [Member] | Net Investment Hedging [Member] | Designated as Hedging Instrument [Member] | Other Nonoperating Income (Expense) [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivatives used in Net Investment Hedge, Gain (Loss), Reclassified to Earnings, Net of Tax	2	25	16	50
Foreign Exchange Contract [Member] | Not Designated as Hedging Instrument [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, before Tax	0	0	0	0
Foreign Exchange Contract [Member] | Not Designated as Hedging Instrument [Member] | Other Nonoperating Income (Expense) [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net	9	38	(10)	6
Foreign Exchange Contract [Member] | Cash Flow Hedging [Member] | Designated as Hedging Instrument [Member] | Cost of Sales
Derivative Instruments, Gain (Loss) [Line Items]
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, before Tax	(5)	(1)	3	6
Gain (Loss) on Hedging Activity	5	8	9	16
Foreign Exchange Contract [Member] | Cash Flow Hedging [Member] | Designated as Hedging Instrument [Member] | Other Nonoperating Income (Expense) [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, before Tax	0	1	0	2
Gain (Loss) on Hedging Activity	0	0	0	0
Foreign Exchange Contract [Member] | Net Investment Hedging [Member] | Designated as Hedging Instrument [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, before Tax	(6)	(128)	16	(98)
Gain (Loss) on Hedging Activity	0	0	0	0
Commodity Contract [Member] | Not Designated as Hedging Instrument [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, before Tax	0	0	0	0
Commodity Contract [Member] | Not Designated as Hedging Instrument [Member] | Cost of Sales
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net	6	(19)	17	(31)
Commodity Contract [Member] | Cash Flow Hedging [Member] | Designated as Hedging Instrument [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, before Tax	22	(41)	(65)	14
Commodity Contract [Member] | Cash Flow Hedging [Member] | Designated as Hedging Instrument [Member] | Cost of Sales
Derivative Instruments, Gain (Loss) [Line Items]
Gain (Loss) on Hedging Activity	$ (17)	$ (26)	$ (28)	$ (26)