Derivative Financial Instruments and Risk Management Derivative Financial Instruments and Risk Management- Effect of Derivatives not designated as hedging instruments (Details) - Undesignated Derivatives - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Derivative
Gains (Losses) on Derivatives Not Designated as Hedging Instruments	$ 8	$ (10)	$ 67	$ (10)
Other Nonoperating Income (Expense) | Financial Products | Foreign exchange contracts
Derivative
Gains (Losses) on Derivatives Not Designated as Hedging Instruments	(23)	(10)	85	(39)
Other Nonoperating Income (Expense) | Machinery, Energy & Transportation | Foreign exchange contracts
Derivative
Gains (Losses) on Derivatives Not Designated as Hedging Instruments	16	7	13	13
Other Nonoperating Income (Expense) | Machinery, Energy & Transportation | Commodity contracts
Derivative
Gains (Losses) on Derivatives Not Designated as Hedging Instruments	$ 15	$ (7)	$ (31)	$ 16