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
	Mar. 31, 2020	Mar. 31, 2019
Derivative
Gains (Losses) on Derivatives Not Designated as Hedging Instruments	$ 59	$ 0
Other Nonoperating Income (Expense) | Financial Products | Foreign exchange contracts
Derivative
Gains (Losses) on Derivatives Not Designated as Hedging Instruments	108	(29)
Other Nonoperating Income (Expense) | Machinery, Energy & Transportation | Foreign exchange contracts
Derivative
Gains (Losses) on Derivatives Not Designated as Hedging Instruments	(3)	6
Other Nonoperating Income (Expense) | Machinery, Energy & Transportation | Commodity contracts
Derivative
Gains (Losses) on Derivatives Not Designated as Hedging Instruments	$ (46)	$ 23