Derivative Financial Instruments and Risk Management (Details 6) - USD ($) $ in Millions	Mar. 31, 2018	Dec. 31, 2017
Offsetting Liabilities
Gross Amount of Recognized Liabilities	$ (126)	$ (93)
Gross Amounts Offset in the Statement of Financial Position	0	0
Net Amount of Liabilities Presented in the Statement of Financial Position	(126)	(93)
Financial Instruments	13	32
Cash Collateral Pledged	0	0
Net Amount of Liabilities	(113)	(61)
Machinery, Energy & Transportation
Offsetting Liabilities
Gross Amount of Recognized Liabilities	(10)	(25)
Gross Amounts Offset in the Statement of Financial Position	0	0
Net Amount of Liabilities Presented in the Statement of Financial Position	(10)	(25)
Financial Instruments	9	22
Cash Collateral Pledged	0	0
Net Amount of Liabilities	(1)	(3)
Financial Products
Offsetting Liabilities
Gross Amount of Recognized Liabilities	(116)	(68)
Gross Amounts Offset in the Statement of Financial Position	0	0
Net Amount of Liabilities Presented in the Statement of Financial Position	(116)	(68)
Financial Instruments	4	10
Cash Collateral Pledged	0	0
Net Amount of Liabilities	$ (112)	$ (58)