Derivative Financial Instruments and Risk Management (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2015
Derivative
Foreign currency cash flow hedges, maximum period (in years)	5 years
Deferred net losses, foreign currency exchange rate risk, to be reclassified from equity to current earnings over the next twelve months	$ 62
Commodity forward and option contracts, maximum period (in years)	5 years
Machinery, Energy & Transportation
Derivative
Deferred net losses, interest rate risk, to be reclassified from equity to current earnings over the next twelve months	4
Financial Products
Derivative
Deferred net losses, interest rate risk, to be reclassified from equity to current earnings over the next twelve months	$ 1