Segment Information (Details 3) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Reconciliation of Consolidated profit (loss) before taxes
Consolidated sales and revenues	$ (12,859)	$ (9,822)
Reportable Segments
Reconciliation of Consolidated profit (loss) before taxes
Consolidated sales and revenues	(12,936)	(9,877)
All Other operating segments
Reconciliation of Consolidated profit (loss) before taxes
Consolidated sales and revenues		(37)
Other
Reconciliation of Consolidated profit (loss) before taxes
Consolidated sales and revenues		92
Machinery, Energy & Transportation | Reportable Segments
Reconciliation of Consolidated profit (loss) before taxes
Consolidated sales and revenues	$ (12,143)	(9,117)
Business | Machinery, Energy & Transportation
Reconciliation of Consolidated profit (loss) before taxes
Consolidated sales and revenues		(9,130)
Business | Machinery, Energy & Transportation | Reportable Segments
Reconciliation of Consolidated profit (loss) before taxes
Consolidated sales and revenues		(9,117)
Business | Machinery, Energy & Transportation | All Other operating segments
Reconciliation of Consolidated profit (loss) before taxes
Consolidated sales and revenues		(37)
Business | Machinery, Energy & Transportation | Other
Reconciliation of Consolidated profit (loss) before taxes
Consolidated sales and revenues		24
Business | Financial Products
Reconciliation of Consolidated profit (loss) before taxes
Consolidated sales and revenues		(777)
Business | Financial Products | Reportable Segments
Reconciliation of Consolidated profit (loss) before taxes
Consolidated sales and revenues		(760)
Business | Financial Products | All Other operating segments
Reconciliation of Consolidated profit (loss) before taxes
Consolidated sales and revenues		0
Business | Financial Products | Other
Reconciliation of Consolidated profit (loss) before taxes
Consolidated sales and revenues		(17)
Consolidating Adjustments
Reconciliation of Consolidated profit (loss) before taxes
Consolidated sales and revenues		85
Consolidating Adjustments | Reportable Segments
Reconciliation of Consolidated profit (loss) before taxes
Consolidated sales and revenues		0
Consolidating Adjustments | All Other operating segments
Reconciliation of Consolidated profit (loss) before taxes
Consolidated sales and revenues		0
Consolidating Adjustments | Other
Reconciliation of Consolidated profit (loss) before taxes
Consolidated sales and revenues		$ 85