Segment Information (Details 3) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Reconciliation of Consolidated profit (loss) before taxes
Consolidated profit before taxes	$ 1,342	$ 1,127
Reportable Segments
Reconciliation of Consolidated profit (loss) before taxes
Consolidated profit before taxes	1,904	1,551
All Other operating segments
Reconciliation of Consolidated profit (loss) before taxes
Consolidated profit before taxes	235	205
Cost Centers
Reconciliation of Consolidated profit (loss) before taxes
Consolidated profit before taxes	52	40
Corporate Costs
Reconciliation of Consolidated profit (loss) before taxes
Consolidated profit before taxes	(366)	(350)
Timing
Reconciliation of Consolidated profit (loss) before taxes
Consolidated profit before taxes	(41)	54
Restructuring Costs
Reconciliation of Consolidated profit (loss) before taxes
Consolidated profit before taxes	(149)	(7)
Inventory/cost of sales
Reconciliation of Consolidated profit (loss) before taxes
Consolidated profit before taxes	14	(36)
Postretirement Benefits Expense
Reconciliation of Consolidated profit (loss) before taxes
Consolidated profit before taxes	(102)	(165)
Financing Costs
Reconciliation of Consolidated profit (loss) before taxes
Consolidated profit before taxes	(114)	(124)
Equity in Profit/Loss of Unconsolidated Affiliated Companies
Reconciliation of Consolidated profit (loss) before taxes
Consolidated profit before taxes	(1)	(1)
Currency
Reconciliation of Consolidated profit (loss) before taxes
Consolidated profit before taxes	(26)	15
Other Income Expense Methodology Differences
Reconciliation of Consolidated profit (loss) before taxes
Consolidated profit before taxes	(60)	(52)
Other
Reconciliation of Consolidated profit (loss) before taxes
Consolidated profit before taxes	(4)	(3)
Business
Reconciliation of Consolidated profit (loss) before taxes
Consolidated profit before taxes	2,139	1,756
Machinery, Energy & Transportation | Reportable Segments
Reconciliation of Consolidated profit (loss) before taxes
Consolidated profit before taxes	1,664	1,278
Machinery, Energy & Transportation | Business
Reconciliation of Consolidated profit (loss) before taxes
Consolidated profit before taxes	1,102	837
Machinery, Energy & Transportation | Business | Reportable Segments
Reconciliation of Consolidated profit (loss) before taxes
Consolidated profit before taxes	1,664	1,278
Machinery, Energy & Transportation | Business | All Other operating segments
Reconciliation of Consolidated profit (loss) before taxes
Consolidated profit before taxes	235	205
Machinery, Energy & Transportation | Business | Cost Centers
Reconciliation of Consolidated profit (loss) before taxes
Consolidated profit before taxes	52	40
Machinery, Energy & Transportation | Business | Corporate Costs
Reconciliation of Consolidated profit (loss) before taxes
Consolidated profit before taxes	(366)	(350)
Machinery, Energy & Transportation | Business | Timing
Reconciliation of Consolidated profit (loss) before taxes
Consolidated profit before taxes	(41)	54
Machinery, Energy & Transportation | Business | Restructuring Costs
Reconciliation of Consolidated profit (loss) before taxes
Consolidated profit before taxes	(149)	(7)
Machinery, Energy & Transportation | Business | Inventory/cost of sales
Reconciliation of Consolidated profit (loss) before taxes
Consolidated profit before taxes	14	(36)
Machinery, Energy & Transportation | Business | Postretirement Benefits Expense
Reconciliation of Consolidated profit (loss) before taxes
Consolidated profit before taxes	(102)	(165)
Machinery, Energy & Transportation | Business | Financing Costs
Reconciliation of Consolidated profit (loss) before taxes
Consolidated profit before taxes	(114)	(124)
Machinery, Energy & Transportation | Business | Equity in Profit/Loss of Unconsolidated Affiliated Companies
Reconciliation of Consolidated profit (loss) before taxes
Consolidated profit before taxes	(1)	(1)
Machinery, Energy & Transportation | Business | Currency
Reconciliation of Consolidated profit (loss) before taxes
Consolidated profit before taxes	(26)	15
Machinery, Energy & Transportation | Business | Other Income Expense Methodology Differences
Reconciliation of Consolidated profit (loss) before taxes
Consolidated profit before taxes	(60)	(52)
Machinery, Energy & Transportation | Business | Other
Reconciliation of Consolidated profit (loss) before taxes
Consolidated profit before taxes	(4)	(20)
Financial Products | Business
Reconciliation of Consolidated profit (loss) before taxes
Consolidated profit before taxes	240	290
Financial Products | Business | Reportable Segments
Reconciliation of Consolidated profit (loss) before taxes
Consolidated profit before taxes	240	273
Financial Products | Business | All Other operating segments
Reconciliation of Consolidated profit (loss) before taxes
Consolidated profit before taxes	0	0
Financial Products | Business | Cost Centers
Reconciliation of Consolidated profit (loss) before taxes
Consolidated profit before taxes	0	0
Financial Products | Business | Corporate Costs
Reconciliation of Consolidated profit (loss) before taxes
Consolidated profit before taxes	0	0
Financial Products | Business | Timing
Reconciliation of Consolidated profit (loss) before taxes
Consolidated profit before taxes	0	0
Financial Products | Business | Restructuring Costs
Reconciliation of Consolidated profit (loss) before taxes
Consolidated profit before taxes	0	0
Financial Products | Business | Inventory/cost of sales
Reconciliation of Consolidated profit (loss) before taxes
Consolidated profit before taxes	0	0
Financial Products | Business | Postretirement Benefits Expense
Reconciliation of Consolidated profit (loss) before taxes
Consolidated profit before taxes	0	0
Financial Products | Business | Financing Costs
Reconciliation of Consolidated profit (loss) before taxes
Consolidated profit before taxes	0	0
Financial Products | Business | Equity in Profit/Loss of Unconsolidated Affiliated Companies
Reconciliation of Consolidated profit (loss) before taxes
Consolidated profit before taxes	0	0
Financial Products | Business | Currency
Reconciliation of Consolidated profit (loss) before taxes
Consolidated profit before taxes	0	0
Financial Products | Business | Other Income Expense Methodology Differences
Reconciliation of Consolidated profit (loss) before taxes
Consolidated profit before taxes	0	0
Financial Products | Business | Other
Reconciliation of Consolidated profit (loss) before taxes
Consolidated profit before taxes	$ 0	$ 17