Commitments and Contingent Liabilities (Loss Contingencies) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2005	Dec. 31, 2004	Jan. 31, 2012
PFOA Matters [Member]
Loss Contingencies [Line Items]
Loss Contingency Accrual, at Carrying Value	$ 15
PFOA Matters: Drinking Water Actions [Member]
Loss Contingencies [Line Items]
Binding settlement agreement, class size			80,000
Plaintiffs attorney fees		23
Community health project		70
Escrow Deposit				1
Loss contingency, potential additional loss	235
Lawsuits alleging personal injury	25
Lawsuits alleging wrongful death	1
Monsanto Patent Dispute [Member]
Loss Contingencies [Line Items]
Jury awarded damages	$ 1,000
Potential multiplier of jury verdict	3