Commitments And Contingencies (Details) (USD $) In Millions, unless otherwise specified	9 Months Ended	3 Months Ended	9 Months Ended
	Sep. 30, 2011 years	Sep. 30, 2011 Settled Cases [Member]	Sep. 30, 2011 Pending Cases [Member]
Loss Contingencies [Line Items]
Number of actions settled under popcorn flavor litigation		16
Number of actions currently pending under popcorn flavor litigation			5
Number of claimants		260	13
Duration as potentially responsible party	20
Number of facilities under potentially responsible party investigation	10
Estimated maximum future costs of environmental liabilities for identified sites	$ 5
Number of liability insurers for potentially responsible party liability	3