Restructuring and Related Implementation Charges (Details 1) (Two Thousand Twelve Restructuring Program [Member], USD $) In Millions, unless otherwise specified	3 Months Ended	9 Months Ended	12 Months Ended
	Sep. 30, 2013	Sep. 30, 2013	Sep. 30, 2013
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Incurred Cost	$ 30	$ 198
Restructuring And Related Cost, Incurred Cost, After Tax	22	153
Restructuring and Related Cost, Cost Incurred to Date			287
Restructuring And Related Cost, Incurred Cost to Date, After Tax			223
One-time Termination Benefits [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Incurred Cost	5	91
Restructuring and Related Cost, Cost Incurred to Date			169
Incremental Depreciation [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Incurred Cost	5	20
Restructuring and Related Cost, Cost Incurred to Date			20
Asset Impairment [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Incurred Cost	0	1
Restructuring and Related Cost, Cost Incurred to Date			1
Other Restructuring [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Incurred Cost	20	86
Restructuring and Related Cost, Cost Incurred to Date			97
Pet Nutrition [Member]
Restructuring Cost and Reserve [Line Items]
Expected Percent Of Total Restructuring Charges Related To Segment for the duration of the program	10.00%	10.00%	10.00%
Percent Of Total Restructuring Charges Related To Segment for the period	29.00%	8.00%
PercentOfRestructuringChargesReportableSegmentProgramChargesIncurredToDate			6.00%
Corporate [Member]
Restructuring Cost and Reserve [Line Items]
Expected Percent Of Total Restructuring Charges Related To Segment for the duration of the program	40.00%	40.00%	40.00%
Percent Of Total Restructuring Charges Related To Segment for the period	30.00%	27.00%
PercentOfRestructuringChargesReportableSegmentProgramChargesIncurredToDate			31.00%
North America [Member]
Restructuring Cost and Reserve [Line Items]
Expected Percent Of Total Restructuring Charges Related To Segment for the duration of the program	15.00%	15.00%	15.00%
Percent Of Total Restructuring Charges Related To Segment for the period	13.00%	20.00%
PercentOfRestructuringChargesReportableSegmentProgramChargesIncurredToDate			14.00%
Latin America [Member]
Restructuring Cost and Reserve [Line Items]
Expected Percent Of Total Restructuring Charges Related To Segment for the duration of the program	5.00%	5.00%	5.00%
Percent Of Total Restructuring Charges Related To Segment for the period	6.00%	6.00%
PercentOfRestructuringChargesReportableSegmentProgramChargesIncurredToDate			4.00%
Europe/South Pacific [Member]
Restructuring Cost and Reserve [Line Items]
Expected Percent Of Total Restructuring Charges Related To Segment for the duration of the program	20.00%	20.00%	20.00%
Percent Of Total Restructuring Charges Related To Segment for the period	22.00%	35.00%
PercentOfRestructuringChargesReportableSegmentProgramChargesIncurredToDate			42.00%
Asia [Member]
Restructuring Cost and Reserve [Line Items]
Expected Percent Of Total Restructuring Charges Related To Segment for the duration of the program	5.00%	5.00%	5.00%
Africa/Eurasia [Member]
Restructuring Cost and Reserve [Line Items]
Expected Percent Of Total Restructuring Charges Related To Segment for the duration of the program	5.00%	5.00%	5.00%
Percent Of Total Restructuring Charges Related To Segment for the period		4.00%
PercentOfRestructuringChargesReportableSegmentProgramChargesIncurredToDate			3.00%
Cost of Sales [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Incurred Cost	8	26
Selling, General and Administrative Expenses [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Incurred Cost	9	31
Other (Income) Expense, Net [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Incurred Cost	$ 13	$ 141