Property, Plant and Equipment - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended			3 Months Ended	12 Months Ended	3 Months Ended	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2010	Dec. 31, 2012 2012-2014 Restructuring Program	Mar. 31, 2012 Developing Markets	Dec. 31, 2012 Developing Markets	Mar. 31, 2012 Developing Markets Buildings and Building Improvements	Dec. 31, 2010 Biscuit Plant and Related Property, Plant and Equipment in France	Oct. 02, 2012 Kraft Foods Group
Property, Plant and Equipment [Line Items]
Property, plant and equipment, divested with the Spin-Off								$ 4,211
Divested in property				72	72	17
Pretax gain loss within selling, general and administrative expenses				55	55
Asset impairment charges	$ 126	$ 55	$ 18				$ 12