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Other investments - Summarized financial information of Heinz Holding (Detail) (Other Investments [Member], Heinz Holding [Member], USD $)
In Millions, unless otherwise specified
2 Months Ended
Jul. 28, 2013
Other Investments [Member] | Heinz Holding [Member]
 
Schedule of Equity Method Investments [Line Items]  
Assets $ 38,464
Liabilities 21,862
Sales 1,527
Net earnings (loss) $ (76)