Venezuela - Foreign Currency and Inflation (Details) (USD $) In Millions	Jul. 27, 2011
Venezuela - Foreign Currency and Inflation [Abstract]
Monetary assets, net of monetary liabilities, subject to an earnings impact from exchange rate movements for Venezuelan subsidiary under highly inflationary accounting	$ 72.4

Name:

hnz_MonetaryAssetsNetOfMonetaryLiabilitiesSubjectToEarningsImpactFromExchangeRateMovementsUnderHighlyInflationaryAccounting

Namespace Prefix:

hnz

Data Type:

xbrli:monetaryItemType

Balance Type:

debit

Period Type:

instant