Financing Arrangements (Details) (USD $) In Millions, unless otherwise specified	Jul. 28, 2013	Apr. 28, 2013
Transfers and Servicing [Abstract]
Amount of accounts receivable securitization program	$ 175
Trade receivables sold without recourse	$ 104	$ 191

Amount of accounts receivable securitization program.

No definition available.

Name:	hnz_AmountOfAccountsReceivableSecuritizationProgram
Namespace Prefix:	hnz_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant