Commitments and Contingencies - Automotive Website Program (Details) (Yahoo Auto Buying Program, USD $) In Millions, unless otherwise specified	Apr. 30, 2013	Jun. 29, 2012	Sep. 29, 2014 Scenario Forecast
Other commitments
Stand-by letter of credit to guarantee performance	$ 2.0	$ 10.0	$ 0

The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.

No definition available.

Name:	us-gaap_LettersOfCreditOutstandingAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant