Investments and Fair Value Measurements (Details 3) (Short-term investments, Trading securities, USD $) In Millions, unless otherwise specified	Mar. 31, 2012	Jul. 02, 2011
Trading securities related to deferred compensation plan
Deferred compensation plan assets	$ 4.7	$ 5.7
Debt securities
Trading securities related to deferred compensation plan
Deferred compensation plan assets	0.9	0.9
Money market instruments and funds
Trading securities related to deferred compensation plan
Deferred compensation plan assets	0.5	0.5
Marketable equity investments
Trading securities related to deferred compensation plan
Deferred compensation plan assets	$ 3.3	$ 4.3

Carrying amount as of the balance sheet date of assets held under deferred compensation agreements.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 17

-Article 5

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.17)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Name:	us-gaap_DeferredCompensationPlanAssets
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant