Note 3. Fair Values of Assets and Liabilities (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
Nov. 02, 2013
Note 3. Fair Values of Assets and Liabilities (Details) [Line Items]
Gain (Loss) on Sale of Equity Investments	$ 0.1
Issuer E [Member] \| Convertible Note Receivalbe [Member]
Note 3. Fair Values of Assets and Liabilities (Details) [Line Items]
Other than Temporary Impairment Losses, Investments	0.3
Equity Investments and Promissory Notes Receivable [Member]
Note 3. Fair Values of Assets and Liabilities (Details) [Line Items]
Investment Owned, at Cost	$ 4.4

The difference between the carrying value and the sale price of equity securities, not separately or otherwise categorized as trading or available-for-sale. This element includes investments in which the entity holds a small ownership stake (generally, less than 20% of the shares outstanding) and cannot exert significant influence.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 28

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 942

-SubTopic 225

-Section S99

-Paragraph 1

-Subparagraph (SX 210.9-04.13(h))

-URI http://asc.fasb.org/extlink&oid=6879574&loc=d3e536633-122882

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration