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Common Stock (Narrative) (Details)	12 Months Ended
	Sep. 30, 2016 item / shares shares	Oct. 02, 2015 shares
Class of Stock [Line Items]
Percentage of Class Dividends on Class A Common Stock Relative to Class B Common Stock	110.00%
Ratio of Class B Common Stock Convertible to Class A Common Stock | shares	1
Shares converted | shares	376	0
Class A [Member]
Class of Stock [Line Items]
Percentage of Members of the Board Elected by Class of Stock	25.00%
Vote Per Share Owned by Class of Stock | item / shares	1
Class B [Member]
Class of Stock [Line Items]
Percentage of Members of the Board Elected by Class of Stock	75.00%
Vote Per Share Owned by Class of Stock | item / shares	10

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Percentage Of Members Of The Board Elected By Class Of Stock

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- Definition

Percetnage Of Cash Dividends On Class A Common Stock Relative To Class B Common Stock

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- Definition

Ratio Of Class B Common Stock Convertible To Class A Common Stock

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- Definition

Votes Per Share Owned By Class Of Stock

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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The number of shares converted in a noncash (or part noncash) transaction. Noncash is defined as transactions during a period that do not result in cash receipts or cash payments in the period. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 50
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4332-108586

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4304-108586

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 50
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4313-108586

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