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Common Stock (Narrative) (Details) | 12 Months Ended
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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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- Definition 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 + Details
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