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Employee Benefit Plans, Pensions, and Other Retiree Benefits 401(k) Plan (Details) (USD $) In Millions, unless otherwise specified | 12 Months Ended
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Sep. 30, 2011 weeks years | Oct. 01, 2010 | Oct. 02, 2009
Defined Benefit Plan Disclosure [Line Items] |  |  |
Minimum Age Requirement | 21 |  |
Contribution percentage of employee earnings to retirement plan | 4.00% |  |
Contribution Of Common Shares To Savings And Retirement Plans shares | 0.2 | 0.3 | 0.7
Contribution Of Common Shares To Savings And Retirement Plans | $ 5.5 | $ 4.8 | $ 4.6

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- Definition Contribution Of Common Shares To Savings And Retirement Plans Shares (401k) + Details
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- Definition Contribution Percentage Of Employee Earnings To Retirement Plan + Details
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- Definition Minimum Age Requirement + Details
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- Definition 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. + Details
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- Definition The amount of the cost recognized during the period for defined contribution plans. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 11 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 70 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6414718&loc=d3e28014-114942 + Details
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