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Revenue from Contracts with Customers (Tables) | 3 Months Ended
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Dec. 29, 2018
Revenue from Contract with Customer [Abstract] |
Contract Assets and Liabilities | Total contract assets and contract liabilities as of December 29, 2018 are as follows:
|  | December 29, 2018 |  | September 30, 2018
Unbilled receivables |  | $ | 420,093 |  |  | $ | 405,610 |
Contract advances |  | 183,855 |  |  | 152,608 |
Net contract assets |  | $ | 236,238 |  |  | $ | 253,002 |

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- Definition Tabular disclosure of contract balances and changes in contract balances. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=109196051&loc=SL49130551-203045 + Details
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