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Reportable Segments (Details 2) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Jun. 28, 2015 USD ($) | Jun. 29, 2014 USD ($) | Jun. 28, 2015 USD ($) item | Jun. 29, 2014 USD ($)
Revenue by client sector |  |  |  |
Threshold percentage for disclosure of revenue from a single client |  |  | 10.00% |
Revenue | $ 575,108 | $ 629,502 | $ 1,720,927 | $ 1,861,635
Revenue |  |  |  |
Revenue by client sector |  |  |  |
Number of clients exceeding threshold | item |  |  | 0 |
International |  |  |  |
Revenue by client sector |  |  |  |
Revenue | 124,951 | 141,553 | $ 445,691 | 487,056
U.S. commercial |  |  |  |
Revenue by client sector |  |  |  |
Revenue | 193,098 | 182,590 | 523,839 | 513,684
U.S. federal government |  |  |  |
Revenue by client sector |  |  |  |
Revenue | 186,578 | 204,072 | 541,613 | 580,654
U.S. state and local government |  |  |  |
Revenue by client sector |  |  |  |
Revenue | $ 70,481 | $ 101,287 | $ 209,784 | $ 280,241

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