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Accounts Receivable, Net (Tables) | 12 Months Ended
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Sep. 30, 2018
Text Block [Abstract] |
Accounts Receivable, Net | Accounts receivable, net consists of the following:
|  | As of September 30, |
|  | 2018 |  |  | 2017 |
Accounts receivable — billed |  | $ | 728,716 |  |  | $ | 664,099 |
Accounts receivable — unbilled |  |  | 263,997 |  |  |  | 229,695 |
Less — allowances |  |  | (21,211 | ) |  |  | (28,726 | )
Accounts receivable, net |  | $ | 971,502 |  |  | $ | 865,068 |

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- Definition Net accounts receivable. + References No definition available. + Details
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Period Type: | duration

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- References No definition available. + Details
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Namespace Prefix: | us-gaap_
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Period Type: | duration