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Accounts Receivable, Net | 3 Months Ended
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Dec. 31, 2021
Receivables [Abstract] |
Accounts Receivable, Net | ACCOUNTS RECEIVABLE, NET
Table 12: Details of Accounts Receivable, Net
| December 31, 2021 |  | September 30, 2021
| (in thousands)
Billed and billable receivables | $ | 717,804 |  |  | $ | 718,728 |
Unbilled receivables | 139,348 |  |  | 124,135 |
Allowance for credit losses | (7,742) |  |  | (8,044) |
Accounts receivable, net | $ | 849,410 |  |  | $ | 834,819 |

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- Definition The entire disclosure for accounts receivable, contract receivable, receivable held-for-sale, and nontrade receivable. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -URI http://asc.fasb.org/topic&trid=2196771 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -URI http://asc.fasb.org/topic&trid=82887179 + Details
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- References No definition available. + Details
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