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Revenue from Contracts with Customers (Tables) | 12 Months Ended
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Sep. 30, 2023
Revenue from Contracts with Customers [Abstract] |
Capitalized Contract Cost | The table below shows significant movements in capitalized contract acquisition costs (current and noncurrent) for the years ended September 30, 2023, 2022, and 2021 (in thousands):
| 2023 |  | 2022 |  | 2021
Balance, beginning of year | $ | 77,220 |  |  | $ | 77,836 |  |  | $ | 70,396 |
Additional capitalized contract acquisition costs | 26,960 |  |  | 37,897 |  |  | 41,719 |
Amortization of capitalized contract acquisition costs | (37,712) |  |  | (38,513) |  |  | (34,279) |
Balance, end of year | $ | 66,468 |  |  | $ | 77,220 |  |  | $ | 77,836 |
Contract with Customer, Asset and Liability | The table below shows significant movements in the deferred revenue balances (current and noncurrent) for the years ended September 30, 2023, 2022, and 2021 (in thousands):
| 2023 |  | 2022 |  | 2021
Balance, beginning of year | $ | 1,691,580 |  |  | $ | 1,489,842 |  |  | $ | 1,272,632 |
Amounts added but not recognized as revenues | 1,162,698 |  |  | 1,167,143 |  |  | 1,122,081 |
Deferred revenue acquired through acquisition of businesses | 1,800 |  |  | 10,591 |  |  | 779 |
Revenues recognized related to the opening balance of deferred revenue | (1,080,957) |  |  | (975,996) |  |  | (905,650) |
Balance, end of year | $ | 1,775,121 |  |  | $ | 1,691,580 |  |  | $ | 1,489,842 |

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- Definition Tabular disclosure of cost capitalized in obtaining or fulfilling contract with customer. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 340 -SubTopic 40 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Publisher FASB -URI https://asc.fasb.org//1943274/2147479483/340-40-50-3 + Details
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- Definition Tabular disclosure of receivable, contract asset, and contract liability from contract with customer. Includes, but is not limited to, change in contract asset and contract liability. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 10 -Publisher FASB -URI https://asc.fasb.org//1943274/2147479806/606-10-50-10 + Details
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