Summary of Significant Accounting Policies (Policies)	9 Months Ended
Jun. 30, 2024
Accounting Policies [Abstract]
Interim Financial Statements	Interim Financial Statements The accompanying unaudited condensed consolidated financial statements have been prepared in accordance with United States generally accepted accounting principles (“U.S. GAAP”) for interim financial information and with the instructions to Form 10-Q and Article 10 of Regulation S-X. Accordingly, they do not include all the information and notes required by U.S. GAAP for complete financial statements. In the opinion of management, all adjustments (consisting of normal recurring accruals) considered necessary for a fair presentation have been included. Operating results for the three and nine months ended June 30, 2024 are not necessarily indicative of the results that may be expected for the fiscal year ending September 30, 2024. The consolidated balance sheet at September 30, 2023 has been derived from the audited consolidated financial statements at that date but does not include all the information and notes required by U.S. GAAP for complete financial statements. For further information, refer to the consolidated financial statements and notes thereto included in our Annual Report on Form 10-K for the fiscal year ended September 30, 2023 (File No. 001-32502).
Basis of Consolidation	Basis of Consolidation The accompanying financial statements present the consolidated accounts of all entities in which the Company has a controlling voting interest and/or variable interest required to be consolidated in accordance with U.S. GAAP. All intercompany balances and transactions have been eliminated. Financial Accounting Standards Board (“FASB”) Accounting Standards Codification (“ASC”) Topic 810, Consolidation (“ASC 810”) requires the Company first evaluate its investments to determine if any investments qualify as a variable interest entity (“VIE”). A VIE is consolidated if the Company is deemed to be the primary beneficiary of the VIE, which is the party involved with the VIE that has both (i) the power to control the most significant activities of the VIE and (ii) either the obligation to absorb losses or the right to receive benefits that could potentially be significant to the VIE. If an entity is not deemed to be a VIE, the Company consolidates the entity if the Company has a controlling voting interest. As of June 30, 2024 and September 30, 2023, there were approximately $72 million and $5 million of assets and $2 million and $2 million of liabilities, respectively, related to VIEs included in our condensed consolidated balance sheets.
Income Taxes	Income Taxes The Company uses the estimated annual effective tax rate method in computing its interim tax provision. Certain items, including those deemed to be unusual and infrequent are excluded from the estimated annual effective tax rate. In such cases, the actual tax expense or benefit is reported in the same period as the related item. Certain tax effects are also not reflected in the estimated annual effective tax rate, primarily certain changes in the realizability of deferred tax assets and uncertain tax positions, and are recorded in the period in which the change occurs. Global Intangible Low-Taxed Income (“GILTI”) imposes U.S. taxes on the excess of a deemed return on tangible assets of certain foreign subsidiaries. The Company made an election to recognize GILTI tax in the specific period in which it occurs.
New Accounting Pronouncements	New Accounting Pronouncements Accounting Pronouncements Not Yet Adopted In November 2023, the FASB issued ASU 2023-07, Segment Reporting (Topic 280): Improvements to Reportable Segment Disclosures. The amendment enhances reportable segment disclosure requirements, primarily by requiring enhanced disclosures about significant segment expenses, reporting for interim periods, and Chief Operating Decision Maker (“CODM”) related information. The amendments in this ASU are effective for fiscal years beginning after December 15, 2023 and interim periods within fiscal years beginning after December 15, 2024. The Company is in the process of evaluating the effect that the adoption of these standards will have on its consolidated financial statements. In December 2023, the FASB issued ASU 2023-09, Income Taxes (Topic 740): Improvements to Income Tax Disclosures. The amendment enhances income tax disclosure requirements, by requiring enhanced disclosures on the income tax rate reconciliation and income taxes paid. The amendments in this ASU are effective for fiscal years beginning after December 15, 2024. The Company is in the process of evaluating the effect that the adoption of these standards will have on its consolidated financial statements.

Summary of Significant Accounting Policies (Policies)

9 Months Ended

Jun. 30, 2024

The accompanying unaudited condensed consolidated financial statements have been prepared in accordance with United States generally accepted accounting principles (“U.S. GAAP”) for interim financial information and with the instructions to Form 10-Q and Article 10 of Regulation S-X. Accordingly, they do not include all the information and notes required by U.S. GAAP for complete financial statements. In the opinion of management, all adjustments (consisting of normal recurring accruals) considered necessary for a fair presentation have been included. Operating results for the three and nine months ended June 30, 2024 are not necessarily indicative of the results that may be expected for the fiscal year ending September 30, 2024.

The consolidated balance sheet at September 30, 2023 has been derived from the audited consolidated financial statements at that date but does not include all the information and notes required by U.S. GAAP for complete financial statements.

For further information, refer to the consolidated financial statements and notes thereto included in our Annual Report on Form 10-K for the fiscal year ended September 30, 2023 (File No. 001-32502).

Basis of Consolidation

The accompanying financial statements present the consolidated accounts of all entities in which the Company has a controlling voting interest and/or variable interest required to be consolidated in accordance with U.S. GAAP. All intercompany balances and transactions have been eliminated.

Financial Accounting Standards Board (“FASB”) Accounting Standards Codification (“ASC”) Topic 810, Consolidation (“ASC 810”) requires the Company first evaluate its investments to determine if any investments qualify as a variable interest entity (“VIE”). A VIE is consolidated if the Company is deemed to be the primary beneficiary of the VIE, which is the party involved with the VIE that has both (i) the power to control the most significant activities of the VIE and (ii) either the obligation to absorb losses or the right to receive benefits that could potentially be significant to the VIE. If an entity is not deemed to be a VIE, the Company consolidates the entity if the Company has a controlling voting interest. As of June 30, 2024 and September 30, 2023, there were approximately $72 million and $5 million of assets and $2 million and $2 million of liabilities, respectively, related to VIEs included in our condensed consolidated balance sheets.

Income Taxes

The Company uses the estimated annual effective tax rate method in computing its interim tax provision. Certain items, including those deemed to be unusual and infrequent are excluded from the estimated annual effective tax rate. In such cases, the actual tax expense or benefit is reported in the same period as the related item. Certain tax effects are also not reflected in the estimated annual effective tax rate, primarily certain changes in the realizability of deferred tax assets and uncertain tax positions, and are recorded in the period in which the change occurs.

Global Intangible Low-Taxed Income (“GILTI”) imposes U.S. taxes on the excess of a deemed return on tangible assets of certain foreign subsidiaries. The Company made an election to recognize GILTI tax in the specific period in which it occurs.

New Accounting Pronouncements

Accounting Pronouncements Not Yet Adopted

In November 2023, the FASB issued ASU 2023-07, Segment Reporting (Topic 280): Improvements to Reportable Segment Disclosures. The amendment enhances reportable segment disclosure requirements, primarily by requiring enhanced disclosures about significant segment expenses, reporting for interim periods, and Chief Operating Decision Maker (“CODM”) related information. The amendments in this ASU are effective for fiscal years beginning after December 15, 2023 and interim periods within fiscal years beginning after December 15, 2024. The Company is in the process of evaluating the effect that the adoption of these standards will have on its consolidated financial statements.

In December 2023, the FASB issued ASU 2023-09, Income Taxes (Topic 740): Improvements to Income Tax Disclosures. The amendment enhances income tax disclosure requirements, by requiring enhanced disclosures on the income tax rate reconciliation and income taxes paid. The amendments in this ASU are effective for fiscal years beginning after December 15, 2024. The Company is in the process of evaluating the effect that the adoption of these standards will have on its consolidated financial statements.