Summary of Significant Accounting Policies (Policies)	9 Months Ended
Jun. 30, 2026
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, 2026 are not necessarily indicative of the results that may be expected for the fiscal year ending September 30, 2026. The consolidated balance sheet at September 30, 2025 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, 2025 (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 financial interest required to be consolidated in accordance with U.S. GAAP. All intercompany balances and transactions have been eliminated.
Noncontrolling Interests	Noncontrolling Interests Interests held by third parties in consolidated subsidiaries are presented as noncontrolling interests, which represent the noncontrolling shareholders’ interests in the underlying net assets of the Company’s consolidated subsidiaries. Noncontrolling interests that are not redeemable are reported in the equity section of the Consolidated Balance Sheets. Noncontrolling interests, where the Company may be required to redeem the noncontrolling interest under contractual redemption requirements that are not solely within the control of the Company, are reported in the Consolidated Balance Sheets between liabilities and equity, as redeemable noncontrolling interests. The Company adjusts the redeemable noncontrolling interests to the higher of the current redemption value or the carrying value of the interests, the capital contributed by the third party adjusted for the noncontrolling interest’s share of net income (loss) and distributions, on each balance sheet date with changes in redemption value recognized as an adjustment to retained earnings attributable to common shareholders.
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 December 2023, the Financial Accounting Standards Board (“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 will include the required disclosures in its Annual Report on Form 10-K for the fiscal year ending September 30, 2026. In November 2024, the FASB issued ASU 2024-03, Income Statement—Reporting Comprehensive Income—Expense Disaggregation Disclosures (Subtopic 220-40): Disaggregation of Income Statement Expenses. The amendment requires new financial statement disclosures to provide disaggregated information for certain types of expenses, including purchases of inventory, employee compensation, depreciation, and amortization in commonly presented expense captions such as cost of revenue and selling, general and administrative expenses. The amendments in this ASU are effective for our fiscal year ending September 30, 2028, and interim periods within our fiscal year ending September 30, 2029. The Company is in the process of evaluating the effect that the adoption of these standards will have on its consolidated financial statements. In September 2025, the FASB issued ASU 2025-06, Internal-Use Software (Subtopic 350-40): Targeted Improvements to the Accounting for Internal-Use Software. The amendment aligns internal-use software capitalization practices with agile development methodologies and an external-use software model by introducing updated capitalization criteria and removing existing project staging guidance. The amendments in this ASU are effective for our fiscal year ending September 30, 2029. 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, 2026

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, 2026 are not necessarily indicative of the results that may be expected for the fiscal year ending September 30, 2026.

The consolidated balance sheet at September 30, 2025 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, 2025 (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 financial interest required to be consolidated in accordance with U.S. GAAP. All intercompany balances and transactions have been eliminated.

Noncontrolling Interests

Interests held by third parties in consolidated subsidiaries are presented as noncontrolling interests, which represent the noncontrolling shareholders’ interests in the underlying net assets of the Company’s consolidated subsidiaries. Noncontrolling interests that are not redeemable are reported in the equity section of the Consolidated Balance Sheets.

Noncontrolling interests, where the Company may be required to redeem the noncontrolling interest under contractual redemption requirements that are not solely within the control of the Company, are reported in the Consolidated Balance Sheets between liabilities and equity, as redeemable noncontrolling interests. The Company adjusts the redeemable noncontrolling interests to the higher of the current redemption value or the carrying value of the interests, the capital contributed by the third party adjusted for the noncontrolling interest’s share of net income (loss) and distributions, on each balance sheet date with changes in redemption value recognized as an adjustment to retained earnings attributable to common shareholders.

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 December 2023, the Financial Accounting Standards Board (“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 will include the required disclosures in its Annual Report on Form 10-K for the fiscal year ending September 30, 2026.

In November 2024, the FASB issued ASU 2024-03, Income Statement—Reporting Comprehensive Income—Expense Disaggregation Disclosures (Subtopic 220-40): Disaggregation of Income Statement Expenses. The amendment requires new financial statement disclosures to provide disaggregated information for certain types of expenses, including purchases of inventory, employee compensation, depreciation, and amortization in commonly presented expense captions such as cost of revenue and selling, general and administrative expenses. The amendments in this ASU are effective for our fiscal year ending September 30, 2028, and interim periods within our fiscal year ending September 30, 2029. The Company is in the process of evaluating the effect that the adoption of these standards will have on its consolidated financial statements.

In September 2025, the FASB issued ASU 2025-06, Internal-Use Software (Subtopic 350-40): Targeted Improvements to the Accounting for Internal-Use Software. The amendment aligns internal-use software capitalization practices with agile development methodologies and an external-use software model by introducing updated capitalization criteria and removing existing project staging guidance. The amendments in this ASU are effective for our fiscal year ending September 30, 2029. The Company is in the process of evaluating the effect that the adoption of these standards will have on its consolidated financial statements.