Basis of Presentation (Policies)	6 Months Ended
Mar. 31, 2026
Accounting Policies [Abstract]
Recently Adopted Accounting Pronouncements	Recently Adopted Accounting Pronouncements Derivatives Scope Refinements and Scope Clarification for Share-Based Noncash Consideration from a Customer in a Revenue Contract In September 2025, the FASB issued ASU 2025-07, Derivatives and Hedging (Topic 815) and Revenue from Contracts with Customers (Topic 606): Derivatives Scope Refinements and Scope Clarification for Share-Based Noncash Consideration from a Customer in a Revenue Contract, which expands the scope exceptions of the derivatives guidance and clarifies the guidance on share-based payments from a customer. Specifically, the ASU introduces a scope exception for contracts that are not exchange-traded and that have variables based on operations or activities specific to one of the parties of the contract. The ASU is effective for us in the first quarter of 2028, with early adoption permitted. We early adopted this standard prospectively in the second quarter of 2026. The adoption of this ASU did not have an impact on our consolidated financial statements and related disclosures. Pending Accounting Pronouncements Narrow-Scope Improvements for Interim Reporting In December 2025, the FASB issued ASU 2025-11, Interim Reporting (Topic 270): Narrow-Scope Improvements, which clarifies interim disclosure requirements and the applicability of Topic 270. The ASU will be effective for us in the first quarter of 2029, with early adoption permitted. We expect the adoption to result in disclosure changes only. Targeted Improvements to the Accounting for Internal-Use Software In September 2025, the FASB issued ASU 2025-06, Intangibles—Goodwill and Other—Internal-Use Software (Subtopic 350-40): Targeted Improvements to the Accounting for Internal-Use Software, which modernizes the accounting for internal-use software by eliminating project stage-based capitalization and clarifying the probable-to-complete threshold to commence the capitalization of software costs. The ASU will be effective for us in the first quarter of 2029, with early adoption permitted. The standard may be applied prospectively, retrospectively, or via a modified prospective transition method. We are currently evaluating the impact of this guidance on our consolidated financial statements and related disclosures. Measurements of Credit Losses for Accounts Receivable and Contract Assets In July 2025, the FASB issued ASU 2025-05, Financial Instruments—Credit Losses (Topic 326): Measurement of Credit Losses for Accounts Receivable and Contract Assets, which provides a practical expedient to measure credit losses on accounts receivable and contract assets. The ASU will be effective for us in the first quarter of 2027, with early adoption permitted. We are currently evaluating the impact of this guidance on our consolidated financial statements and related disclosures. Disaggregation of Income Statement Expenses 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 and in January 2025, the FASB issued ASU 2025-01, Income Statement—Reporting Comprehensive Income—Expense Disaggregation Disclosures (Subtopic 220-40): Clarifying the Effective Date. As clarified by ASU 2025-01, ASU 2024-03 will be effective for us in the fourth quarter of 2028. We expect the adoption to result in disclosure changes only. Improvements to Income Tax Disclosures In December 2023, the FASB issued ASU 2023-09, Income Taxes (Topic 740): Improvements to Income Tax Disclosures. The ASU will be effective for us in the fourth quarter of 2026. We expect the adoption to result in disclosure changes only.

Basis of Presentation (Policies)

6 Months Ended

Mar. 31, 2026

Recently Adopted Accounting Pronouncements

Derivatives Scope Refinements and Scope Clarification for Share-Based Noncash Consideration from a Customer in a Revenue Contract

In September 2025, the FASB issued ASU 2025-07, Derivatives and Hedging (Topic 815) and Revenue from Contracts with Customers (Topic 606): Derivatives Scope Refinements and Scope Clarification for Share-Based Noncash Consideration from a Customer in a Revenue Contract, which expands the scope exceptions of the derivatives guidance and clarifies the guidance on share-based payments from a customer. Specifically, the ASU introduces a scope exception for contracts that are not exchange-traded and that have variables based on operations or activities specific to one of the parties of the contract. The ASU is effective for us in the first quarter of 2028, with early adoption permitted. We early adopted this standard prospectively in the second quarter of 2026. The adoption of this ASU did not have an impact on our consolidated financial statements and related disclosures.

Pending Accounting Pronouncements

Narrow-Scope Improvements for Interim Reporting

In December 2025, the FASB issued ASU 2025-11, Interim Reporting (Topic 270): Narrow-Scope Improvements, which clarifies interim disclosure requirements and the applicability of Topic 270. The ASU will be effective for us in the first quarter of 2029, with early adoption permitted. We expect the adoption to result in disclosure changes only.

Targeted Improvements to the Accounting for Internal-Use Software

In September 2025, the FASB issued ASU 2025-06, Intangibles—Goodwill and Other—Internal-Use Software (Subtopic 350-40): Targeted Improvements to the Accounting for Internal-Use Software, which modernizes the accounting for internal-use software by eliminating project stage-based capitalization and clarifying the probable-to-complete threshold to commence the capitalization of software costs. The ASU will be effective for us in the first quarter of 2029, with early adoption permitted. The standard may be applied prospectively, retrospectively, or via a modified prospective transition method. We are currently evaluating the impact of this guidance on our consolidated financial statements and related disclosures.

Measurements of Credit Losses for Accounts Receivable and Contract Assets

In July 2025, the FASB issued ASU 2025-05, Financial Instruments—Credit Losses (Topic 326): Measurement of Credit Losses for Accounts Receivable and Contract Assets, which provides a practical expedient to measure credit losses on accounts receivable and contract assets. The ASU will be effective for us in the first quarter of 2027, with early adoption permitted. We are currently evaluating the impact of this guidance on our consolidated financial statements and related disclosures.

Disaggregation of Income Statement Expenses

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 and in January 2025, the FASB issued ASU 2025-01, Income Statement—Reporting Comprehensive Income—Expense Disaggregation Disclosures (Subtopic 220-40): Clarifying the Effective Date. As clarified by ASU 2025-01, ASU 2024-03 will be effective for us in the fourth quarter of 2028. We expect the adoption to result in disclosure changes only.

Improvements to Income Tax Disclosures

In December 2023, the FASB issued ASU 2023-09, Income Taxes (Topic 740): Improvements to Income Tax Disclosures. The ASU will be effective for us in the fourth quarter of 2026. We expect the adoption to result in disclosure changes only.