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Basis of Presentation (Policies) | 6 Months Ended
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Sep. 30, 2025
Organization, Consolidation and Presentation of Financial Statements [Abstract] |
Basis of Presentation | The accompanying unaudited condensed consolidated financial statements include the accounts of the Company and its subsidiaries that are majority-owned or otherwise controlled by the Company, and have been prepared in accordance with accounting principles generally accepted in the United States (“U.S. GAAP”) and the rules and regulations of the U.S. Securities and Exchange Commission (the “SEC”) and should be read in conjunction with the information contained in the Company's Annual Report on Form 10-K for the year ended March 31, 2025. The interim period unaudited condensed consolidated financial statements are presented as described below. Certain information and disclosures normally required for annual financial statements have been condensed or omitted pursuant to U.S. GAAP and SEC rules and regulations. In the opinion of management, all adjustments considered necessary for fair presentation of the results of the interim periods presented have been included.
Reclassification | Certain amounts reported in the Company's prior fiscal year condensed consolidated financial statements have been reclassified to conform to the current year presentation
Investments | Investments As of September 30, 2025 and March 31, 2025, respectively, the total of equity and other investments related to unconsolidated entities included in other long-term assets of the Company’s condensed consolidated balance sheet were $109 million and $90 million.
Accounting Estimates | Accounting Estimates The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets, liabilities, revenue and expenses, as well as the disclosure of contingent assets and liabilities at the date of the financial statements or during the relevant reporting periods (as applicable). The Company bases its estimates on historical and forward-looking assumptions that it believes are reasonable and appropriate. Actual results may differ materially from those estimates. Estimates are used for, but not limited to, revenue recognition including the profitability of long-term contracts and cost accruals, the provision for claimed costs, fair value measurements, the valuation and expected lives of acquired intangible assets, incentive compensation, income taxes including reserves for uncertain tax positions, postretirement obligations and contingencies. See Note 2, “Summary of Significant Accounting Policies” to the Company’s consolidated financial statements included in the Annual Report on Form 10-K for the year ended March 31, 2025 for further details on significant estimates and assumptions used.
Recently Issued Accounting Pronouncements Not Yet Adopted | Recently Issued Accounting Pronouncements Not Yet Adopted In December 2023, the Financial Accounting Standards Board (the “FASB”) issued ASU 2023-09, Improvements to Income Tax Disclosures. The standard includes amendments that enhance annual income tax disclosures, primarily through standardization and disaggregation of rate reconciliation categories and income taxes paid by jurisdiction. The Company is required to adopt this standard in its Fiscal 2026 Form 10-K and does not expect it to have a material impact on its consolidated financial statements and related disclosures. In November 2024, the FASB issued ASU 2024-03, Disaggregation of Income Statement Expenses, which is intended to enhance transparency into the nature and function of certain expenses as specified by the ASU. The guidance does not change the expense captions an entity presents on the face of the income statement; rather, it requires public business entities to provide disaggregated disclosures of certain expense captions in the notes to the financial statements. The ASU is effective for annual periods beginning after December 15, 2026, and interim periods within fiscal years beginning after December 15, 2027, and can be applied retrospectively or prospectively. The Company is currently assessing the impact of this update; however, its adoption will affect only the Company’s disclosures, with no impacts to its financial conditions or results of operations. In September 2025, the FASB issued ASU 2025-06, Targeted Improvements to the Accounting for Internal-Use Software, to modernize the accounting for and disclosure of internal-use software costs. The guidance removes all references to project stages, defines the threshold to begin capitalizing costs, and clarifies the disclosure requirements of capitalized software costs. The ASU is effective for annual periods beginning after December 15, 2027, and interim periods within those fiscal years, and can be applied retrospectively, prospectively, or on a modified transition approach. Early adoption is permitted. The Company is currently assessing the impact of this update.
Revenue | We disaggregate our revenue from contracts with customers by contract type and by customer type, as well as by whether the Company acts as prime contractor or sub-contractor, as we believe these categories best depict how the nature, amount, timing and uncertainty of our revenue and cash flows are affected by economic factors. Remaining performance obligations represent the transaction price of exercised contracts for which work has not yet been performed, irrespective of whether funding has or has not been authorized and appropriated as of the date of exercise. Remaining performance obligations exclude negotiated but unexercised options, the unfunded value of expired contracts, and certain variable consideration which the Company does not expect to recognize as revenue.

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