Basis of Presentation	6 Months Ended
Basis of Presentation	Sep. 30, 2024
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of Presentation	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 (“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, 2024. 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 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. The Company’s fiscal year ends on March 31 and, unless otherwise noted, references to fiscal year or fiscal are for fiscal years ended March 31. The results of operations for the six months ended September 30, 2024 are not necessarily indicative of results to be expected for the full fiscal year. The condensed consolidated financial statements and notes of the Company include its subsidiaries, and other entities over which the Company has a controlling financial interest or where the Company is a primary beneficiary. Certain amounts reported in the Company's prior fiscal year condensed consolidated financial statements have been reclassified to conform to the current fiscal year presentation. Investments in Variable Interest Entities and Other Investments The Company invests in certain companies that advance or develop new technologies applicable to its business. Each investment is evaluated for consolidation under the variable interest entities model and/or the voting interest model. The Company uses the equity method to account for investments in entities that it does not control if it is otherwise able to exert significant influence over the entities' operating and financial policies. Equity investments in entities over which the Company does not have the ability to exercise significant influence and whose securities do not have a readily determinable fair value are accounted for under the measurement alternative, where they are subject to fair value adjustments in certain circumstances (e.g., observable price changes or impairment). The results of our investments are not material to the unaudited condensed and consolidated financial statements for the periods presented. As of September 30, 2024 and March 31, 2024, 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 $57.1 million and $42.0 million. 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 assumptions, both historical and forward-looking, 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 indirect costs accruals, the provision for claimed costs, fair value measurements and the valuation and expected lives of 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, 2024 for further details on significant estimates and assumptions used. Recent Accounting Pronouncements Not Yet Adopted In November 2023, the FASB issued ASU 2023-07, Segment Reporting (Topic 280), which enhances reportable segment disclosure requirements, including significant segment expenses and interim disclosures (“Topic 280”). The guidance allows for disclosure of multiple measures of a segment’s profit or loss, and it requires that public entities with a single reportable segment provide all disclosures required by the ASU and all existing disclosures in Topic 280. ASU 2023-07 is effective for annual periods beginning after December 15, 2023 and interim periods within fiscal years beginning after December 15, 2024. The amendments are to be applied retrospectively, and early adoption is permitted. The Company is currently assessing the impact of this update and does not expect this update to have a material impact on its present or historical consolidated financial statements