Commitments and Contingencies	12 Months Ended
Mar. 31, 2026
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Commitments and Contingencies Letters of Credit and Third-Party Guarantees As of both March 31, 2026 and 2025, the Company was contingently liable under open standby letters of credit and bank guarantees issued by our banks in favor of third parties that totaled $3 million and $4 million, respectively. These letters of credit and bank guarantees primarily support insurance and bid and performance obligations. At both March 31, 2026 and 2025, approximately $1 million of these instruments reduce the available borrowings under the Revolving Credit Facility. The remainder is guaranteed under a separate $3 million facility, of which $1 million and less than a million were available to the Company at March 31, 2026 and 2025, respectively. Litigation Our performance under U.S. government contracts and compliance with the terms of those contracts and applicable laws and regulations are subject to continuous audit, review, and investigation by the U.S. government, which may include such investigative techniques as subpoenas or civil investigative demands. Given the nature of our business, these audits, reviews, and investigations may focus, among other areas, on various aspects of procurement integrity, labor time reporting, sensitive and/or classified information access and control, executive compensation, and post-government employment restrictions. We are not always aware of our status in such matters, but we are currently aware of certain pending audits and investigations involving labor time reporting, procurement integrity, and classified information access. In addition, from time to time, we are also involved in legal proceedings and investigations arising in the ordinary course of business, including those relating to employment matters, relationships with customers and contractors, intellectual property disputes, and other business matters. These legal proceedings seek various remedies, including claims for monetary damages in varying amounts, none of which are considered material, or are unspecified as to amount. Although the outcome of any such matter is inherently uncertain and may be materially adverse, based on current information, we do not expect any of the currently ongoing audits, reviews, investigations, or litigation to have a material adverse effect on our financial condition and results of operations. As of both March 31, 2026 and 2025, there were no material amounts accrued in the consolidated financial statements related to these proceedings. During the second quarter of fiscal 2025, the Company secured insurance recoveries of $115 million from claims related to the Company’s settlement described in Note 20, “Commitments and Contingencies,” to the consolidated financial statements contained within our Annual Report on Form 10-K for the fiscal year ended March 31, 2024. The insurance recoveries offset our general and administrative expenses in our Consolidated Statements of Operations. Government Contracting Matters - Provision for Claimed Costs U.S. government contracts and subcontracts are subject to extensive legal and regulatory requirements. From time to time and in the ordinary course of business, agencies of the U.S. government, including the Defense Contract Audit Agency (“DCAA”), audit the Company’s claimed costs and conduct inquiries and investigations of our business practices with respect to government contracts to determine whether the Company's operations are conducted in accordance with these requirements and the terms of the relevant contracts. Management believes it has recorded the appropriate provision for claimed costs for any audit, inquiry, or investigation of which it is aware that may be subject to any reductions and/or penalties. As of March 31, 2026 and 2025, the Company had recorded liabilities (included in accounts payable and other accrued expenses) of approximately $248 million and $245 million, respectively, for estimated adjustments to claimed costs based on its historical DCAA audit results, including the final resolution of such audits with the Defense Contract Management Agency (“DCMA”), for claimed costs incurred subsequent to fiscal 2011.

As of both March 31, 2026 and 2025, the Company was contingently liable under open standby letters of credit and bank guarantees issued by our banks in favor of third parties that totaled $3 million and $4 million, respectively. These letters of credit and bank guarantees primarily support insurance and bid and performance obligations. At both March 31, 2026 and 2025, approximately $1 million of these instruments reduce the available borrowings under the Revolving Credit Facility. The remainder is guaranteed under a separate $3 million facility, of which $1 million and less than a million were available to the Company at March 31, 2026 and 2025, respectively.

Our performance under U.S. government contracts and compliance with the terms of those contracts and applicable laws and regulations are subject to continuous audit, review, and investigation by the U.S. government, which may include such investigative techniques as subpoenas or civil investigative demands. Given the nature of our business, these audits, reviews, and investigations may focus, among other areas, on various aspects of procurement integrity, labor time reporting, sensitive and/or classified information access and control, executive compensation, and post-government employment restrictions. We are not always aware of our status in such matters, but we are currently aware of certain pending audits and investigations involving labor time reporting, procurement integrity, and classified information access. In addition, from time to time, we are also involved in legal proceedings and investigations arising in the ordinary course of business, including those relating to employment matters, relationships with customers and contractors, intellectual property disputes, and other business matters. These legal proceedings seek various remedies, including claims for monetary damages in varying amounts, none of which are considered material, or are unspecified as to amount. Although the outcome of any such matter is inherently uncertain and may be materially adverse, based on current information, we do not expect any of the currently ongoing audits, reviews, investigations, or litigation to have a material adverse effect on our financial condition and results of operations. As of both March 31, 2026 and 2025, there were no material amounts accrued in the consolidated financial statements related to these proceedings.

During the second quarter of fiscal 2025, the Company secured insurance recoveries of $115 million from claims related to the Company’s settlement described in Note 20, “Commitments and Contingencies,” to the consolidated financial statements contained within our Annual Report on Form 10-K for the fiscal year ended March 31, 2024. The insurance recoveries offset our general and administrative expenses in our Consolidated Statements of Operations.

U.S. government contracts and subcontracts are subject to extensive legal and regulatory requirements. From time to time and in the ordinary course of business, agencies of the U.S. government, including the Defense Contract Audit Agency (“DCAA”), audit the Company’s claimed costs and conduct inquiries and investigations of our business practices with respect to government contracts to determine whether the Company's operations are conducted in accordance with these requirements and the terms of the relevant contracts.

Management believes it has recorded the appropriate provision for claimed costs for any audit, inquiry, or investigation of which it is aware that may be subject to any reductions and/or penalties. As of March 31, 2026 and 2025, the Company had recorded liabilities (included in accounts payable and other accrued expenses) of approximately $248 million and $245 million, respectively, for estimated adjustments to claimed costs based on its historical DCAA audit results, including the final resolution of such audits with the Defense Contract Management Agency (“DCMA”), for claimed costs incurred subsequent to fiscal 2011.