Summary of Significant Accounting Policies (Policies) |
3 Months Ended |
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Mar. 31, 2026 | |
| Accounting Policies [Abstract] | |
| Segment Reporting | Our two reportable segments reflect the way performance is assessed and resources are allocated by our Chief Executive Officer, who is our chief operating decision maker (“CODM”). |
| Basis of Presentation | Basis of Presentation The accompanying unaudited Consolidated Financial Statements have been prepared in accordance with accounting principles generally accepted in the United States of America (“U.S. GAAP”) and include the accounts of DRS, its wholly owned subsidiaries and its controlling interests and contain all adjustments, which are of a normal and recurring nature, considered necessary by management to present fairly the financial position, results of operations and cash flows for the periods presented. Interests in ventures that are controlled by the Company, or for which the Company is otherwise deemed to be the primary beneficiary, are consolidated. For joint ventures in which the Company does not have a controlling interest, but exerts significant influence, the Company applies the equity method of accounting. All intercompany transactions and balances have been eliminated in consolidation. The preparation of financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosures of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. These estimates and assumptions include those relating to the recognition of contract revenues and estimated costs to complete contracts in process, recoverability of reported amounts of goodwill and intangible assets, valuation of acquired intangibles, accounting for business combinations, valuation of pensions and other postretirement benefits, the valuation of deferred tax assets and liabilities and the valuation of unrecognized tax benefits. Actual results could differ from these estimates. The unaudited Consolidated Financial Statements have been prepared pursuant to the rules and regulations of the Securities and Exchange Commission (“SEC”). These rules and regulations permit some of the information and footnote disclosures included in financial statements prepared in accordance with U.S. GAAP to be condensed or omitted. These unaudited Consolidated Financial Statements should be read in conjunction with our audited Consolidated Financial Statements included in our Annual Report on Form 10-K for the year ended December 31, 2025.
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| New Accounting Pronouncements | New Accounting Pronouncements Disaggregation of Income Statement Expenses In November 2024, the Financial Accounting Standards Board (the “FASB”) issued Accounting Standards Update (“ASU”) 2024-03, Income Statement—Reporting Comprehensive Income—Expense Disaggregation Disclosures (Subtopic 220-40): Disaggregation of Income Statement Expenses, which requires disclosure of specified information about certain costs and expenses. The new standard is effective for fiscal years beginning after December 15, 2026 and interim periods within fiscal years beginning after December 15, 2027, on a prospective basis. We are currently evaluating the impact of adopting this new pronouncement. 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 removes references to project stages, requiring companies to capitalize internal-use software costs when management commits to funding the software project and it is probable the project will be completed. The new standard is effective for fiscal years beginning after December 15, 2027 and interim periods within those fiscal years, and may be applied on a prospective, modified transition, or retrospective transition basis. We are currently evaluating the impact of adopting this new pronouncement. Accounting for Government Grants Received by Business Entities In December 2025, the FASB issued ASU 2025-10, Government Grants (Topic 832)—Accounting for Government Grants Received by Business Entities, which establishes the accounting for government grants received by business entities. The new standard is effective for fiscal years beginning after December 15, 2028 and interim periods within those fiscal years, and may be applied on a modified prospective, modified retrospective, or retrospective transition basis. We are currently evaluating the impact of adopting this new pronouncement.
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| Revenue from Contracts with Customers | Contract Estimates Revenues for the majority of our contracts are measured using the over time, percentage of completion cost-to-cost method of accounting to calculate percentage of completion. We believe this is an appropriate measure of progress toward satisfaction of performance obligations as this measure most accurately depicts the progress of our work and transfer of control to our customers. Due to the long-term nature of many of our contracts, developing the estimated transaction price and total cost at completion often requires judgment. The estimated transaction price may include variable consideration such as performance incentives, requests for equitable adjustment (“REAs”) and claims. Variable consideration is included in the estimated transaction price only to the extent it is probable that a significant reversal of cumulative revenue recognized will not occur when the uncertainty associated with the variable consideration is subsequently resolved. Factors that must be considered in estimating the cost of the work to be completed include the nature and complexity of the work to be performed, subcontractor performance and the risk and impact of delayed performance. After establishing the estimated total cost at completion, we follow a standard Estimate at Completion (“EAC”) process in which we review the progress and performance on our ongoing contracts on a routine basis. Adjustments to original estimates for a contract's revenue, estimated costs at completion and estimated profit or loss often are required as work progresses under a contract, as experience is gained and as more information is obtained, even though the scope of work required under the contract may not change and are also required if contract modifications occur. When adjustments in estimated total costs at completion are determined, the related impact on revenue and operating earnings are recognized using the cumulative catch-up method, which recognizes in the current period the cumulative effect of such adjustments for all prior periods. Any anticipated losses on these contracts are fully recognized in the period in which the losses become evident. Contract Assets and Liabilities The timing of revenue recognition, billings and cash collections results in billed accounts receivable, unbilled receivables (contract assets), and customer advances and deposits (contract liabilities) on the Consolidated Balance Sheets. Amounts are billed as work progresses in accordance with agreed-upon contractual terms, either at periodic intervals (e.g., biweekly or monthly) or upon achievement of contractual milestones. Generally, billing occurs subsequent to revenue recognition, resulting in contract assets. However, we sometimes receive advances or deposits from our customers before revenue is recognized, resulting in contract liabilities.
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| Earnings Per Share | Basic EPS is computed by dividing net earnings by the weighted average number of shares of common stock outstanding during each period. The computation of diluted EPS includes the dilutive effect of outstanding stock-based compensation awards (which primarily consist of employee stock options, restricted stock units, and performance-based restricted stock units).
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