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Inventories (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2025 | Dec. 31, 2024
Capitalized Contract Cost [Line Items] |  |
Cost incurred on long-term contracts in progress | $ 1,249,400 | $ 1,026,611
Raw materials | 1,506,847 | 1,373,491
Advances to suppliers and subcontractors | 404,370 | 414,626
Inventory, gross | 3,160,617 | 2,814,728
Less: Provision for losses on long-term contracts | (30,861) | (41,032)
Inventories, net | 3,129,756 | 2,773,696
Pre-contract costs |  |
Capitalized Contract Cost [Line Items] |  |
Cost incurred on long-term contracts in progress | $ 118,170 | $ 167,094

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