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Segment Information (Tables) | 6 Months Ended
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Jun. 30, 2025
Segment Reporting [Abstract] |
Schedule of Significant segment expenses | The significant expenses that are regularly provided to the CODM are disclosed in the Consolidated Statements of Net Income as a part of the consolidated net income and are as follows.
Significant segment expenses / income (Dollars in millions) |  | Three Months Ended June 30, |  |  | Six Months Ended June 30, |
|  | 2025 |  |  | 2024 |  |  | 2025 |  |  | 2024 |
Total direct costs |  | $ | (1,838 | ) |  | $ | (1,773 | ) |  | $ | (3,572 | ) |  | $ | (3,578 | )
Total production overhead costs |  |  | (375 | ) |  |  | (357 | ) |  |  | (740 | ) |  |  | (725 | )
Cost of sales |  | $ | (2,213 | ) |  | $ | (2,130 | ) |  | $ | (4,312 | ) |  | $ | (4,303 | )
Research, development and engineering expenses (gross) |  | $ | (155 | ) |  | $ | (160 | ) |  | $ | (302 | ) |  | $ | (317 | )
Reimbursements from customer funded engineering projects |  |  | 48 |  |  |  | 44 |  |  |  | 100 |  |  |  | 88 |
Research, development and engineering expenses, net |  | $ | (107 | ) |  | $ | (116 | ) |  | $ | (202 | ) |  | $ | (229 | )
Schedule of Segment assets and expenditures for long-lived assets | The segment assets and expenditures for long-lived assets for the periods presented are as follows.
Segment assets and expenditures for long-lived assets (Dollars in millions) |  | Three Months Ended June 30, |  |  | Six Months Ended June 30, |
|  | 2025 |  |  | 2024 |  |  | 2025 |  |  | 2024 |
Expenditures for long-lived assets |  | $ | (115 | ) |  | $ | (154 | ) |  | $ | (217 | ) |  | $ | (294 | )
Total assets |  |  | 8,476 |  |  |  | 8,010 |  |  |  | 8,476 |  |  |  | 8,010 |

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- Definition Tabular disclosure of all significant reconciling items in the reconciliation of total assets from reportable segments to the entity's consolidated assets. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 31 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482810/280-10-50-31 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 30 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482810/280-10-50-30 + Details
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- Definition Tabular disclosure of reconciliation of other items from reportable segments to their consolidated amount. Excludes reconciliation of revenue, profit (loss), and assets. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 31 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482810/280-10-50-31 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 30 -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482810/280-10-50-30 + Details
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