CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Millions |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Jun. 28, 2026 |
Jun. 29, 2025 |
Jun. 28, 2026 |
Jun. 29, 2025 |
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| Income Statement [Abstract] | ||||
| Sales | $ 1,261.1 | $ 1,140.4 | $ 2,412.6 | $ 2,284.8 |
| Cost of sales | 951.3 | 897.9 | 1,839.9 | 1,806.5 |
| Gross profit | 309.8 | 242.5 | 572.7 | 478.3 |
| Selling and administrative expenses | 95.7 | 82.8 | 187.8 | 167.8 |
| Restructuring charges (credits) | 3.9 | (1.3) | 10.9 | (1.3) |
| (Gain) loss on asset sales and sales of businesses, net | (9.8) | 0.0 | (9.8) | 3.9 |
| Operating income | 220.0 | 161.0 | 383.8 | 307.9 |
| Nonoperating retirement benefit expense | (4.3) | (4.1) | (8.6) | (8.0) |
| Interest expense, net | (23.9) | (25.4) | (47.6) | (48.4) |
| Other income, net | 1.1 | 1.8 | 1.9 | 3.3 |
| Income before income taxes | 192.9 | 133.3 | 329.5 | 254.8 |
| Income tax provision | 38.6 | 29.3 | 54.7 | 50.3 |
| Net income | 154.3 | 104.0 | 274.8 | 204.5 |
| Less: Net income attributable to noncontrolling interests | 3.3 | 3.3 | 5.6 | 6.8 |
| Net income attributable to ATI | $ 151.0 | $ 100.7 | $ 269.2 | $ 197.7 |
| Basic net income attributable to ATI per common share (in dollars per share) | $ 1.11 | $ 0.72 | $ 1.97 | $ 1.40 |
| Diluted net income attributable to ATI per common share (in dollars per share) | $ 1.09 | $ 0.70 | $ 1.94 | $ 1.38 |
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- Definition Gain (Loss) on asset and business sales, net No definition available.
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- Definition Restructuring, Settlement And Impairment Provisions, Excluding Goodwill Impairment Loss No definition available.
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- Definition The aggregate costs related to goods produced and sold and services rendered by an entity during the reporting period. This excludes costs incurred during the reporting period related to financial services rendered and other revenue generating activities. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Amount of net periodic benefit cost (credit) for defined benefit plan. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition The amount of net income (loss) for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Aggregate revenue less cost of goods and services sold or operating expenses directly attributable to the revenue generation activity. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount, before tax, of income (loss) including portion attributable to noncontrolling interest. Includes, but is not limited to, income (loss) from continuing operations, discontinued operations and equity method investments. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- References No definition available.
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- Definition Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of interest income (expense) classified as nonoperating. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition The portion of profit or loss for the period, net of income taxes, which is attributable to the parent. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of Net Income (Loss) attributable to noncontrolling interest. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition The net result for the period of deducting operating expenses from operating revenues. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Amount of income (expense) related to nonoperating activities, classified as other. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition The consolidated profit or loss for the period, net of income taxes, including the portion attributable to the noncontrolling interest. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition The aggregate total costs related to selling a firm's product and services, as well as all other general and administrative expenses. Direct selling expenses (for example, credit, warranty, and advertising) are expenses that can be directly linked to the sale of specific products. Indirect selling expenses are expenses that cannot be directly linked to the sale of specific products, for example telephone expenses, Internet, and postal charges. General and administrative expenses include salaries of non-sales personnel, rent, utilities, communication, etc. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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