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Comprehensive Income (Tables) | 3 Months Ended
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Mar. 30, 2025
Comprehensive Income [Abstract] |
Reclassifications Out of Accumulated Other Comprehensive Loss | The following table summarizes the amounts reclassified out of accumulated other comprehensive loss attributable to the Company:
|  | Three Months Ended |
(in millions of dollars) |  | Mar. 30, 2025 |  |  | Mar. 31, 2024 |
Amortization of pension items: |  |  |  |  |  |
Pre-tax amount |  | $ | 0.1 |  |  | $ | 0.3 |
Tax |  |  | — |  |  |  | (0.1 | )
Net of tax |  | $ | 0.1 |  |  | $ | 0.2 |
Accumulated Other Comprehensive Loss | The major components of accumulated other comprehensive loss, net of related tax, attributable to MTI are as follows:
(in millions of dollars) |  | Foreign Currency Translation Adjustment |  |  | Unrecognized Pension Costs |  |  | Net Gain (Loss) on Derivative Instruments |  |  | Total |
Balance as of December 31, 2024 |  | $ | (399.6 | ) |  | $ | 1.9 |  |  | $ | 10.6 |  |  | $ | (387.1 | )
Other comprehensive income (loss) before reclassifications |  |  | 10.5 |  |  |  | — |  |  |  | — |  |  |  | 10.5 |
Amounts reclassified from AOCI |  |  | — |  |  |  | 0.1 |  |  |  | (0.3 | ) |  |  | (0.2 | )
Net current period other comprehensive income (loss) |  |  | 10.5 |  |  |  | 0.1 |  |  |  | (0.3 | ) |  |  | 10.3 |
Balance as of March 30, 2025 |  | $ | (389.1 | ) |  | $ | 2.0 |  |  | $ | 10.3 |  |  | $ | (376.8 | )

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