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Comprehensive Income (Tables) | 9 Months Ended
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Sep. 30, 2018
Comprehensive Income [Abstract] |
Reclassifications Out of Accumulated Other Comprehensive Loss, Net of Related Tax | The following table summarizes the amounts reclassified out of accumulated other comprehensive loss attributable to the Company:
|  | Three Months Ended |  |  | Nine Months Ended |
(millions of dollars) |  | Sep. 30, 2018 |  |  | Oct. 1, 2017 |  |  | Sep. 30, 2018 |  |  | Oct. 1, 2017 |
Amortization of pension items: |  |  |  |  |  |  |  |  |  |  |  |
Pre-tax amount |  | $ | 6.2 |  |  | $ | 1.7 |  |  | $ | 11.1 |  |  | $ | 5.5 |
Tax |  |  | (1.6 | ) |  |  | (0.7 | ) |  |  | (2.7 | ) |  |  | (1.8 | )
Net of tax |  | $ | 4.6 |  |  | $ | 1.0 |  |  | $ | 8.4 |  |  | $ | 3.7 |
Accumulated Other Comprehensive Loss, Net of Related Tax, Attributable to MTI | The major components of accumulated other comprehensive loss, net of related tax, attributable to MTI are as follows:
(millions of dollars) |  | Foreign Currency Translation Adjustment |  |  | Unrecognized Pension Costs |  |  | Net Gain (Loss) on Derivatives |  |  | Total |
Balance as of December 31, 2017 |  | $ | (104.1 | ) |  | $ | (86.5 | ) |  | $ | 4.5 |  |  | $ | (186.1 | )
Other comprehensive loss before reclassifications |  |  | (61.0 | ) |  |  | — |  |  |  | — |  |  |  | (61.0 | )
Amounts reclassified from AOCI |  |  | — |  |  |  | 8.4 |  |  |  | (0.1 | ) |  |  | 8.3 |
Net current period other comprehensive income (loss) |  |  | (61.0 | ) |  |  | 8.4 |  |  |  | (0.1 | ) |  |  | (52.7 | )
Balance as of September 30, 2018 |  | $ | (165.1 | ) |  | $ | (78.1 | ) |  | $ | 4.4 |  |  | $ | (238.8 | )

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- Definition Tabular disclosure of information about items reclassified out of accumulated other comprehensive income (loss). + References No definition available. + Details
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- Definition Tabular disclosure of the components of accumulated other comprehensive income (loss). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -URI http://asc.fasb.org/extlink&oid=114867106&loc=SL7669686-108580 + Details
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