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Accumulated Other Comprehensive Loss (Tables) | 9 Months Ended
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Sep. 30, 2020
Equity [Abstract] |
Schedule of Components of Accumulated Other Comprehensive Loss | The following table presents the changes in the components of accumulated other comprehensive income ("AOCI") (loss), net of tax, for the nine months ended September 30, 2020:
($ in millions) | (Losses) gains on derivatives |  | Change in equity affiliate investment AOCI |  | Defined benefit pension and other postretirement plans |  | Foreign currency translation |  | Total
Balance, December 31, 2019 | $ | (0.8) |  |  | $ | 0.4 |  |  | $ | (40.3) |  |  | $ | (108.9) |  |  | $ | (149.6) |
Other comprehensive income (loss) before reclassifications | 2.5 |  |  | — |  |  | (6.2) |  |  | (4.9) |  |  | (8.6) |
Amounts reclassified out from accumulated other comprehensive income (loss) | (3.5) |  |  | — |  |  | 2.2 |  |  | — |  |  | (1.3) |
Other comprehensive income (loss), net of tax | (1.0) |  |  | — |  |  | (4.0) |  |  | (4.9) |  |  | (9.9) |
Balance, September 30, 2020 | $ | (1.8) |  |  | $ | 0.4 |  |  | $ | (44.3) |  |  | $ | (113.8) |  |  | $ | (159.5) |
Schedule of Reclassification out of Accumulated Other Comprehensive Loss | A summary of the reclassifications out of accumulated other comprehensive loss is presented in the following table:
($ in millions) |  | Three Months Ended September 30, |  |  |  | Nine Months Ended September 30, |  |  |  | Location on Statement of Income
Detail of components |  | 2020 |  | 2019 |  | 2020 |  | 2019 |  |
Gains (losses) on derivatives: |  |  |  |  |  |  |  |  |  |
Foreign currency contracts |  | $ | (0.3) |  |  | $ | 0.3 |  |  | $ | 0.3 |  |  | $ | 0.8 |  |  | Net sales
Foreign currency contracts |  | (0.1) |  |  | 0.3 |  |  | 0.3 |  |  | 0.8 |  |  | Cost of goods and services sold
Foreign currency contracts |  | 1.1 |  |  | (4.3) |  |  | 5.1 |  |  | 5.0 |  |  | Other expense (income)
Forward treasury locks |  | (0.1) |  |  | (0.1) |  |  | (0.3) |  |  | (0.3) |  |  | Interest expense
Total before tax |  | 0.6 |  |  | (3.8) |  |  | 5.4 |  |  | 6.3 |  |  |
Tax benefit (expense) |  | (0.3) |  |  | 1.3 |  |  | (1.9) |  |  | (2.0) |  |  |
Net of tax |  | $ | 0.3 |  |  | $ | (2.5) |  |  | $ | 3.5 |  |  | $ | 4.3 |  |  |
Amortization of defined benefit pension and other postretirement plans: |  |  |  |  |  |  |  |  |  |
Prior service credit |  | $ | 0.1 |  |  | $ | 0.1 |  |  | $ | 0.4 |  |  | $ | 0.4 |  |  | (a)
Actuarial losses |  | 0.2 |  |  | 0.2 |  |  | — |  |  | 0.2 |  |  | (a)
Settlements |  | (1.1) |  |  | (2.7) |  |  | (3.4) |  |  | (2.7) |  |  | (a)
Total before tax |  | (0.8) |  |  | (2.4) |  |  | (3.0) |  |  | (2.1) |  |  |
Tax benefit (expense) |  | 0.3 |  |  | 0.6 |  |  | 0.8 |  |  | 0.5 |  |  |
Net of tax |  | $ | (0.5) |  |  | $ | (1.8) |  |  | $ | (2.2) |  |  | $ | (1.6) |  |  |
Total reclassifications for the period, net of tax |  | $ | (0.2) |  |  | $ | (4.3) |  |  | $ | 1.3 |  |  | $ | 2.7 |  |  |
(a) These components are included in the computation of net periodic benefit cost. Please refer to Note 14, Benefit Plans, for additional details.

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