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Accumulated Other Comprehensive Loss | 9 Months Ended
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Sep. 30, 2021
Equity [Abstract] |
Accumulated Other Comprehensive Loss | 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, 2021:
($ 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, 2020 | $ | (1.9) |  |  | $ | 0.6 |  |  | $ | (40.5) |  |  | $ | (68.8) |  |  | $ | (110.6) |
Other comprehensive income (loss) before reclassifications | (2.5) |  |  | — |  |  | 0.6 |  |  | (46.9) |  |  | (48.8) |
Amounts reclassified out from accumulated other comprehensive income (loss) | 3.2 |  |  | — |  |  | 0.5 |  |  | — |  |  | 3.7 |
Other comprehensive income (loss), net of tax | 0.7 |  |  | — |  |  | 1.1 |  |  | (46.9) |  |  | (45.1) |
Balance, September 30, 2021 | $ | (1.2) |  |  | $ | 0.6 |  |  | $ | (39.4) |  |  | $ | (115.7) |  |  | $ | (155.7) |
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 |  | 2021 |  | 2020 |  | 2021 |  | 2020 |
Gains (losses) on derivatives: |  |  |  |  |  |  |  |  |  |
Foreign currency contracts |  | $ | (0.1) |  |  | $ | (0.3) |  |  | $ | (1.1) |  |  | $ | 0.3 |  |  | Net sales
Foreign currency contracts |  | 0.4 |  |  | (0.1) |  |  | (1.9) |  |  | 0.3 |  |  | Cost of goods and services sold
Foreign currency contracts |  | (0.9) |  |  | 1.1 |  |  | (2.1) |  |  | 5.1 |  |  | Other expense (income)
Forward treasury locks |  | (0.1) |  |  | (0.1) |  |  | (0.3) |  |  | (0.3) |  |  | Interest expense
Total before tax |  | (0.7) |  |  | 0.6 |  |  | (5.4) |  |  | 5.4 |  |  |
Tax benefit (expense) |  | 0.7 |  |  | (0.3) |  |  | 2.2 |  |  | (1.9) |  |  |
Net of tax |  | $ | — |  |  | $ | 0.3 |  |  | $ | (3.2) |  |  | $ | 3.5 |  |  |
Amortization of defined benefit pension and other postretirement plans: |  |  |  |  |  |  |  |  |  |
Prior service credit |  | $ | 0.1 |  |  | $ | 0.1 |  |  | $ | 0.2 |  |  | $ | 0.4 |  |  | (a)
Actuarial losses |  | 0.1 |  |  | 0.2 |  |  | (0.1) |  |  | — |  |  | (a)
Settlements |  | — |  |  | (1.1) |  |  | (0.7) |  |  | (3.4) |  |  | (a)
Total before tax |  | 0.2 |  |  | (0.8) |  |  | (0.6) |  |  | (3.0) |  |  |
Tax benefit (expense) |  | (0.1) |  |  | 0.3 |  |  | 0.1 |  |  | 0.8 |  |  |
Net of tax |  | $ | 0.1 |  |  | $ | (0.5) |  |  | $ | (0.5) |  |  | $ | (2.2) |  |  |
Total reclassifications for the period, net of tax |  | $ | 0.1 |  |  | $ | (0.2) |  |  | $ | (3.7) |  |  | $ | 1.3 |  |  |
(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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- Definition The entire disclosure for comprehensive income, which includes, but is not limited to, 1) the amount of income tax expense or benefit allocated to each component of other comprehensive income, including reclassification adjustments, 2) the reclassification adjustments for each classification of other comprehensive income and 3) the ending accumulated balances for each component of comprehensive income. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -URI http://asc.fasb.org/topic&trid=2134417 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03(21)) -URI http://asc.fasb.org/extlink&oid=123367319&loc=SL114868664-224227 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 220 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-04(23)) -URI http://asc.fasb.org/extlink&oid=120399700&loc=SL114874048-224260 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 220 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-04(19)) -URI http://asc.fasb.org/extlink&oid=120400993&loc=SL114874131-224263 + Details
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