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v3.22.1

Accumulated Other Comprehensive Income (Tables) | 3 Months Ended
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Mar. 31, 2022
Equity [Abstract] |
After-tax components of comprehensive income (loss) | The following table sets forth the after-tax components of accumulated other comprehensive income and changes thereto recorded during the three months ended March 31, 2022:
| Foreign Currency Translation Adjustment |  |  |  | Prior Service Credit Associated with Postretirement Plans |  |  |  |  |  | Total Accumulated Other Comprehensive Income
| (Dollars in millions)
December 31, 2021 | $ | 0.8 |  |  |  |  | $ | 297.1 |  |  |  |  |  |  | $ | 297.9 |
Reclassification from other comprehensive income to earnings | — |  |  |  |  | (13.4) |  |  |  |  |  |  | (13.4) |
Current period change | 1.9 |  |  |  |  | — |  |  |  |  |  |  | 1.9 |
March 31, 2022 | $ | 2.7 |  |  |  |  | $ | 283.7 |  |  |  |  |  |  | $ | 286.4 |

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- Definition Tabular disclosure of the components of accumulated other comprehensive income (loss). + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 830 -SubTopic 30 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6450520&loc=d3e32583-110901 Reference 2: 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=124509347&loc=SL7669686-108580 Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 830 -SubTopic 30 -Section 45 -Paragraph 20 -URI http://asc.fasb.org/extlink&oid=118261656&loc=d3e32211-110900 + Details
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