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Accumulated Other Comprehensive Income (Loss) by Component (Tables) | 12 Months Ended
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Dec. 31, 2020
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract] |
Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block] | The table below presents the changes in Accumulated other comprehensive income (loss) by component.
(in millions) | Pension and postretirement benefit | Cumulative foreign currency translation adjustment |  | Total
Balance as of December 31, 2018 | $ | (57.4) |  | (398.8) |  |  | $ | (456.2) |
Other comprehensive loss before reclassification | (18.0) |  | 43.0 |  |  | 25.0 |
Amounts reclassified from AOCI after tax expense of $0.7, $- and $0.7 | 3.4 |  | — |  |  | 3.4 |
Other comprehensive income after tax benefit of $4.5, $- and $4.5 | (14.6) |  | 43.0 |  |  | 28.4 |
Balance as of December 31, 2019 | (72.0) |  | (355.8) |  |  | (427.8) |
Other comprehensive income before reclassification | (12.3) |  | 59.8 |  |  | 47.5 |
Amounts reclassified from AOCI after tax expense of $0.7, $- and $0.7 | 3.1 |  | — |  |  | 3.1 |
Other comprehensive income after tax benefit of $3.2, $- and $3.2 | (9.2) |  | 59.8 |  |  | 50.6 |
Balance as of December 31, 2020 | $ | (81.2) |  | (296.0) |  |  | $ | (377.2) |

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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=121641772&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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