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v3.21.1

Exit or Disposal Cost Obligations (Tables) | 3 Months Ended
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Mar. 31, 2021
Restructuring and Related Activities [Abstract] |
Rollforward of liability balances for exit or disposal cost obligations | The following is a rollforward of liability balances for exit or disposal cost obligations associated with the closing of the ACP business.
| Contract Termination Charges |  | Other Associated Closing Costs |  | Involuntary Termination Benefits |  | Total
Balance at December 31, 2020 | $ | 0.2 |  |  | $ | 2.4 |  |  | $ | 0.8 |  |  | $ | 3.4 |
Costs incurred | — |  |  | — |  |  | — |  |  | — |
Costs paid or otherwise settled | (0.2) |  |  | (2.4) |  |  | (0.7) |  |  | (3.3) |
Balance at March 31, 2021 | $ | — |  |  | $ | — |  |  | $ | 0.1 |  |  | $ | 0.1 |

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- Definition Tabular disclosure of an entity's restructuring reserve that occurred during the period associated with the exit from or disposal of business activities or restructurings for each major type of cost. This element may also include a description of any reversal and other adjustment made during the period to the amount of an accrued liability for restructuring activities. This element may be used to encapsulate the roll forward presentations of an entity's restructuring reserve by type of cost and in total, and explanation of changes that occurred in the period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b)(2) -URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SAB Topic 5.P.4(b)(2)) -URI http://asc.fasb.org/extlink&oid=115931487&loc=d3e140904-122747 + Details
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