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Impairment and Restructuring Charges (Tables) | 6 Months Ended
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Jun. 30, 2021
Impairment and Restructuring Charges |
Schedule of impairment and restructuring charge | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | Three Months Ended | ​ | Six Months Ended
​ | June 30, | ​ | June 30,
​ | 2021 |  | 2020 |  | 2021 |  | 2020
| (in millions)
Intangible assets, net | $ | — | ​ | $ | 0.2 | ​ | $ | — | ​ | $ | 89.0
Property, plant and equipment | ​ | — | ​ | ​ | — | ​ | ​ | — | ​ | ​ | 8.7
Operating lease right-of-use assets | ​ | — | ​ | ​ | — | ​ | ​ | — | ​ | ​ | 0.2
Total impairment charges | ​ | — | ​ | ​ | 0.2 | ​ | ​ | — | ​ | ​ | 97.9
Restructuring––cost of sales | ​ | — | ​ | ​ | — | ​ | ​ | — | ​ | ​ | 39.8
Restructuring––SG&A | ​ | — | ​ | ​ | 5.4 | ​ | ​ | 0.1 | ​ | ​ | 5.4
Total impairment and restructuring charges | $ | — | ​ | $ | 5.6 | ​ | $ | 0.1 | ​ | $ | 143.1

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- Definition Tabular disclosure of costs incurred for restructuring including, but not limited to, exit and disposal activities, remediation, implementation, integration, asset impairment, and charges against earnings from the write-down of assets. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB TOPIC 5.P.3) -URI http://asc.fasb.org/extlink&oid=115931487&loc=d3e140864-122747 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869 Reference 3: 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) -URI http://asc.fasb.org/extlink&oid=115931487&loc=d3e140904-122747 + Details
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