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Fair Value Measurements (Tables) | 12 Months Ended
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Dec. 31, 2022
Fair Value Disclosures [Abstract] |
Carrying Amount and Fair Values of the Company's Assets and Liabilities Measured on a Recurring Basis | The following table presents the carrying amount and fair values of the Company’s assets and liabilities measured on a recurring basis:
|  | December 31, 2022 |  |  | December 31, 2021 |
(in millions) |  | Carrying Amount |  |  | Fair Value |  |  | Carrying Amount |  |  | Fair Value |
Assets |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Non-derivatives: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cash and cash equivalents |  | $ | 147.1 |  |  | $ | 147.1 |  |  | $ | 141.8 |  |  | $ | 141.8 |
Derivatives (Level 1 measurement): |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Other current and non-current assets: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Emissions Trading Scheme credits |  |  | 2.7 |  |  |  | 2.7 |  |  |  | 3.9 |  |  |  | 3.9 |
Liabilities |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Non-derivatives: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Finance leases (including current portion) |  | $ | — |  |  | $ | — |  |  | $ | 0.1 |  |  | $ | 0.1 |
Derivatives (Level 1 measurement): |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Other current liabilities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Foreign currency forward exchange contracts |  |  | 0.5 |  |  |  | 0.5 |  |  |  | 1.2 |  |  |  | 1.2 |
Non-financial liabilities (Level 3 measurement): |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stock equivalent units |  |  | 26.4 |  |  |  | 26.4 |  |  |  | 17.3 |  |  |  | 17.3 |

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- Definition Tabular disclosure of assets and liabilities, including [financial] instruments measured at fair value that are classified in stockholders' equity, if any, that are measured at fair value on a recurring basis. The disclosures contemplated herein include the fair value measurements at the reporting date by the level within the fair value hierarchy in which the fair value measurements in their entirety fall, segregating fair value measurements using quoted prices in active markets for identical assets (Level 1), significant other observable inputs (Level 2), and significant unobservable inputs (Level 3). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=126976982&loc=d3e19207-110258 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=126976982&loc=d3e19207-110258 + Details
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