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Restructuring Charges 2020 Plan Restructuring Activity (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2022 | Jun. 30, 2021 | Jun. 30, 2022 | Jun. 30, 2021 | Dec. 31, 2021
Restructuring Cost and Reserve [Line Items] |  |  |  |  |
Severance and termination costs | $ 0.0 | $ 0.6 | $ 0.3 | $ 2.1 |
Lease impairment costs | 0.0 | (0.9) | 5.3 | (1.1) |
Other restructuring costs | (0.1) | 0.1 | 0.9 | 0.1 |
Restructuring charges | (0.1) | $ (0.2) | 6.5 | $ 1.1 |
Restructuring Reserve | 3.5 |  | 3.5 |  | $ 9.4
Employee Severance [Member] |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |
Restructuring Reserve | 3.5 |  | 3.5 |  | 9.4
Lease impairment costs [Member] |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |
Restructuring Reserve | 0.0 |  | 0.0 |  | 0.0
Other Restructuring [Member] |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |
Restructuring Reserve | $ 0.0 |  | 0.0 |  | $ 0.0
Non-cash Items [Member] |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |
Severance and termination costs |  |  | 0.0 |  |
Lease impairment costs |  |  | 5.3 |  |
Other restructuring costs |  |  | 0.9 |  |
Restructuring charges |  |  | 6.2 |  |
Cash Payments [Member] |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |
Severance and termination costs |  |  | 6.2 |  |
Lease impairment costs |  |  | 0.0 |  |
Other restructuring costs |  |  | 0.0 |  |
Restructuring charges |  |  | $ 6.2 |  |

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- Definition Amount of loss from impairment of right-of-use asset from operating lease. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 25 -Paragraph 6 -Subparagraph (c) -URI https://asc.fasb.org/extlink&oid=123399704&loc=SL77918431-209957 + Details
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