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Schedule II - Valuation and Qualifying Accounts - Valuation and Qualifying Accounts (Details) - USD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
SEC Schedule, 12-09, Allowance, Credit Loss [Member] |  |  |  |
Balance at beginning of year |  | $ 3.6 | $ 2.5 | $ 2.4
Charged to costs and expenses |  | 2.2 | 2.5 | 0.4
Reclassification(1) | [1] | 0.0 | 0.5 | 0.8
Charged to other accounts(2) | [2] | 0.0 | 0.0 | (0.2)
Deductions(3) | [3] | (1.2) | (1.9) | (0.9)
Balance at end of year |  | 4.6 | 3.6 | 2.5
Sales Returns and Allowances [Member] |  |  |  |
Balance at beginning of year |  | 1.2 | 1.3 | 0.8
Charged to costs and expenses |  | 0.2 | 0.1 | 0.7
Deductions(3) | [4] | (0.4) | (0.2) | (0.2)
Balance at end of year |  | 1.0 | 1.2 | 1.3
SEC Schedule, 12-09, Reserve, Inventory [Member] |  |  |  |
Balance at beginning of year |  | 9.8 | 5.6 | 4.1
Charged to costs and expenses |  | 4.4 | 4.6 | 1.9
Charged to other accounts(2) | [5] | 0.2 | 0.0 | (0.1)
Deductions(3) | [6] | (0.8) | (0.4) | (0.3)
Balance at end of year |  | 13.6 | 9.8 | 5.6
SEC Schedule, 12-09, Valuation Allowance, Deferred Tax Asset [Member] |  |  |  |
Balance at beginning of year |  | 6.2 | 11.5 | 9.7
Charged to costs and expenses |  | 0.9 | (5.2) | 2.4
Charged to other accounts(2) | [5] | 0.4 | (0.1) | (0.6)
Balance at end of year |  | $ 7.5 | $ 6.2 | $ 11.5
[1] | Includes amount reclassified between Allowance for Doubtful Accounts and Other Receivables related to a customer's open receivables balance for proper classification and acquisition-related adjustments.
[2] | Primarily includes impact from foreign currency fluctuations.
[3] | Includes accounts determined to be uncollectible and charged against reserves, net of collections on accounts previously charged against reserves.
[4] | Includes accounts determined to be uncollectible and charged against reserves, net of collections on accounts previously charged against reserves.
[5] | Primarily includes impact from foreign currency fluctuations.
[6] | Includes inventory identified as excess, slow moving or obsolete and charged against reserves.

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- Definition Amount of increase (decrease) in valuation and qualifying accounts and reserves from adjustment. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 4 -Subparagraph (SX 210.12-09) -URI http://asc.fasb.org/extlink&oid=120395691&loc=d3e24092-122690 + Details
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- Definition Amount of valuation and qualifying accounts and reserves. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 4 -Subparagraph (SX 210.12-09(Column B)) -URI http://asc.fasb.org/extlink&oid=120395691&loc=d3e24092-122690 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 4 -Subparagraph (SX 210.12-09(Column E)) -URI http://asc.fasb.org/extlink&oid=120395691&loc=d3e24092-122690 + Details
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- Definition Amount of increase in valuation and qualifying accounts and reserves from charge to cost and expense. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 4 -Subparagraph (SX 210.12-09(Column C)(1)) -URI http://asc.fasb.org/extlink&oid=120395691&loc=d3e24092-122690 + Details
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- Definition Amount of increase in valuation and qualifying accounts and reserves from charge to accounts other than cost and expense. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 4 -Subparagraph (SX 210.12-09(Column C)(2)) -URI http://asc.fasb.org/extlink&oid=120395691&loc=d3e24092-122690 + Details
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