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Schedule II - Valuation and Qualifying Accounts and Reserves (Details) - USD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Accounts receivable credit loss allowance |  |  |
Movement in Valuation Allowances and Reserves |  |  |
Balance, Beginning of Year | $ 2.0 | $ 1.9 | $ 0.5
Charged to Costs and Expenses | 0.3 | 0.1 | 1.4
Write-offs | (1.8) |  |
Balance, End of Year | 0.5 | 2.0 | 1.9
Held-to-maturity debt securities credit loss allowance |  |  |
Movement in Valuation Allowances and Reserves |  |  |
Balance, Beginning of Year | 0.5 | 0.9 | 0.0
Charged to Costs and Expenses | 0.1 | (0.4) | 0.3
Charged to Retained Earnings |  |  | 0.6
Balance, End of Year | 0.6 | 0.5 | 0.9
Deferred tax valuation allowance |  |  |
Movement in Valuation Allowances and Reserves |  |  |
Balance, Beginning of Year | 8.8 | 8.4 | 13.0
Charged to Costs and Expenses | 0.1 | 0.8 | (1.9)
Charged to Other Comprehensive Income | 0.3 | (0.4) | (2.7)
Balance, End of Year | $ 9.2 | $ 8.8 | $ 8.4

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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 https://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 https://asc.fasb.org/extlink&oid=120395691&loc=d3e24092-122690 + Details
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- Definition Amount of decrease in 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 D)) -URI https://asc.fasb.org/extlink&oid=120395691&loc=d3e24092-122690 + Details
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