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Unrecognized Tax Benefits and Tax Reform (Details) - USD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward] |  |  |
Balance at January 1 | $ 6.9 | $ 7.0 | $ 5.3
Additions based on tax positions related to the current year | 0.0 | 0.0 | 0.4
Additions for tax positions of prior years | 0.6 | 0.8 | 1.6
Reductions for tax positions of prior years | 0.0 | 0.0 | 0.0
Reductions for expirations of statute of limitations | (1.4) | (0.9) | (0.3)
Settlements | (0.6) | 0.0 | 0.0
Balance at December 31 | 5.5 | 6.9 | 7.0
Unrecognized tax benefits, accumulated interest and penalties | 9.6 | 9.1 | 8.4
Deferred tax assets related to unrecognized tax benefits | 3.4 | 3.6 | 3.4
Net unrecognized tax benefits, associated interest, penalties and deferred tax asset that if resolved would impact effective tax rate | 11.7 | 12.4 | 12.0
Recognized interest and penalties | $ 0.4 | $ 0.6 | $ 0.7

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- Definition Amount of unrecognized tax benefits. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 45 -Paragraph 10B -URI https://asc.fasb.org/extlink&oid=123427490&loc=SL37586934-109318 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15A -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=121826272&loc=SL6600010-109319 + Details
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- Definition Amount of decrease in unrecognized tax benefits resulting from tax positions taken in prior period tax returns. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15A -Subparagraph (a)(1) -URI https://asc.fasb.org/extlink&oid=121826272&loc=SL6600010-109319 + Details
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