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Income Taxes (as restated) - Narrative (Details) - USD ($) $ in Millions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Income Tax Contingency [Line Items] |  |  |  |
Effective income tax rate | (28.60%) | (35.00%) | (18.40%) |
Tax Cuts and Jobs Act, measurement period adjustment, income tax benefit |  |  | $ 14.1 |
Tax Cuts and Jobs Act, measurement period adjustment, income tax expense, transition tax |  |  | 15.9 |
Tax Cuts and Jobs Act, Transition Tax for Accumulated Foreign Earnings, Liability |  |  | 12.1 | $ 28.0
Undistributed earnings of foreign subsidiaries |  |  | 78.2 | $ 180.4
Tax Cuts And Jobs Act, measurement period adjustment, income tax expense, remeasurement of deferred tax assets and liabilities |  |  | 1.4 |
Tax Cuts And Jobs Act, measurement period adjustment, income tax expense, change in valuation allowance |  |  | 0.4 |
Deferred tax liability, foreign | $ 38.0 | $ 45.1 |  |
Indemnification receivable for income taxes incurred prior to separation | 15.7 |  |  |
Unrecognized tax benefits that would impact effective tax rate | 56.4 |  |  |
Unrecognized tax benefits, amount that would be charged to other expense upon reversal of indemnification receivable | 15.7 |  |  |
Unrecognized tax benefits, income tax penalties and interest accrued | 12.4 | $ 7.1 | $ 6.2 |
Domestic Tax Authority |  |  |  |
Income Tax Contingency [Line Items] |  |  |  |
Operating loss carryforwards | 318.8 |  |  |
State and Local Jurisdiction |  |  |  |
Income Tax Contingency [Line Items] |  |  |  |
Operating loss carryforwards | 594.9 |  |  |
Foreign Tax Authority |  |  |  |
Income Tax Contingency [Line Items] |  |  |  |
Operating loss carryforwards | 281.9 |  |  |
Capital loss carryforwards | $ 71.2 |  |  |

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- Definition Amount of deferred tax liability attributable to taxable temporary differences from undistributed earnings of subsidiary and other recognized entity not within country of domicile. Includes, but is not limited to, other basis differences. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32621-109319 + Details
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- Definition Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32687-109319 + Details
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- Definition Amount of income tax expense (benefit) for measurement period adjustment from accounting for tax effect pursuant to Tax Cuts and Jobs Act. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section S99 -Paragraph 2A -Subparagraph (SAB Topic 5.EE.Q2(f)) -URI http://asc.fasb.org/extlink&oid=116825942&loc=SL116722634-122817 + Details
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