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Income Taxes - Narrative (Details) $ in Millions | 3 Months Ended | 9 Months Ended
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Sep. 30, 2021 | Sep. 30, 2020 | Sep. 30, 2021 | Sep. 30, 2020 USD ($) subsidiary
Income Tax Disclosure [Abstract] |  |  |  |
Net tax benefit from CARES Act |  |  |  | $ 7.6
Current tax benefit from CARES Act |  |  |  | 18.9
Deferred tax expense from CARES Act |  |  |  | $ 11.3
Number of foreign subsidiaries | subsidiary |  |  |  | 2
Net deferred tax benefit from foreign subsidiary restructuring |  |  |  | $ 8.3
Effective tax rate | 5.30% | 17.60% | 7.50% | 9777.00%

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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=121826272&loc=d3e32687-109319 + Details
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