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Income Taxes - Reconciliation of Statutory Tax Rate to Effective Tax Rate (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Reconciliation in dollars [Abstract] |  |  |
Statutory U.S. federal income tax | $ 55.8 | $ 34.6 | $ 75.4
State income taxes, net of federal benefit | 8.7 | 1.8 | (0.6)
Foreign tax differential | 2.1 | 2.5 | (11.9)
Change in valuation allowances | (8.6) | (17.7) | 5.6
Uncertain tax positions and interest | 2.4 | 33.1 | (1.0)
Subpart F income | 11.0 | 6.6 | 2.7
Manufacturing deduction | 0.0 | 0.0 | (1.9)
Remeasurement of deferred taxes | 0.0 | 0.0 | (69.7)
Transition Tax | 0.0 | (6.8) | 45.9
Permanent and other | 3.3 | (4.5) | (0.7)
Effective income tax provision | $ 74.7 | $ 49.6 | $ 43.8
Reconciliation in percentages [Abstract] |  |  |
Statutory U.S. federal income tax (percentage) | 21.00% | 21.00% | 35.00%
State income taxes, net of federal benefit (percentage) | 3.30% | 1.10% | (0.30%)
Foreign tax differential (percentage) | 0.80% | 1.50% | (5.50%)
Change in valuation allowance (percentage) | (3.20%) | (10.70%) | 2.60%
Uncertain tax positions (percentage) | 0.90% | 20.10% | (0.50%)
Subpart F income (percentage) | 4.10% | 4.00% | 1.20%
Manufacturing deduction (percentage) | 0.00% | 0.00% | (0.90%)
Tax reform tax rate change (percentage) | 0.00% | 0.00% | (32.30%)
Transition Tax (percentage) | 0 | (0.041) | 0.213
Permanent and other (percentage) | 1.20% | (2.80%) | (0.30%)
Effective income tax provision (percentage) | 28.10% | 30.10% | 20.30%

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- Definition Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to increase (decrease) in foreign income tax contingency. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 13 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32698-109319 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -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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