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Income Taxes - Tax Provision (Benefit), Reconciliation, and Tax Rates (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Income Tax Disclosure [Abstract] |  |  |  |
United States | $ 51.2 | $ (59.1) | $ (63.6) |
Foreign | 110.5 | 296.4 | 248.5 |
Income (loss) before income taxes | 161.7 | 237.3 | 184.9 |
Current: |  |  |  |
U.S. federal statutory tax | 10.1 | (4.0) | 8.2 |
State | 2.6 | 1.6 | (1.6) |
Foreign | 42.9 | 35.9 | 46.3 |
Total current income tax provision (benefit) | 55.6 | 33.5 | 52.9 |
Deferred: |  |  |  |
U.S. federal statutory tax | 0.0 | 11.0 | 4.0 |
State | 0.0 | 4.6 | (6.2) |
Foreign | (14.4) | (12.2) | (1.0) |
Total deferred income (loss) before income taxes | (14.4) | 3.4 | (3.2) |
Non-current tax expense (income) | 10.9 | 19.3 | 6.2 |
Income tax provision | $ 52.1 | $ 56.2 | $ 55.9 | $ 149.2
Reconciliation of U.S. federal statutory income tax rate to effective income tax rate |  |  |  |
U.S. federal statutory tax rate | 21.00% | 21.00% | 21.00% |
Foreign earnings, net of foreign taxes | (13.30%) | (13.80%) | (11.60%) |
State income taxes, net of U.S. federal income tax benefit | 1.30% | 2.20% | (3.30%) |
U.S. tax on deemed dividends | 0.00% | 0.90% | (0.40%) |
Tax Act - Transition Tax | (0.007) | 0.005 | 0.007 |
Tax Reform - GILTI | 0.50% | 6.00% | 9.70% |
Tax Reform - BEAT | 1.40% | 0.10% | 2.80% |
Deferred tax impact on foreign unrepatriated earnings | (0.90%) | 0.50% | (1.00%) |
Goodwill impairment | 0.00% | 0.00% | 0.00% |
Uncertain tax positions | 6.80% | 8.20% | 3.40% |
Foreign currency adjustments | (2.10%) | (6.10%) | 2.20% |
Intercompany interest transfer pricing adjustment | 2.00% | 1.40% | 1.50% |
Nontaxable interest income | (3.00%) | (2.30%) | (2.70%) |
Nondeductible interest expense | 1.90% | 1.80% | 0.00% |
Valuation allowance | 10.60% | 1.20% | 3.00% |
Sale of Company | 3.00% | 0.00% | 0.00% |
Non-deductible Officer Compensation | 1.20% | 0.50% | 0.10% |
Other permanent differences | 2.50% | 1.60% | 4.80% |
Effective income tax rate | 32.20% | 23.70% | 30.20% | (707.10%)

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- Definition The portion of earnings or loss from continuing operations before income taxes that is attributable to foreign operations, which is defined as Income or Loss generated from operations located outside the entity's country of domicile. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(h)(1)(i)) -URI http://asc.fasb.org/extlink&oid=120395691&loc=d3e23780-122690 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 6.I.Fact.3) -URI http://asc.fasb.org/extlink&oid=116825942&loc=d3e330036-122817 + Details
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