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v3.20.4

Income Taxes - Narrative (Details) - USD ($) $ in Millions | 3 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Dec. 31, 2020 | Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Income Taxes [Line Items] |  |  |  |  |
Tax benefit adjustment to the provisional income tax expense |  |  |  | $ 5.3 |
Unrecognized net operating loss carryforwards, foreign |  | $ 5.3 | $ 1.8 | 7.1 |
Income tax benefit |  | 93.9 | 146.1 | 311.9 |
Tax credit, research and development |  |  | 28.6 |  |
Foreign jurisdictions income with tax holidays |  | 29.4 | 89.4 | 107.1 |
Valuation allowance for deferred tax assets | $ 397.7 | 397.7 | 344.8 |  |
Valuation allowance, increase (decrease) | 16.7 | $ 52.9 |  |  |
Income tax rate deduction dividend percent |  | 100.00% |  |  |
Tax loss carryforwards | 1,800.0 | $ 1,800.0 |  |  |
Tax loss carryforwards with no expiration date | 1,500.0 | 1,500.0 |  |  |
Tax loss carryforwards with expiration date | 247.9 | 247.9 |  |  |
Tax credit carryforwards | 280.6 | 280.6 |  |  |
Equity | 4,614.9 | 4,614.9 | 4,501.1 | 4,360.6 | $ 4,292.6
Unrecognized tax benefits | 36.4 | 36.4 | 31.6 | 36.7 | 33.2
Unrecognized tax benefits, interest and penalties | 12.2 | 12.2 | 11.5 |  |
Decrease in unrecognized tax benefits, reasonably possible during the next twelve months | 8.4 | 8.4 |  |  |
Retained Earnings |  |  |  |  |
Income Taxes [Line Items] |  |  |  |  |
Equity | 4,806.8 | 4,806.8 | 4,715.8 | $ 4,113.6 | 4,171.9
Cumulative Effect, Period of Adoption, Adjustment |  |  |  |  |
Income Taxes [Line Items] |  |  |  |  |
Equity | (0.8) | (0.8) |  |  | 2.3
Cumulative Effect, Period of Adoption, Adjustment | Retained Earnings |  |  |  |  |
Income Taxes [Line Items] |  |  |  |  |
Equity |  |  | $ (0.8) |  | $ 2.3
U.S. |  |  |  |  |
Income Taxes [Line Items] |  |  |  |  |
Valuation allowance for deferred tax assets | 18.8 | 18.8 |  |  |
Foreign tax credits | 114.9 | 114.9 |  |  |
Tax credit carryforwards, research | 120.1 | 120.1 |  |  |
International Jurisdictions |  |  |  |  |
Income Taxes [Line Items] |  |  |  |  |
Income tax benefit |  | 15.5 |  |  |
Valuation allowance for deferred tax assets | 378.9 | 378.9 |  |  |
Tax credit carryforwards, other | $ 45.6 | $ 45.6 |  |  |

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