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Income Taxes - Narrative (Details) - USD ($) $ in Millions |  | 12 Months Ended |
--- | --- | --- | ---
Dec. 22, 2018 | Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Income Taxes [Line Items] |  |  |  |  |
Provisional tax expense (benefit) | $ 31.8 |  |  | $ (449.9) |
Executive compensation deduction |  |  | $ 1.8 |  |
Expense for mandatory repatriation tax | 1.5 |  | $ 1.5 | $ 207.1 |
Effective income tax rate (benefit) (as a percent) |  | 22.70% | 16.60% | (48.50%) |
Balance of unrecognized tax benefit |  | $ 130.0 | $ 112.2 | $ 114.8 | $ 136.7
Unrecognized tax position, that would affect the annual effective tax rate |  | 97.2 |  |  |
Unrecognized Tax Benefits that would impact Deferred Taxes |  | 32.8 |  |  |
Estimate of decrease in unrecognized tax positions |  | 1.5 |  |  |
Interest and penalties tax benefit |  |  | 0.8 |  |
Interest and penalties tax expense |  |  |  | 1.5 |
Accrued interest and penalties |  | 5.1 | 5.1 | $ 5.9 |
Federal |  |  |  |  |
Income Taxes [Line Items] |  |  |  |  |
Net operating loss carryforwards |  | 521.9 | 768.9 |  |
Tax credit carryforwards |  | 134.5 | 83.7 |  |
State |  |  |  |  |
Income Taxes [Line Items] |  |  |  |  |
Net operating loss carryforwards |  | 825.8 | 801.0 |  |
Tax credit carryforwards |  | 138.6 | 115.8 |  |
Foreign |  |  |  |  |
Income Taxes [Line Items] |  |  |  |  |
Executive compensation deduction | $ 1.8 |  |  |  |
Net operating loss carryforwards |  | 757.1 | 734.4 |  |
Tax credit carryforwards |  | 76.8 | $ 68.8 |  |
National Tax Agency, Japan |  |  |  |  |
Income Taxes [Line Items] |  |  |  |  |
Valuation allowance |  | $ 186.3 |  |  |

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- Definition Tax Cuts And Jobs Act Of 2017, Incomplete Accounting, Transition Tax For Accumulated Foreign Earnings, Provisional Executive Income Tax Expense + References No definition available. + Details
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