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v3.19.2

Basis of Presentation Basis of Presentation - Revision of Previously Issued Financial Statements (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended |  |  |  |
--- | --- | --- | --- | --- | --- | ---
Jun. 30, 2019 | Jun. 30, 2018 | Jun. 30, 2019 | Jun. 30, 2018 | Mar. 31, 2019 | Dec. 31, 2018 | Mar. 31, 2018 | Dec. 31, 2017
Error Corrections and Prior Period Adjustments Restatement [Line Items] |  |  |  |  |  |  |  |
Change in fair value | $ (80.4) | $ (24.1) | $ (100.7) | $ (66.3) |  |  |  |
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest | 1,583.8 | 1,464.0 | 1,583.8 | 1,464.0 | $ 1,616.5 | $ 1,557.0 | $ 1,409.9 | $ 1,395.4
Capital in Excess of Par Value |  |  |  |  |  |  |  |
Error Corrections and Prior Period Adjustments Restatement [Line Items] |  |  |  |  |  |  |  |
Change in fair value | (80.4) | (24.1) | (100.7) | (66.3) |  |  |  |
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest | 2,455.6 | 2,645.9 | 2,455.6 | 2,645.9 | 2,551.3 | 2,588.7 | 2,685.9 | 2,747.4
Accumulated Deficit |  |  |  |  |  |  |  |
Error Corrections and Prior Period Adjustments Restatement [Line Items] |  |  |  |  |  |  |  |
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest | $ (691.7) | (1,001.9) | $ (691.7) | (1,001.9) | $ (782.9) | $ (885.2) | $ (1,093.7) | $ (1,176.2)
As Reported [Member] |  |  |  |  |  |  |  |
Error Corrections and Prior Period Adjustments Restatement [Line Items] |  |  |  |  |  |  |  |
Change in fair value |  |  |  | (58.2) |  |  |  |
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest |  | 1,501.3 |  | 1,501.3 |  |  |  |
As Reported [Member] | Capital in Excess of Par Value |  |  |  |  |  |  |  |
Error Corrections and Prior Period Adjustments Restatement [Line Items] |  |  |  |  |  |  |  |
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest |  | 2,698.0 |  | 2,698.0 |  |  |  |
As Reported [Member] | Accumulated Deficit |  |  |  |  |  |  |  |
Error Corrections and Prior Period Adjustments Restatement [Line Items] |  |  |  |  |  |  |  |
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest |  | (1,016.7) |  | (1,016.7) |  |  |  |
Adjustment [Member] |  |  |  |  |  |  |  |
Error Corrections and Prior Period Adjustments Restatement [Line Items] |  |  |  |  |  |  |  |
Change in fair value |  |  |  | (8.1) |  |  |  |
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest |  | (37.3) |  | (37.3) |  |  |  |
Adjustment [Member] | Capital in Excess of Par Value |  |  |  |  |  |  |  |
Error Corrections and Prior Period Adjustments Restatement [Line Items] |  |  |  |  |  |  |  |
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest |  | (52.1) |  | (52.1) |  |  |  |
Adjustment [Member] | Accumulated Deficit |  |  |  |  |  |  |  |
Error Corrections and Prior Period Adjustments Restatement [Line Items] |  |  |  |  |  |  |  |
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest |  | $ 14.8 |  | $ 14.8 |  |  |  |

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