| **Income Taxes (Narrative) (Details)In Millions, unless otherwise specified**           | 12 Months Ended |        | 3 Months Ended | 12 Months Ended |
|-----------------------------------------------------------------------------------------|-----------------|--------|----------------|-----------------|
||
| **Valuation Allowance [Line Items]**                                                    |            |   |           |            |   |   |   |   |   |   |   |
| Income tax expense (benefit)                                                            | $ (121.4)       | $ 24.3 | $ 30.7         |            |   |   |   |   |   |   |   |
| Income (loss) from continuing operations before income tax                              | (4.4)           | 42.9   | 38.5           |            |   |   |   |   |   |   |   |
| Correction of deferred tax error on foreign subsidiary                                  | 0.8             | 0      | (2.8)          |            |   |   |   |   |   |   |   |
| Effective tax rate                                                                      |            | 56.60% | 79.70%         |            |   |   |   |   |   |   |   |
| Change in deferred tax asset                                                            |            |   |           |            | 126.1 | 19.0 |   |   |   |   |   |
| Decrease in valuation allowances                                                        | (145.1)         | 5.4    | 15.7           |            |   |   |   |   |   |   |   |
| Reversal of Valuation Reserve in the UK                                                 |            | 2.8    |           |            |   |   |   |   |   |   |   |
| Effective tax rate, discontinued operations                                             | 25.60%          | 13.40% | 29.60%         |            |   |   |   |   |   |   |   |
| Unrealized foreign currency gain on intercompany debt                                   | (7.7)           | 0.9    | 8.6            |            |   |   |   |   |   |   |   |
| Statutes of limitation, period                                                          |            |   |           |            |   |   | 3 years | 5 years |   |   |   |
| Operating loss carryforwards                                                            | 404.5           |   |           |            |   |   |   |   |   |   |   |
| Undistributed earnings of foreign subsidiaries                                          | 586             | 517    |           |            |   |   |   |   |   |   |   |
| Unrecognized tax benefits, income tax penalties and interest accrued                    | 1.4             |   |           |            |   |   |   |   |   |   |   |
| Unrecognized tax benefits                                                               | 56.3            | 5.5    | 5.7            | 6.0             |   |   |   |   |   |   |   |
| Unrecognized tax benefits that would impact effective tax rate                          | 51.6            |   |           |            |   |   |   |   |   |   |   |
| Potential tax assessment                                                                |            |   |           |            |   |   |   |   | 13.2 | 26.9 | 44.5 |
| Potential tax assessment, accrued reserve related to fair value of liabilities acquired |            |   |           |            |   |   |   |   |   |   | 43.3 |
| Potential tax assessment, accrued interest                                              |            |   |           |            |   |   |   |   |   |   | $ 1.2 |

| X                                                                                                                                                                                                                                                                               |
|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
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Effective Income Tax Rates, Discontinued Operations
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Income Tax Reconciliation, Correction of Deferred Tax Error
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Reversal of Valuation Reserve in the UK
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Statute of Limitation, Period
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| - Definition
A ratio calculated by dividing the reported amount of income tax expense attributable to continuing operations for the period by GAAP-basis pretax income from continuing operations.
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| - Definition
This element represents the income or loss from continuing operations attributable to the economic entity which may also be defined as revenue less expenses from ongoing operations, after income or loss from equity method investments, but before income taxes, extraordinary items, and noncontrolling interest.
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|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
The sum of the current income tax expense or benefit and the deferred income tax expense or benefit pertaining to continuing operations.
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|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
The portion of the difference between total income tax expense or benefit as reported in the Income Statement and the expected income tax expense or benefit computed by applying the domestic federal statutory income tax rates to pretax income from continuing operations attributable to changes in the valuation allowance for deferred tax assets in the period.
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|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
The sum of domestic, foreign and state and local operating loss carryforwards, before tax effects, available to reduce future taxable income under enacted tax laws.
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| - Definition
Amount of undistributed earnings of foreign subsidiaries intended to be permanently reinvested outside the United States that are not subject to U.S. federal income taxes.
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| - Definition
The gross amount of unrecognized tax benefits pertaining to uncertain tax positions taken in tax returns as of the balance sheet date.
+ References
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|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
This element represents the total of accruals as of the date of the statement of financial position for interest recognized for an underpayment of income taxes computed by applying the applicable statutory rate of interest to the difference between a tax position recognized for financial reporting purposes and the amount previously taken or expected to be taken in a tax return of the entity and the amount of statutory penalties for a tax position claimed or expected to be claimed by the entity, in its tax return, that does not meet the minimum statutory threshold to avoid payment of penalties.
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| - Definition
The total amount of unrecognized tax benefits that, if recognized, would affect the effective tax rate.
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| - Definition
The amount of the change in the period in the valuation allowance for a specified deferred tax asset.
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