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Tax Cuts and Jobs Act (Narrative) (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Tax Cuts and Jobs Act [Line Items] |  |  |
Transition tax | $ 5.8 | $ 108.3 | $ 0.0
Change in enacted tax rate | 8.3 | 107.6 | $ 0.7
Net adjustment for provisional amounts recorded under Tax Cuts and Jobs Act | $ 2.5 |  |
Transition Tax [Domain] |  |  |
Tax Cuts and Jobs Act [Line Items] |  |  |
Other Tax Expense (Benefit) |  | 108.0 |
Tax Cuts and Jobs Act [Domain] |  |  |
Tax Cuts and Jobs Act [Line Items] |  |  |
Other Tax Expense (Benefit) |  | (20.0) |
Remeasurement of net deferred tax liabilities due to change in tax rate [Domain] |  |  |
Tax Cuts and Jobs Act [Line Items] |  |  |
Other Tax Expense (Benefit) |  | 110.0 |
Reduction of Deferred Tax Liability on Foreign Earnings [Domain] |  |  |
Tax Cuts and Jobs Act [Line Items] |  |  |
Other Tax Expense (Benefit) |  | $ 18.0 |

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- Definition Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations, attributable to increase (decrease) in the income tax rates. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 13 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32698-109319 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 45 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=84176650&loc=d3e32059-109318 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32687-109319 + Details
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