v3.10.0.1

Income Taxes (Narrative) (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended | 12 Months Ended |
--- | --- | --- | --- | ---
Mar. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2018 | Dec. 31, 2017 | Jun. 30, 2018
Income Taxes [Line Items] |  |  |  |  |
2017 U.S. Tax Cuts and Jobs Act, provisional liability recorded |  |  |  |  | $ 289.6
Unrecognized tax benefits |  |  |  |  | 585.1
Unrecognized tax benefits that would have a favorable impact |  |  |  |  | 425.9
Decrease in unrecognized tax benefits reasonable possible amount |  |  |  |  | $ 125.0
Domestic Tax Authority |  |  |  |  |
Income Taxes [Line Items] |  |  |  |  |
Income tax rate | 20.00% | 19.00% |  | 19.25% |
Forecast | Domestic Tax Authority |  |  |  |  |
Income Taxes [Line Items] |  |  |  |  |
Income tax rate |  |  | 19.00% |  |

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- Definition Tax Cuts and Jobs Act of 2017, Incomplete Accounting, Transition Tax for Accumulated Foreign Earnings, Provisional Liability + References No definition available. + Details
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- Definition Amount of decrease reasonably possible in the next twelve months for the unrecognized tax benefit. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (d)(3) -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32718-109319 + Details
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