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Basis of Presentation and Accounting Policies (Details) € in Millions, $ in Millions | 1 Months Ended | 3 Months Ended
--- | --- | ---
Apr. 30, 2018 USD ($) | Apr. 30, 2018 EUR (€) | Mar. 31, 2017 USD ($) | Mar. 31, 2017 EUR (€) | Sep. 30, 2018
Fair Value Inputs, Assets, Quantitative Information [Line Items] |  |  |  |  |
Net proceeds from sale of tax credits | $ 234.5 | € 190.9 | $ 143.5 | € 133.0 |
Goodwill | Minimum |  |  |  |  |
Fair Value Inputs, Assets, Quantitative Information [Line Items] |  |  |  |  |
Discount rates |  |  |  |  | 10.60%
Goodwill | Maximum |  |  |  |  |
Fair Value Inputs, Assets, Quantitative Information [Line Items] |  |  |  |  |
Discount rates |  |  |  |  | 14.20%

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- Definition Interest rate used to find the present value of an amount to be paid or received in the future as an input to measure fair value. For example, but not limited to, weighted average cost of capital (WACC), cost of capital, cost of equity and cost of debt. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (bbb) -URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19207-110258 + Details
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- Definition Amount of cash inflow from the sale of receivables classified as other. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3179-108585 + Details
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