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Basis of Presentation and Significant Accounting Policies - Policies (Details) - USD ($) $ in Millions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016 | Jan. 01, 2019
Basis of Presentation and Significant Accounting Policies |  |  |  |
Cash receipts of retained beneficial interests in receivable sales | $ 369.8 | $ 338.8 | $ 154.5 |
Other Investments |  |  |  |
Other investments | $ 73.7 | $ 70.9 |  |
ASU 2016-02 | Subsequent Event | Forecast |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |
Right of use asset |  |  |  | $ 170.0
Lease payable obligation |  |  |  | $ 210.0

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