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Leases, Schedule of Lease Assets and Liabilities (Details) - USD ($) $ in Millions | Jun. 30, 2019 | Dec. 31, 2018
--- | --- | ---
Leases [Abstract] |  |
Operating lease assets | $ 26.8 | $ 0.0
Finance lease assets | 6.9 |
Total lease assets | 33.7 |
Operating lease liabilities, current | 3.6 |
Finance lease liabilities, current | 1.2 |
Operating lease liabilities, noncurrent | 26.0 | $ 0.0
Finance lease liabilities, noncurrent | 5.7 |
Total lease liabilities | $ 36.5 |

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- Definition Present value of lessee's discounted obligation for lease payments from finance lease, classified as current. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 45 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=77888419&loc=SL77918627-209977 + Details
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