Leases - Position of Leases (Details) - USD ($) $ in Millions	Mar. 31, 2019	Dec. 31, 2018
Assets
Operating lease assets	$ 67.9	$ 0.0
Finance lease assets	26.5
Total lease assets	94.4
Current
Operating	12.8	0.0
Finance	6.6
Noncurrent
Operating	55.9	$ 0.0
Finance	12.5
Total lease liabilities	$ 87.8
Weighted-average remaining lease term (in years)
Operating leases	7 years 3 months 18 days
Finance leases	4 years 2 months 12 days
Weighted-average discount rate
Operating leases	5.30%
Finance leases	3.80%

Lease, Liability

No definition available.

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- Definition

Lease, Right-of-Use Asset

+ References

No definition available.

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- Definition

Weighted-average Discount Rate [Abstract]

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No definition available.

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- Definition

Weighted-average Remaining Lease Term [Abstract]

+ References

No definition available.

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- References

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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)
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- Definition

Present value of lessee's discounted obligation for lease payments from finance lease, classified as noncurrent.

+ References

+ Details

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- Definition

Amount of lessee's right to use underlying asset under finance lease.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
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- Definition

Weighted average discount rate for finance lease calculated at point in time.

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- Definition

Weighted average remaining lease term for finance lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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- Definition

Present value of lessee's discounted obligation for lease payments from operating lease, classified as current.

+ References

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- Definition

Present value of lessee's discounted obligation for lease payments from operating lease, classified as noncurrent.

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- Definition

Amount of lessee's right to use underlying asset under operating lease.

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-Publisher FASB
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- Definition

Weighted average discount rate for operating lease calculated at point in time.

+ References

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Weighted average remaining lease term for operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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