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Represents the quantification of the effect of adopting the new accounting standard or change in accounting principle expected by the entity to have a significant effect on the entity's financial statements.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Number of operating segments. An operating segment is a component of an enterprise: (a) that engages in business activities from which it may earn revenues and incur expenses (including revenues and expenses relating to transactions with other components of the same enterprise), (b) whose operating results are regularly reviewed by the enterprise's chief operating decision maker to make decisions about resources to be allocated to the segment and assess its performance, and (c) for which discrete financial information is available. An operating segment may engage in business activities for which it has yet to earn revenues, for example, start-up operations may be operating segments before earning revenues.

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Amount of income (expense) related to nonoperating activities, classified as other.

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The amount of the gain recorded in connection with the transaction involving the sale of property to another party and the lease of the property back to the seller to be recognized in future periods.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 840
-SubTopic 40
-Section 25
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=77913853&loc=d3e49567-112750

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The aggregate total costs related to selling a firm's product and services, as well as all other general and administrative expenses. Direct selling expenses (for example, credit, warranty, and advertising) are expenses that can be directly linked to the sale of specific products. Indirect selling expenses are expenses that cannot be directly linked to the sale of specific products, for example telephone expenses, Internet, and postal charges. General and administrative expenses include salaries of non-sales personnel, rent, utilities, communication, etc.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.4)
-URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688

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-Name Accounting Standards Codification
-Topic 330
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-Section 30
-Paragraph 8
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Summary of Significant Accounting Policies (Details) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2018 USD ($)	Jun. 30, 2017 USD ($)	Jun. 30, 2018 USD ($) Segment	Jun. 30, 2017 USD ($)	Dec. 31, 2017 USD ($)
Accounting Policies [Abstract]
Number of operating segments \| Segment			2
Deferred gain on sale-leaseback transactions					$ 10.6
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Selling, engineering, general and administrative expenses	$ 40.7	$ 34.8	$ 82.5	$ 66.2
Other expense (income), net	$ 0.4	(0.1)	$ 0.5	(0.3)
ASU 2017-07 \| Selling, engineering, general and administrative expenses
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Impact of Adoption		(0.1)		(0.2)
ASU 2017-07 \| Other expense (income), net
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Impact of Adoption		0.1		0.2
As Reported
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Selling, engineering, general and administrative expenses		34.9		66.4
Other expense (income), net		$ (0.2)		$ (0.5)