Investments in and Advances to Affiliates (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Related Party Transaction [Line Items]
Payments to Acquire Interest in Joint Venture	$ 45.0
Noncontrolling Interest, Ownership Percentage by Parent	50.00%
Revenue from affiliates	$ 16.9	$ 15.5	$ 11.7
Expenses from affiliates	57.7	60.1	53.1
Due from affiliates	3.8	3.6
Due to affiliates	0.1	1.2
Cash Dividends Paid to Parent Company by Unconsolidated Subsidiaries	2.6	3.3
Income from affiliates, classified in cost of sales	(2.2)	4.0
Equity in (income) loss of unconsolidated affiliates	$ 2.9	$ 0.0	$ (5.2)
Entekra, A units [Member]
Related Party Transaction [Line Items]
Noncontrolling Interest, Ownership Percentage by Parent	80.00%
Entekra, B units [Member] [Member]
Related Party Transaction [Line Items]
Noncontrolling Interest, Ownership Percentage by Parent	60.00%

Income (Loss) from Equity Method Investments, classified in cost of sales

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- Definition

This element represents disclosure of the aggregate cash dividends paid to the entity by unconsolidated subsidiaries.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 235
-Section S99
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- Definition

The aggregate amount of receivables to be collected from related parties where one party can exercise control or significant influence over another party; including affiliates, owners or officers and their immediate families, pension trusts, and so forth, at the financial statement date. which are usually due within one year (or one business cycle).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
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- Definition

Carrying amount as of the balance sheet date of obligations due all related parties. For classified balance sheets, represents the current portion of such liabilities (due within one year or within the normal operating cycle if longer).

+ References

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- Definition

This item represents the entity's proportionate share for the period of the net income (loss) of its investee (such as unconsolidated subsidiaries and joint ventures) to which the equity method of accounting is applied. This item includes income or expense related to stock-based compensation based on the investor's grant of stock to employees of an equity method investee.

+ References

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- Definition

The parent entity's interest in net assets of the subsidiary, expressed as a percentage.

+ References

No definition available.

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- Definition

The cash outflow associated with the investment in or advances to an entity in which the reporting entity shares control of the entity with another party or group.

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- Definition

Expenses recognized resulting from transactions (excluding transactions that are eliminated in consolidated or combined financial statements) with related party.

+ References

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- Definition

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.

+ References

No definition available.

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- Definition

Amount of revenue, fees and commissions earned from transactions between (a) a parent company and its subsidiaries; (b) subsidiaries of a common parent; (c) an entity and trusts for the benefit of employees, for example, but not limited to, pension and profit-sharing trusts that are managed by or under the trusteeship of the entity's management; (d) an entity and its principal, owners, management, or members of their immediate families; and (e) affiliates.

+ References

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