Number of customers accounted for significant percentage of net sales volume.

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Payment terms on sales.

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Settlement of retiree projected benefit obligations.

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Significant accounting policies.

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For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

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Date the declared dividend will be paid, in CCYY-MM-DD format.

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The per share amount of a dividend declared, but not paid, as of the financial reporting date.

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Date the dividend to be paid was declared, in CCYY-MM-DD format.

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Date the holder must own the stock to be entitled to the dividend, in CCYY-MM-DD format.

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No definition available.

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Present value of lessee's discounted obligation for lease payments from finance lease.

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Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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No definition available.

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Present value of lessee's discounted obligation for lease payments from operating lease.

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

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Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

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No definition available.

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Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

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Summary of Significant Accounting Policies (Narrative) (Details)		12 Months Ended
	Feb. 20, 2020 USD ($)	Dec. 31, 2019 USD ($) customer	Dec. 31, 2018 USD ($) customer	Dec. 31, 2017 USD ($) customer	Feb. 19, 2020 $ / shares	Jan. 01, 2019 USD ($)
Significant Accounting Policies [Line Items]
Payment terms on sales		45 days
Gross sales		$ 1,038,100,000	$ 975,300,000	$ 893,600,000
Dividends payable, date declared		Feb. 19, 2020
Dividends payable, date to be paid		Mar. 20, 2020
Dividends payable, date of record		Mar. 05, 2020
Lease right-of-use assets		$ 35,300,000				$ 29,200,000
Lease liabilities		35,300,000
Finance lease, liabilities		$ 0
Accounting Standards Update 2016-02 [Member]
Significant Accounting Policies [Line Items]
Lease right-of-use assets						29,200,000
Lease liabilities						$ 29,200,000
Subsequent Event [Member]
Significant Accounting Policies [Line Items]
Dividends declared per common share outstanding \| $ / shares					$ 0.20
Subsequent Event [Member] \| Retirement Income Plan (RIP) [Member]
Significant Accounting Policies [Line Items]
Benefits paid	$ 1,000,000,000.0
Developed Technology [Member]
Significant Accounting Policies [Line Items]
Definite-lived intangible assets, useful life		15 years
Minimum [Member] \| Customer Relationships [Member]
Significant Accounting Policies [Line Items]
Definite-lived intangible assets, useful life		3 years
Minimum [Member] \| Machinery And Equipment [Member]
Significant Accounting Policies [Line Items]
Useful Life		3 years
Minimum [Member] \| Computer Equipment [Member]
Significant Accounting Policies [Line Items]
Useful Life		3 years
Minimum [Member] \| Office Furniture And Equipment [Member]
Significant Accounting Policies [Line Items]
Useful Life		5 years
Minimum [Member] \| Dryer Components [Member]
Significant Accounting Policies [Line Items]
Useful Life		3 years
Minimum [Member] \| Heavy Production Equipment [Member]
Significant Accounting Policies [Line Items]
Useful Life		13 years
Minimum [Member] \| Buildings [Member]
Significant Accounting Policies [Line Items]
Useful Life		15 years
Minimum [Member] \| Computer Software [Member]
Significant Accounting Policies [Line Items]
Useful Life		3 years
Maximum [Member] \| Customer Relationships [Member]
Significant Accounting Policies [Line Items]
Definite-lived intangible assets, useful life		20 years
Maximum [Member] \| Machinery And Equipment [Member]
Significant Accounting Policies [Line Items]
Useful Life		15 years
Maximum [Member] \| Computer Equipment [Member]
Significant Accounting Policies [Line Items]
Useful Life		5 years
Maximum [Member] \| Office Furniture And Equipment [Member]
Significant Accounting Policies [Line Items]
Useful Life		7 years
Maximum [Member] \| Dryer Components [Member]
Significant Accounting Policies [Line Items]
Useful Life		7 years
Maximum [Member] \| Heavy Production Equipment [Member]
Significant Accounting Policies [Line Items]
Useful Life		15 years
Maximum [Member] \| Buildings [Member]
Significant Accounting Policies [Line Items]
Useful Life		30 years
Maximum [Member] \| Computer Software [Member]
Significant Accounting Policies [Line Items]
Useful Life		7 years
Gross Sales [Member] \| Concentration Risk On Three Customers [Member]
Significant Accounting Policies [Line Items]
Number of customers accounted for significant percentage of net sales \| customer		2	3	3
Gross sales		$ 428,700,000	$ 459,300,000	$ 426,100,000
Gross Sales [Member] \| Geographic Concentration Risk [Member]
Significant Accounting Policies [Line Items]
Concentration risk, percentage		10.00%	10.00%	10.00%