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Summary of Significant Accounting Policies (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013
Inventories
Percentage of the company's inventories valued using the first-in, first-out (FIFO) method	84.00%us-gaap_PercentageOfFIFOInventory	87.00%us-gaap_PercentageOfFIFOInventory
Increase in inventories if the FIFO inventory valuation method had been used exclusively	36.2us-gaap_ExcessOfReplacementOrCurrentCostsOverStatedLIFOValue	$ 36.2us-gaap_ExcessOfReplacementOrCurrentCostsOverStatedLIFOValue
Engineering drawings
Estimated useful lives of other intangible assets
Finite-Lived Intangible Asset, Useful Life	15 years
Minimum | Patents
Estimated useful lives of other intangible assets
Finite-Lived Intangible Asset, Useful Life	10 years
Minimum | Customer relationships
Estimated useful lives of other intangible assets
Finite-Lived Intangible Asset, Useful Life	10 years
Maximum | Patents
Estimated useful lives of other intangible assets
Finite-Lived Intangible Asset, Useful Life	20 years
Maximum | Customer relationships
Estimated useful lives of other intangible assets
Finite-Lived Intangible Asset, Useful Life	20 years

X

- Definition

The excess of replacement or current cost over the stated LIFO (last in first out) inventory value when the LIFO inventory method is utilized.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.6(c))

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 6

-Subparagraph c

-Article 5

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- Definition

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.

+ References

No definition available.

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- Definition

The percentage of FIFO (first in first out) inventory to total inventory as of the balance sheet date if other than 100 percent.

+ References

No definition available.

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