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Other Intangible Assets (Details Textual) (USD $) In Millions, unless otherwise specified	3 Months Ended				3 Months Ended									3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012	Dec. 31, 2012	Dec. 31, 2011	Mar. 31, 2013 Internally Developed Software and Other Costs [Member]	Mar. 31, 2012 Internally Developed Software and Other Costs [Member]	Mar. 31, 2013 Others [Member]	Mar. 31, 2013 Cost of goods sold [Member] Others [Member]	Mar. 31, 2012 Cost of goods sold [Member] Others [Member]	Mar. 31, 2013 Selling, general and administrative expenses [Member] Others [Member]	Mar. 31, 2012 Selling, general and administrative expenses [Member] Others [Member]	Mar. 31, 2013 Strata [Member]	Dec. 24, 2012 Strata [Member]	Mar. 31, 2013 Strata [Member] Customer relationships [Member]	Mar. 31, 2013 Strata [Member] Non-compete agreements [Member]	Mar. 31, 2013 Strata [Member] Technology [Member]	Mar. 31, 2013 Strata [Member] Cost of goods sold [Member] Technology [Member]	Mar. 31, 2012 Strata [Member] Cost of goods sold [Member] Technology [Member]	Mar. 31, 2013 Strata [Member] Selling, general and administrative expenses [Member] Customer relationships [Member]	Mar. 31, 2012 Strata [Member] Selling, general and administrative expenses [Member] Customer relationships [Member]	Mar. 31, 2013 Strata [Member] Selling, general and administrative expenses [Member] Non-compete agreements [Member]	Mar. 31, 2012 Strata [Member] Selling, general and administrative expenses [Member] Non-compete agreements [Member]
Intangible Assets (Textual) [Abstract]
Intangible asset	$ 108.3	$ 53.7	$ 106.2	$ 51.2	$ 12.2	$ 5.6	$ 48.1
Amortization expense	2.1	1.0			0	0		0.6	0.6	0.4	0.4						0.3	0	0.6	0	0.2	0
Assets being amortized duration							13 years
Percentage of voting equity interest acquired													100.00%
Allocation of purchase price to other intangible assets												$ 48.0		$ 28.2	$ 1.5	$ 18.3
Weighted average expected life												13 years 1 month 6 days		11 years 6 months 0 days	2 years	16 years 6 months 0 days

X

- Definition

Weighted average amortization period of finite-lived intangible assets acquired either individually or as part of a group of assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 30

-Section 50

-Paragraph 1

-Subparagraph (a)(3)

-URI http://asc.fasb.org/extlink&oid=7658586&loc=d3e16265-109275

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- Definition

The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

+ References

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 142

-Paragraph 45

-Subparagraph a(2)

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.



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Percentage of voting equity interests acquired in the business combination.

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Amount of acquisition cost of a business combination allocated to assets, excluding financial assets and goodwill, lacking physical substance.

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Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

+ References

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-Publisher FASB

-Name Accounting Standards Codification

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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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