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4. Intangible Assets, Goodwill and Other Intangible Assets (Details) (USD $)	3 Months Ended																	3 Months Ended	12 Months Ended	3 Months Ended	12 Months Ended	3 Months Ended	12 Months Ended	3 Months Ended	12 Months Ended	3 Months Ended	12 Months Ended	3 Months Ended	12 Months Ended	3 Months Ended	12 Months Ended	3 Months Ended	12 Months Ended	3 Months Ended	12 Months Ended	3 Months Ended	12 Months Ended	3 Months Ended	12 Months Ended	3 Months Ended	12 Months Ended	3 Months Ended	12 Months Ended	3 Months Ended	12 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Dec. 31, 2013	Mar. 31, 2014 Customer Relationships [Member]	Dec. 31, 2013 Customer Relationships [Member]	Mar. 31, 2014 Know how [Member]	Dec. 31, 2013 Know how [Member]	Mar. 31, 2014 Developed Technology Rights [Member]	Dec. 31, 2013 Developed Technology Rights [Member]	Mar. 31, 2014 Licensing Agreements [Member]	Dec. 31, 2013 Licensing Agreements [Member]	Mar. 31, 2014 Trade Names [Member]	Dec. 31, 2013 Trade Names [Member]	Mar. 31, 2014 Noncompete Agreements [Member]	Dec. 31, 2013 Noncompete Agreements [Member]	Mar. 31, 2014 Other Intangible Assets [Member]	Dec. 31, 2013 Other Intangible Assets [Member]	Mar. 31, 2014 Minimum [Member] Customer Relationships [Member]	Dec. 31, 2013 Minimum [Member] Customer Relationships [Member]	Mar. 31, 2014 Minimum [Member] Know how [Member]	Dec. 31, 2013 Minimum [Member] Know how [Member]	Mar. 31, 2014 Minimum [Member] Developed Technology Rights [Member]	Dec. 31, 2013 Minimum [Member] Developed Technology Rights [Member]	Mar. 31, 2014 Minimum [Member] Licensing Agreements [Member]	Dec. 31, 2013 Minimum [Member] Licensing Agreements [Member]	Mar. 31, 2014 Minimum [Member] Trade Names [Member]	Dec. 31, 2013 Minimum [Member] Trade Names [Member]	Mar. 31, 2014 Minimum [Member] Noncompete Agreements [Member]	Dec. 31, 2013 Minimum [Member] Noncompete Agreements [Member]	Mar. 31, 2014 Minimum [Member] Other Intangible Assets [Member]	Dec. 31, 2013 Minimum [Member] Other Intangible Assets [Member]	Mar. 31, 2014 Maximum [Member] Customer Relationships [Member]	Dec. 31, 2013 Maximum [Member] Customer Relationships [Member]	Mar. 31, 2014 Maximum [Member] Know how [Member]	Dec. 31, 2013 Maximum [Member] Know how [Member]	Mar. 31, 2014 Maximum [Member] Developed Technology Rights [Member]	Dec. 31, 2013 Maximum [Member] Developed Technology Rights [Member]	Mar. 31, 2014 Maximum [Member] Licensing Agreements [Member]	Dec. 31, 2013 Maximum [Member] Licensing Agreements [Member]	Mar. 31, 2014 Maximum [Member] Trade Names [Member]	Dec. 31, 2013 Maximum [Member] Trade Names [Member]	Mar. 31, 2014 Maximum [Member] Noncompete Agreements [Member]	Dec. 31, 2013 Maximum [Member] Noncompete Agreements [Member]	Mar. 31, 2014 Maximum [Member] Other Intangible Assets [Member]	Dec. 31, 2013 Maximum [Member] Other Intangible Assets [Member]
Finite-Lived Intangible Assets, Net [Abstract]
Average Remaining Life (years)																		1 year	1 year	2 years	2 years	1 year	1 year	1 year	1 year	1 year	1 year	5 years	5 years	0 years	0 years	11 years	11 years	12 years	12 years	13 years	13 years	12 years	12 years	9 years	9 years	8 years	9 years	0 years	0 years
Purchase Price	$ 461,100,000		$ 458,600,000	$ 100,800,000	$ 99,800,000	$ 195,500,000	$ 194,600,000	$ 110,000,000	$ 109,500,000	$ 45,000,000	$ 44,900,000	$ 4,300,000	$ 4,300,000	$ 4,900,000	$ 4,900,000	$ 600,000	$ 600,000
Accumulated Amortization	(204,700,000)		(192,400,000)	(43,400,000)	(41,100,000)	(95,200,000)	(89,300,000)	(39,100,000)	(36,200,000)	(23,300,000)	(22,400,000)	(2,200,000)	(2,100,000)	(900,000)	(700,000)	(600,000)	(600,000)
Net Carrying Amount	256,444,000		266,188,000	57,400,000	58,700,000	100,300,000	105,300,000	70,900,000	73,300,000	21,700,000	22,500,000	2,100,000	2,200,000	4,000,000	4,200,000	0	0
Amortization [Abstract]
Amortization expense	$ 10,900,000	$ 11,100,000

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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.

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

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

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

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Remaining amortization period 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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