Goodwill and Other Intangible Assets - Other Intangible Assets (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
Intangible Assets, excluding Goodwill [Line Items]
Finite-lived intangible assets, accumulated amortization	(165,430)	(145,710)
Total finite and indefinite-lived other intangible assets, gross carrying amount	371,590	301,380
Customer Relationships [Member]
Intangible Assets, excluding Goodwill [Line Items]
Finite-lived intangible assets, gross carrying amount	240,350	192,010
Finite-lived intangible assets, accumulated amortization	(116,040)	(101,140)
Technology and Other [Member]
Intangible Assets, excluding Goodwill [Line Items]
Finite-lived intangible assets, gross carrying amount	80,930	73,000
Finite-lived intangible assets, accumulated amortization	(49,390)	(44,570)
Trademarks and Trade Names [Member]
Intangible Assets, excluding Goodwill [Line Items]
Indefinite-lived intangible assets, gross carrying amount	50,310	36,370
Useful Life Five to Twelve Years [Member] | Customer Relationships [Member]
Intangible Assets, excluding Goodwill [Line Items]
Finite-lived intangible assets, gross carrying amount	85,740	37,400
Finite-lived intangible assets, accumulated amortization	(30,080)	(23,410)
Useful Life Fifteen to Twentyfive Years [Member] | Customer Relationships [Member]
Intangible Assets, excluding Goodwill [Line Items]
Finite-lived intangible assets, gross carrying amount	154,610	154,610
Finite-lived intangible assets, accumulated amortization	(85,960)	(77,730)
Useful Life One to Fifteen Years [Member] | Technology and Other [Member]
Intangible Assets, excluding Goodwill [Line Items]
Finite-lived intangible assets, gross carrying amount	37,130	29,360
Finite-lived intangible assets, accumulated amortization	(26,320)	(23,710)
Useful Life Seventeen to Thirty Years [Member] | Technology and Other [Member]
Intangible Assets, excluding Goodwill [Line Items]
Finite-lived intangible assets, gross carrying amount	43,800	43,640
Finite-lived intangible assets, accumulated amortization	(23,070)	(20,860)
Minimum [Member]
Intangible Assets, excluding Goodwill [Line Items]
Estimated Fair Value of Indefinite-lived Intangible Assets Exceeding Carrying Value, Percentage		35.00%
Finite-Lived Intangible Assets, Useful Life	1 year
Minimum [Member] | Customer Relationships [Member]
Intangible Assets, excluding Goodwill [Line Items]
Finite-Lived Intangible Assets, Useful Life	5 years
Minimum [Member] | Technology and Other [Member]
Intangible Assets, excluding Goodwill [Line Items]
Finite-Lived Intangible Assets, Useful Life	1 year
Minimum [Member] | Useful Life Five to Twelve Years [Member] | Customer Relationships [Member]
Intangible Assets, excluding Goodwill [Line Items]
Finite-Lived Intangible Assets, Useful Life	5 years
Minimum [Member] | Useful Life Fifteen to Twentyfive Years [Member] | Customer Relationships [Member]
Intangible Assets, excluding Goodwill [Line Items]
Finite-Lived Intangible Assets, Useful Life	15 years
Minimum [Member] | Useful Life One to Fifteen Years [Member] | Technology and Other [Member]
Intangible Assets, excluding Goodwill [Line Items]
Finite-Lived Intangible Assets, Useful Life	1 year
Minimum [Member] | Useful Life Seventeen to Thirty Years [Member] | Technology and Other [Member]
Intangible Assets, excluding Goodwill [Line Items]
Finite-Lived Intangible Assets, Useful Life	17 years
Maximum [Member]
Intangible Assets, excluding Goodwill [Line Items]
Finite-Lived Intangible Assets, Useful Life	30 years
Maximum [Member] | Customer Relationships [Member]
Intangible Assets, excluding Goodwill [Line Items]
Finite-Lived Intangible Assets, Useful Life	25 years
Maximum [Member] | Technology and Other [Member]
Intangible Assets, excluding Goodwill [Line Items]
Finite-Lived Intangible Assets, Useful Life	30 years
Maximum [Member] | Useful Life Five to Twelve Years [Member] | Customer Relationships [Member]
Intangible Assets, excluding Goodwill [Line Items]
Finite-Lived Intangible Assets, Useful Life	12 years
Maximum [Member] | Useful Life Fifteen to Twentyfive Years [Member] | Customer Relationships [Member]
Intangible Assets, excluding Goodwill [Line Items]
Finite-Lived Intangible Assets, Useful Life	25 years
Maximum [Member] | Useful Life One to Fifteen Years [Member] | Technology and Other [Member]
Intangible Assets, excluding Goodwill [Line Items]
Finite-Lived Intangible Assets, Useful Life	15 years
Maximum [Member] | Useful Life Seventeen to Thirty Years [Member] | Technology and Other [Member]
Intangible Assets, excluding Goodwill [Line Items]
Finite-Lived Intangible Assets, Useful Life	30 years