Sum of the gross carrying amounts before accumulated amortization as of the balance sheet date of all intangible assets having statutory or estimated useful lives. The aggregate gross carrying amount (including any previously recognized impairment charges) of a major finite-lived intangible asset class. A major class is composed of intangible assets that can be grouped together because they are similar, either by their nature or by their use in the operations of a company.

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 142

-Paragraph 45

-Subparagraph a(1)

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 30

-Section 50

-Paragraph 2

-Subparagraph (a)(1)

-URI http://asc.fasb.org/extlink&oid=6905858&loc=d3e16323-109275

Name:	us-gaap_FiniteLivedIntangibleAssetsGross
Namespace Prefix:	us-gaap
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

Intangible Assets Gross Carrying Amount and Accumulated Amortization (Details) (USD $) In Thousands	Sep. 30, 2011	Dec. 31, 2010	Sep. 30, 2010	Dec. 31, 2009
Finite-Lived Intangible Assets [Line Items]
Gross Assets	$ 773,262	$ 759,152	$ 772,526	$ 806,256
Accumulated Amortization	(509,039)	(467,482)
Net	264,223	291,670
Core Developed Technology [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Assets	394,990	378,705
Accumulated Amortization	(303,634)	(274,198)
Net	91,356	104,507
Customer Contracts And Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Assets	292,479	282,997
Accumulated Amortization	(131,370)	(110,539)
Net	161,109	172,458
Trade Marks And Trade Names [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Assets	74,701	73,194
Accumulated Amortization	(63,361)	(59,235)
Net	11,340	13,959
Other Intangible Assets [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Assets	11,092	24,256
Accumulated Amortization	(10,674)	(23,510)
Net	$ 418	$ 746