Goodwill And Intangible Assets (Narrative) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended	9 Months Ended
Sep. 30, 2011 customers years projects	Oct. 01, 2010	Sep. 30, 2011 years employees customers companies projects	Oct. 01, 2010	Dec. 31, 2010
Finite Lived Intangible Assets Useful Life Minimum Of Less Than One Year			1.0
Finite-Lived Intangible Assets, Useful Life, Maximum			18
Amortization expense	$ 10.6	$ 8.5	$ 32.8	$ 25.6
Cost of goods sold, amortization	0	0.6	1.1	1.8
Number Of Projects Being Amortized	10		10
Project Worth Upon Completion	509.6		509.6		431.6
Developed Technology Originally Classified As In Process Research And Development [Member]
Project Worth Upon Completion	22.2		22.2
Useful Life, Minimum (in years)			10.3
In-Process Research and Development [Member]
Project Worth Upon Completion	12.5		12.5		18.3
In-process research and development	$ 10.0		$ 10.0

Business acquisition purchase price allocation in process research and development

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Finite Lived Intangible Assets Useful Life Minimum Of Less Than One Year

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Number Of Projects Being Amortized

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The amount of expense recognized in the current period that reflects the allocation of the costs of intangible assets over the expected benefit period of such assets. This element applies only to intangible assets used in the production of goods.

+ References

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-Name Statement of Financial Accounting Standard (FAS)

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Aggregate amount of intangible asset amortization recognized as expense during the period.

+ References

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The average useful life 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.

+ References

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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.

+ References

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The maximum useful life 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.

+ References

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