Other Intangible Assets (Other Intangible Assets) (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2011		Dec. 31, 2010
Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	$ 1,143.6		$ 769.2
Accumulated amortization	(292.3)		(228.9)
Core Technologies [Member]
Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	660.2		515.8
Accumulated amortization	(161.5)		(118.3)
Customer Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	144.6		43.8
Accumulated amortization	(25.7)		(19.7)
Other Intangible Assets [Member]
Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	202.6		187.7
Accumulated amortization	(105.1)		(90.9)
In-Process Research And Development [Member]
Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	$ 136.2	[1]	$ 21.9	[1]

[1] Amounts capitalized as in-process research and development are accounted for as indefinite-lived intangible assets.