Goodwill and Other Intangible Assets (Details1) (USD $) In Millions, unless otherwise specified	Dec. 31, 2011	Dec. 31, 2010
Intangible assets subject to amortization:
Gross carrying amount	$ 1,134.8	$ 1,063.8
Accumulated amortization	(528.6)	(434.0)
Intangible assets not subject to amortization:
Gross carrying amount	192.3	197.3
Total identifiable intangible assets	798.5	827.1
Core Technology [Member]
Intangible assets subject to amortization:
Gross carrying amount	144.1	144.1
Accumulated amortization	(59.9)	(52.0)
Intangible assets not subject to amortization:
Gross carrying amount	0	0
Total identifiable intangible assets	84.2	92.1
Developed Technology [Member]
Intangible assets subject to amortization:
Gross carrying amount	530.8	511.5
Accumulated amortization	(255.5)	(219.3)
Intangible assets not subject to amortization:
Gross carrying amount	0	0
Total identifiable intangible assets	275.3	292.2
Intellectual Property Rights [Member]
Intangible assets subject to amortization:
Gross carrying amount	172.5	153.7
Accumulated amortization	(100.2)	(73.4)
Intangible assets not subject to amortization:
Gross carrying amount	0	0
Total identifiable intangible assets	72.3	80.3
Trademarks and Trade Names [Member]
Intangible assets subject to amortization:
Gross carrying amount	40.4	36.8
Accumulated amortization	(26.9)	(23.4)
Intangible assets not subject to amortization:
Gross carrying amount	192.3	197.3
Total identifiable intangible assets	205.8	210.7
Customer Relationships [Member]
Intangible assets subject to amortization:
Gross carrying amount	164.3	147.7
Accumulated amortization	(46.7)	(32.8)
Intangible assets not subject to amortization:
Gross carrying amount	0	0
Total identifiable intangible assets	117.6	114.9
Other [Member]
Intangible assets subject to amortization:
Gross carrying amount	82.7	70.0
Accumulated amortization	(39.4)	(33.1)
Intangible assets not subject to amortization:
Gross carrying amount	0	0
Total identifiable intangible assets	$ 43.3	$ 36.9