Goodwill And Other Intangible Assets (Schedule Of Intangible Assets) (Details) (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011	Dec. 31, 2011
Gross carrying amount	$ 800,629,000		$ 800,629,000		$ 747,398,000
Accumulated amortization	446,777,000		446,777,000		404,026,000
Estimated useful lives of intangible assets, minimum			3
Estimated useful lives of intangible assets, maximum			7
Product Related Intangible Assets [Member]
Gross carrying amount	513,669,000		513,669,000		472,582,000
Accumulated amortization	297,867,000		297,867,000		268,332,000
Amortization expense	17,100,000	12,500,000	33,600,000	25,200,000
Other Intangible Assets [Member]
Gross carrying amount	286,960,000		286,960,000		274,816,000
Accumulated amortization	148,910,000		148,910,000		135,694,000
Amortization expense	5,200,000	3,900,000	15,700,000	7,400,000
Patents [Member]
Estimated useful lives of intangible assets, maximum			10
Cloud.Com [Member] | Trade Names [Member]
Impairment of Intangible Assets (Excluding Goodwill)			5,200,000
Finite-lived intangible assets, net	$ 0		$ 0