Goodwill And Other Intangible Assets (Schedule Of Intangible Assets) (Details) (USD $)	3 Months Ended					3 Months Ended			3 Months Ended			3 Months Ended
	Mar. 31, 2013		Mar. 31, 2012		Dec. 31, 2012	Mar. 31, 2013 Product Related Intangible Assets [Member]	Sep. 30, 2011 Product Related Intangible Assets [Member]	Dec. 31, 2012 Product Related Intangible Assets [Member]	Mar. 31, 2013 Other Intangible Assets [Member]	Sep. 30, 2011 Other Intangible Assets [Member]	Dec. 31, 2012 Other Intangible Assets [Member]	Mar. 31, 2013 Cloud.Com [Member] Trade Names [Member]	Mar. 31, 2013 Minimum [Member]	Mar. 31, 2013 Maximum [Member]	Mar. 31, 2013 Maximum [Member] Patents [Member]
Gross carrying amount	$ 1,135,547,000				$ 1,066,633,000	$ 666,880,000		$ 620,032,000	$ 468,667,000		$ 446,601,000
Accumulated amortization	544,858,000				510,428,000	361,788,000		339,608,000	183,070,000		170,820,000
Intangible asset life													3 years	7 years	10 years
Amortization expense	35,127,000	[1]	27,002,000	[1]		24,700,000	16,500,000		10,400,000	10,500,000
Impairment of Intangible Assets (Excluding Goodwill)												5,200,000
Finite-lived intangible assets, net												$ 0

[1] Represents expenses presented to management on a consolidated basis only and not allocated to the operating segments.