Goodwill And Other Intangible Assets (Schedule Of Intangible Assets) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015	Dec. 31, 2015
Intangible Assets [Abstract]
Gross carrying amount	$ 1,050,994		$ 1,037,663
Accumulated amortization	769,198		754,245
Product Related Intangible Assets [Member]
Intangible Assets [Abstract]
Gross carrying amount	605,301		589,847
Accumulated amortization	484,842		476,141
Other [Member]
Intangible Assets [Abstract]
Gross carrying amount	445,693		447,816
Accumulated amortization	$ 284,356		$ 278,104
Minimum [Member]
Statement [Line Items]
Intangible asset life	3 years
Maximum [Member]
Statement [Line Items]
Intangible asset life	7 years
Maximum [Member] | Patents [Member]
Statement [Line Items]
Intangible asset life	10 years
Cost of net revenues [Member] | Product Related Intangible Assets [Member]
Intangible Assets [Abstract]
Amortization expense	$ 15,100	$ 18,400
Operating Expense [Member] | Other [Member]
Intangible Assets [Abstract]
Amortization expense	$ 7,400	$ 9,400