Goodwill And Other Intangible Assets (Schedule Of Intangible Assets) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016	Dec. 31, 2016
Statement [Line Items]
Amortization of product related intangible assets	$ 12,410	$ 14,390	$ 25,498	$ 28,447
Intangible Assets [Abstract]
Gross carrying amount	917,992		917,992		$ 871,286
Accumulated amortization	730,442		730,442		697,605
Intangible assets, fair value	187,550		187,550
Product Related Intangible Assets [Member]
Intangible Assets [Abstract]
Gross carrying amount	690,060		690,060		647,594
Accumulated amortization	546,244		546,244		520,746
Other [Member]
Intangible Assets [Abstract]
Gross carrying amount	227,932		227,932		223,692
Accumulated amortization	184,198		$ 184,198		$ 176,859
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	12,400	14,400	$ 25,500	28,400
Operating Expense [Member] | Other [Member]
Intangible Assets [Abstract]
Amortization expense	$ 3,700	$ 3,800	$ 7,300	$ 7,500