Derivative Financial Instruments (Schedule Of Net Notional Foreign Currency Forward Contracts Outstanding) (Details) - Dec. 31, 2018 € in Thousands, ₩ in Thousands, ₨ in Thousands, ¥ in Thousands, ¥ in Thousands, £ in Thousands, kr in Thousands, SFr in Thousands, R$ in Thousands, $ in Thousands, $ in Thousands, $ in Thousands, $ in Thousands, $ in Thousands	KRW (₩)	GBP (£)	CHF (SFr)	AUD ($)	HKD ($)	NZD ($)	INR (₨)	CAD ($)	DKK (kr)	JPY (¥)	CNY (¥)	BRL (R$)	EUR (€)	SGD ($)
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Net notional foreign currency forward contracts outstanding	₩ 150,000	£ 14,100	SFr 19,450	$ 18,200	$ 20,600	$ 100	₨ 62,000	$ 2,350	kr 6,329	¥ 2,300,000	¥ 41,800	R$ 5,500	€ 9,736	$ 13,500