Financial Instruments (Schedule Of Gain (Loss) Recognized In AOCI And The Amount Of (Loss) Gain Reclassified Into Earnings) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Cash Flow Hedging [Member] | Interest Expense [Member]
Amount of (Loss) Gain Reclassified from AOCL into Income	$ 5,403	$ 2,650
Cash Flow Hedging [Member] | Foreign Currency Gains (Losses), Net [Member]
Amount of (Loss) Gain Reclassified from AOCL into Income	4,759	14,509
Interest Rate Swap [Member] | Cash Flow Hedging [Member] | Interest Expense [Member]
Amount of Gain (Loss) Recognized in AOCL	(11,050)	(4,513)
Amount of (Loss) Gain Reclassified from AOCL into Income	(441)	(966)
Cross Currency Swaps [Member] | Interest Expense [Member]
Amount of Gain (Loss) Recognized in AOCL	6,330	7,243
Cross Currency Swaps [Member] | Cash Flow Hedging [Member] | Interest Expense [Member]
Amount of Gain (Loss) Recognized in AOCL	8,319	15,901
Amount of (Loss) Gain Reclassified from AOCL into Income	5,844	3,616
Cross Currency Swaps [Member] | Cash Flow Hedging [Member] | Foreign Currency Gains (Losses), Net [Member]
Amount of (Loss) Gain Reclassified from AOCL into Income	$ 4,759	$ 14,509