Interest (Schedule Of Capitalized Interest Costs) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Interest [Abstract]
Interest capitalized beginning of period	$ 59,121	$ 46,160	$ 53,842	$ 41,762
Interest capitalized during period	18,602	13,920	36,467	27,277
Less: capitalized interest in cost of sales	(14,655)	(12,284)	(27,241)	(21,243)
Interest capitalized end of period	$ 63,068	$ 47,796	$ 63,068	$ 47,796