Interest (Schedule Of Capitalized Interest Costs) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Interest [Abstract]
Interest capitalized beginning of period	$ 63,068	$ 47,797	$ 53,842	$ 41,762
Interest capitalized during period	19,325	16,109	55,792	43,387
Less: capitalized interest in cost of sales	(14,258)	(12,334)	(41,499)	(33,577)
Interest capitalized end of period	$ 68,135	$ 51,572	$ 68,135	$ 51,572