Interest (Schedule Of Capitalized Interest Costs) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Interest [Abstract]
Interest capitalized beginning of period	$ 70,311	$ 63,068	$ 67,069	$ 53,842
Interest capitalized during period	15,065	19,325	50,686	55,792
Less: capitalized interest in cost of sales	(19,050)	(14,258)	(51,429)	(41,499)
Interest capitalized end of period	$ 66,326	$ 68,135	$ 66,326	$ 68,135