Segment Information (Schedule Of Revenues By Geographic Segment) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2011	Sep. 30, 2011	Jun. 30, 2011	Mar. 31, 2011	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Segment Information [Abstract]
United States, Revenue									$ 3,769,528	$ 1,438,138	$ 1,134,938
Other Countries, Revenue									798,540	526,194	428,105
Total, Revenues	1,178,247	1,179,665	1,243,319	966,837	562,400	537,042	479,893	384,997	4,568,068	1,964,332	1,563,043
United States, Long-lived assets	2,684,932				1,060,483				2,684,932	1,060,483
Other Countries, Long-lived assets	570,288				446,885				570,288	446,885
Property, plant and equipment, net	$ 3,255,220				$ 1,507,368				$ 3,255,220	$ 1,507,368