Segment Information (Company's information by geographic area) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011	Dec. 31, 2011
Segment Information [Abstract]
United States, Revenue	$ 976,984	$ 397,718	$ 2,826,544	$ 1,035,759
Other Countries, Revenue	202,681	139,324	563,277	366,173
Total, Revenues	1,179,665	537,042	3,389,821	1,401,932
United States, Long-lived assets	2,623,401		2,623,401		1,060,483
Other Countries, Long-lived assets	539,872		539,872		446,885
Total, Long-lived assets	$ 3,163,273		$ 3,163,273		$ 1,507,368