Segment Information (Details 1) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2012 Segment	Mar. 31, 2011	Dec. 31, 2011
Company's information by geographic area
United States, Revenue	$ 795,771	$ 288,957
Other Countries, Revenue	171,066	96,040
Total, Revenues	966,837	384,997
United States, Long-lived assets	2,318,773		1,060,483
Other Countries, Long-lived assets	447,537		446,885
Total, Long-lived assets	$ 2,766,310		$ 1,507,368
Segment Reporting (Textual) [Abstract]
Number of reportable segment	3