v2.4.0.6
Segment Information (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
Schedule of Segment Reporting Information By Segment [Abstract]          
Net Operating Revenues $ 2,954,855 $ 2,885,744 $ 8,670,825 $ 7,353,100  
Operating Income (Loss) 605,747 950,030 1,857,858 1,810,734  
Other Income, Net 7,596 1,377 22,902 11,205  
Interest Expense, Net 53,154 52,186 154,198 153,772  
Income Before Income Taxes 560,189 899,221 1,726,562 1,668,167  
Total Assets 28,032,491   28,032,491   24,838,797
United States [Member]
         
Schedule of Segment Reporting Information By Segment [Abstract]          
Net Operating Revenues 2,702,046 2,640,739 7,953,839 6,549,392  
Operating Income (Loss) 545,982 923,810 1,711,860 1,938,349  
Total Assets 24,313,164   24,313,164   21,313,158
Canada [Member]
         
Schedule of Segment Reporting Information By Segment [Abstract]          
Net Operating Revenues 79,500 103,842 264,059 360,380  
Operating Income (Loss) (40,477) (36,596) (93,113) (356,012)  
Total Assets 2,104,831   2,104,831   2,131,949
Trinidad [Member]
         
Schedule of Segment Reporting Information By Segment [Abstract]          
Net Operating Revenues 167,402 134,542 434,746 421,884  
Operating Income (Loss) 114,709 96,304 284,869 279,413  
Total Assets 1,126,274   1,126,274   1,085,664
Other International [Member]
         
Schedule of Segment Reporting Information By Segment [Abstract]          
Net Operating Revenues 5,907 6,621 18,181 21,444  
Operating Income (Loss) (14,467) (33,488) (45,758) (51,016)  
Total Assets $ 488,222   $ 488,222   $ 308,026