Interest Costs (Tables)

v2.4.0.6

Interest Costs (Tables)	12 Months Ended
	Dec. 31, 2011
Interest Costs Disclosure [Abstract]
Interest Costs	For the Years Ended December 31,       2011     2010     2009   Interest costs charged to expense   $ 304,938     $ 295,643     $ 315,668   Interest costs capitalized     33,522       63,880       61,201                             Total interest costs incurred   $ 338,460     $ 359,523     $ 376,869