SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details)	12 Months Ended
	Dec. 31, 2011 years	Dec. 31, 2010	Dec. 31, 2009
Amortization Period for Cost Capitalized on Asset Retirement Obligations (in years)	10
Sales Revenue, Goods, Net, Percentage	99.00%	99.00%	98.00%
Sales Revenue, Non Goods, Net, Percentage	1.00%	1.00%	2.00%