NOTES PAYABLE, LONG-TERM DEBT AND AVAILABLE CREDIT FACILITIES (Narrative) (Details)	6 Months Ended			3 Months Ended	1 Months Ended			6 Months Ended	1 Months Ended	6 Months Ended
	Jun. 30, 2012 USD ($)	Jun. 30, 2011 USD ($)	Jun. 30, 2012 Revolving Credit Facility Agreement [Member] USD ($)	Jun. 30, 2012 Pollution control industrial revenue bonds tax-exempt [Member] USD ($)	May 31, 2011 Long-term Debt [Member] USD ($)	May 31, 2011 Long-term Debt [Member] EUR (€)	Feb. 28, 2011 Long-term Debt [Member] USD ($)	Jun. 30, 2012 Long-term Debt [Member] USD ($)	Jan. 31, 2012 Pollution control industrial revenue bonds [Member] USD ($)	Jun. 30, 2012 Long Term Debt entered into by Variable Interest Entities [Member] USD ($)	Jun. 30, 2011 InterNotes issued [Member] USD ($)
Notes Payable Long Term Debt and Available Credit Facilities [Line Items]
Proceeds from issuance of long-term debt	$ 446,000,000	$ 946,000,000						$ 210,000,000		$ 224,000,000	$ 175,000,000
Repayments of Notes Payable				105,000,000	707,000,000	500,000,000	800,000,000		37,000,000
Outstanding debt	20,200,000,000
Debt instrument covenant, ratio of indebtedness to net capital, maximum	0.65
Amount of debt, if exceeded, causes company to comply with capitalization ratios			500,000,000
Amount at which a failure to pay results in default	50,000,000
Permitted amount of acceleration of principal which causes default	200,000,000
Amount of judgment which causes default	$ 200,000,000