DEBT (Credit Facilities) (Details) (USD $) In Millions, unless otherwise specified	9 Months Ended
	Sep. 30, 2012 Quarters	Sep. 30, 2012 Revolving Credit Facility [Member]	Sep. 30, 2012 Senior Unsecured Debt [Member] Revolving Credit Facility [Member]	Dec. 21, 2011 Senior Unsecured Debt [Member] Revolving Credit Facility [Member]	Sep. 30, 2012 Revolving Credit Facility [Member]	Dec. 31, 2011 Revolving Credit Facility [Member]	Sep. 30, 2012 Debt Covenant, Requirement [Member]	Sep. 30, 2012 Debt Covenant, Actual [Member]
Line of Credit Facility [Line Items]
Term for Revolving Credit Facility			5 years
Revolving Credit Facility, maximum borrowing capacity				$ 1,000.0
Revolving Credit Facility, outstanding balance					$ 0	$ 560.0
Revolving Credit Facility, covenant terms		The Credit Agreement also contains limitations on aggregate subsidiary indebtedness and a debt covenant that requires that the Company maintain on the last day of any period of four consecutive fiscal quarters, in each case taken as one accounting period, a ratio of total debt to consolidated EBITDA (Earnings Before Interest, Taxes, Depreciation, and Amortization) of not more than 3.0 to 1.0.
Revolving Credit Facility, covenant compliance		The Company was in compliance with all covenants in the Credit Agreement at September 30, 2012. As of September 30, 2012, the ratio of total debt to consolidated EBITDA was 2.0 to 1.0.
Debt covenant, requirement for number of consecutive fiscal quarters	4
Debt to EBITDA (leverage) ratio							3	2
Revolving Credit Facility, interest rate at period end		1.19%