CONSOLIDATING FINANCIAL STATEMENTS Narrative (Details) (USD $)	3 Months Ended
	Mar. 31, 2014
Senior Exchangeable Notes due 2015 at a fixed interest rate of 4.50% [Member]
Debt Instrument [Line Items]
Issuance Date	August 2009
Face Amount	$ 172,500,000
Stated interest rate	4.50%
Maturity date	2015
Senior Notes due 2022 at a fixed interest rate of 3.75% [Member]
Debt Instrument [Line Items]
Issuance Date	March 2012
Face Amount	$ 325,000,000
Stated interest rate	3.75%
Maturity date	2022