SUBSEQUENT EVENTS Narrative (Details) (USD $)	3 Months Ended			1 Months Ended				1 Months Ended
	Jul. 29, 2012	Jul. 31, 2011	Aug. 31, 2012 Subsequent Event [Member] Tender Offer to Repurchase Debt [Member]	Aug. 31, 2012 Senior Unsecured Notes, Six Point Six Two Five Percent, Due August 2022 [Member] Subsequent Event [Member] Issuance of Debt [Member]	Aug. 31, 2012 Senior Unsecured Notes, Seven Point Seven Five Percent, Due May 2013 [Member] Subsequent Event [Member] Tender Offer to Repurchase Debt [Member]	Aug. 31, 2012 Senior Secured Notes, Ten Percent, Due July 2014 [Member] Subsequent Event [Member] Tender Offer to Repurchase Debt [Member]	Aug. 31, 2012 Senior Secured Notes, Ten Percent, Due July 2014 [Member] Subsequent Event [Member] Repayment of Debt [Member]	Aug. 31, 2012 Scenario, Forecast [Member] Subsequent Event [Member]
Subsequent Event [Line Items]
Debt Instrument, Face Amount				$ 1,000,000,000
Proceeds from Issuance of Long-term Debt, Net of Debt Issuance Costs				981,200,000
Debt Instrument, Repurchase Amount			649,400,000				155,500,000
Debt Instrument, Repurchased Face Amount					105,000,000	456,600,000	132,800,000
Gains (Losses) on Extinguishment of Debt	$ 0	$ 1,200,000						$ 121,000,000