COMMON STOCK REPURCHASES (Details) (USD $)	3 Months Ended
	Jun. 30, 2012	Jun. 30, 2011
Equity, Class of Treasury Stock [Line Items]
Stock Repurchase Program, Remaining Number of Shares Authorized to be Repurchased	104,613
Employees Taxes Withheld And Paid For Restricted Stock And Restricted Stock Units	$ 1,290,000	$ 705,000
Open Market Repurchases [Member]
Equity, Class of Treasury Stock [Line Items]
Treasury Stock, Shares, Acquired	529,000	270,000
Treasury Stock, Value, Acquired, Cost Method	16,500,000	9,500,000
Treasury Stock Acquired, Average Cost Per Share	$ 31.14	$ 35.34
Accelerated Share Repurchase [Member]
Equity, Class of Treasury Stock [Line Items]
Treasury Stock, Shares, Acquired		2,183,014
Treasury Stock, Value, Acquired, Cost Method		100,000,000
Accelerated Share Repurchase, Value Allocated to Treasury Stock		81,100,000
Accelerated Share Repurchase, Value Allocated To Equity Forward Contract		$ 18,900,000