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SUBSEQUENT EVENTS Share Repurchase Authorization (Details) (Subsequent Event [Member], June 2012 Share Repurchase Program [Member], USD $) In Millions, unless otherwise specified | 1 Months Ended
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Jun. 30, 2012
Subsequent Event [Member] | June 2012 Share Repurchase Program [Member] |
Subsequent Event [Line Items] |
Stock Repurchase Program, Authorized Amount | $ 250.0
Stock Repurchase Program, Period in Force | 24 months

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- Definition The amount authorized by an entity's Board of Directors under a stock repurchase plan. + References No definition available. + Details
Name: | us-gaap_StockRepurchaseProgramAuthorizedAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Definition Period which shares may be purchased under a stock repurchase plan authorized by an entity's Board of Directors, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
Name: | us-gaap_StockRepurchaseProgramPeriodInForce1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

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- Details
Name: | us-gaap_SubsequentEventLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration