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STOCK-BASED COMPENSATION (Summary of Performance Share Plan Activity) (Details) (USD $)
In Millions, except Per Share data, unless otherwise specified
3 Months Ended
Mar. 31, 2015
Nonvested Shares  
Granted, nonvested shares / units 1.9us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod
Weighted Average Grant Date Fair Value  
Granted, Nonvested, Weighted Average Grant Date Fair Value $ 53.25us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue