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CONSOLIDATED STATEMENTS OF EQUITY/ AND REDEEMABLE NONCONTROLLING INTEREST Consolidated Statements of Equity/ and Redeemable Noncontrolling Interest (parenthetical) (USD $)
In Millions, unless otherwise specified
 12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Consolidated Statements Of Equity deficit And Redeemable Noncontrolling Interest Parenthetical [Abstract]      
Adjustments to Additional Paid in Capital, Income Tax Benefit from Share-based Compensation $ 9.0us-gaap_AdjustmentsToAdditionalPaidInCapitalTaxEffectFromShareBasedCompensation $ 9.5us-gaap_AdjustmentsToAdditionalPaidInCapitalTaxEffectFromShareBasedCompensation $ 11.8us-gaap_AdjustmentsToAdditionalPaidInCapitalTaxEffectFromShareBasedCompensation