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Stock Compensation - Granted Awards Activity (Details) - 6 months ended Jun. 30, 2015 - $ / shares
shares in Millions
Total
Restricted Stock Units (RSUs) [Member]  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Other than options - Granted 0.6
Other than options - Weighted Average Per Share Grant Date Fair Value $ 22.25
Performance Share Units [Member]  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Other than options - Granted 0.3
Other than options - Weighted Average Per Share Grant Date Fair Value $ 24.70