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Earnings Per Share (Tables)
3 Months Ended
Mar. 31, 2017
Earnings Per Share [Abstract]  
Components of basic and diluted shares used in EPS [Table Text Block]
A reconciliation of the components of basic and diluted shares used in the EPS calculation follows:
 
Three Months Ended
 
March 31,
 
2017
 
2016
 
(in millions)
Weighted-average basic common shares outstanding
240.2

 
189.7

Potential number of shares issuable upon exercise of in-the-money stock options under the Long-Term Stock Incentive Plan
0.1

 

Average diluted common shares outstanding
240.3

 
189.7