Earnings per Share (Notes)

3 Months Ended

Mar. 31, 2014

Earnings Per Share [Abstract]

Earnings Per Share [Text Block]

Earnings per Share

The numerator for both basic and diluted earnings per share is net income. The denominator for basic earnings per share is the weighted average number of common shares outstanding during the period. The dilutive effect of outstanding restricted stock, restricted stock units, stock options and MPK Plan units is reflected in the denominator for diluted earnings per share using the treasury stock method.

The following is a reconciliation of basic shares to diluted shares:

	Three Months Ended March 31,
(in millions)	2014	2013
Weighted-average shares - basic	169.6	145.2
Effect of dilutive securities	2.7	0.9
Weighted-average shares - diluted	172.3	146.1

There were 0.1 million potential common shares excluded from diluted earnings per share for the three-month period ended March 31, 2014, as their inclusion would have had an anti-dilutive effect. There were no potential common shares excluded from diluted earnings per share for the three-month period ended March 31, 2013.