Earnings Per Share (Tables)

6 Months Ended

Jun. 30, 2015

Earnings Per Share [Abstract]

Computation of basic and diluted net earnings per share

The following tables set forth the computation of basic and diluted net income per common share (dollars and shares in millions, except per share amounts):

	Three Months Ended June 30,
	2015					2014
	Net Income		Weighted-Average Shares Outstanding	Net Income Per Common Share		Net Income		Weighted-Average Shares Outstanding	Net Income Per Common Share
Basic EPS	$	13.2	23.1	$	0.57	$	12.0	23.1	$	0.52
Effect of dilutive common share equivalents:
Restricted stock units			0.1	—				—	—
Stock options			—	—				0.1	—
Performance shares			0.1	—				—	—
Diluted EPS	$	13.2	23.3	$	0.57	$	12.0	23.2	$	0.52

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Note: Basic and diluted earnings per share are calculated based on unrounded actual amounts.

	Six Months Ended June 30,
	2015					2014
	Net Income		Weighted-Average Shares Outstanding	Net Income Per Common Share		Net Income		Weighted-Average Shares Outstanding	Net Income Per Common Share
Basic EPS	$	18.7	23.1	$	0.81	$	14.4	23.1	$	0.63
Effect of dilutive common share equivalents:
Restricted stock units			0.1	—				0.1	(0.01		)
Performance shares			0.1	—				—	—
Diluted EPS	$	18.7	23.3	$	0.81	$	14.4	23.2	$	0.62

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Note: Basic and diluted earnings per share are calculated based on unrounded actual amounts.