Earnings Per Share (Tables)

3 Months Ended

Mar. 31, 2016

Earnings Per Share [Abstract]

Comparison Of Basic And Diluted Earnings Per Share

The following table sets forth the comparison of basic and diluted earnings per share:

	Three Months Ended   March 31,
	2016		2015
Basic earnings per share:
Net income	$	74.1	$	124.4
Weighted average common shares outstanding	90,254,512		95,935,551
Basic earnings per share	$	0.82	$	1.30

	Three Months Ended   March 31,
	2016		2015
Diluted earnings per share:
Net income	$	74.1	$	124.4
Weighted average common shares outstanding	90,254,512		95,935,551
Share equivalents:
Stock options	832,747		1,116,871
RSUs and performance-based equity awards	451,268		509,971
Employee share purchase plan	20,698		14,636
Weighted average common shares and common share equivalents outstanding - diluted	91,559,225		97,577,029
Diluted earnings per share	$	0.81	$	1.27