Income Per Share (Tables)

9 Months Ended

Sep. 30, 2017

Earnings Per Share [Abstract]

Schedule of Earnings Per Share, Basic and Diluted

The following table shows how we reconcile our net income and the number of shares used in computing basic and diluted net income per share:

	Three months ended September 30				Nine months ended September 30
(in millions, except per share amounts)	2017		2016		2017		2016
Basic net income per share:
Consolidated net income	$	33.9	$	30.2	$	98.0	$	90.7
Weighted average common shares outstanding	42.5		43.1		42.8		43.0
Basic net income per share	$	0.80	$	0.70	$	2.29	$	2.11
Diluted net income per share:
Consolidated net income	$	33.9	$	30.2	$	98.0	$	90.7
Weighted average common shares outstanding	42.5		43.1		42.8		43.0
Net effect of dilutive stock options, restricted stock units, and performance share awards	0.3		0.2		0.3		0.3
Weighted average common shares outstanding for computing diluted income per share	42.8		43.3		43.1		43.3
Diluted net income per share	$	0.79	$	0.70	$	2.28	$	2.09