XML 25 R11.htm IDEA: XBRL DOCUMENT
v3.8.0.1

Net Income Per Share | 12 Months Ended
--- | ---
Dec. 31, 2017
Earnings Per Share [Abstract] |
Net Income Per Share | Note 3: Net Income Per Share The following table reconciles the shares used in the calculation of basic net income per share to those used for diluted net income per share:
(in millions) | 2017 |  | 2016 |  | 2015
Net income | $ | 150.7 |  |  | $ | 143.6 |  |  | $ | 95.6 |
Weighted average common shares outstanding | 73.9 |  |  | 73.3 |  |  | 72.0 |
Dilutive effect of equity awards, based on the treasury stock method | 1.9 |  |  | 1.7 |  |  | 1.8 |
Weighted average shares assuming dilution | 75.8 |  |  | 75.0 |  |  | 73.8 |
During 2017, 2016 and 2015, there were 0.4 million, 0.1 million, and 0.7 million shares, respectively, from stock-based compensation plans not included in the computation of diluted net income per share because their impact was antidilutive. In December 2016, we announced a share repurchase program authorizing the repurchase of up to 800,000 shares of our common stock from time to time on the open market or in privately-negotiated transactions as permitted under the Securities Exchange Act of 1934 Rule 10b-18. During 2017, we purchased 800,000 shares of our common stock under this program at a cost of $74.4 million, or an average price of $92.96 per share. This share repurchase program expired on December 31, 2017. Please refer to Note 18, Subsequent Events, for discussion of our share repurchase program for calendar-year 2018.

X
- References No definition available. + Details
Name: | us-gaap_EarningsPerShareAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The entire disclosure for earnings per share. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -URI http://asc.fasb.org/topic&trid=2144383 + Details
Name: | us-gaap_EarningsPerShareTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration