XML 29 R15.htm IDEA: XBRL DOCUMENT
v3.8.0.1

Earnings Per Share | 12 Months Ended
--- | ---
Dec. 31, 2017
Earnings Per Share [Abstract] |
Earnings Per Share | EARNINGS PER SHARE DATA The following table provides a reconciliation of the data used in the calculation of basic and diluted common shares outstanding for the three years ended December 31, 2017, 2016 and 2015.
| 2017 |  |  | 2016 |  |  | 2015 |
Basic weighted average common shares outstanding | 88.3 |  |  | 89.2 |  |  | 89.8 |
Add: Dilutive impact of outstanding equity awards | 0.7 |  |  | 0.7 |  |  | 0.9 |
Diluted weighted average common shares outstanding | 89.0 |  |  | 89.9 |  |  | 90.7 |
The following table provides the number of shares underlying stock options excluded from the computation of diluted earnings per share for the three years ended December 31, 2017, 2016 and 2015 because they were anti-dilutive.
| 2017 |  |  | 2016 |  |  | 2015 |
Anti-dilutive stock options | 0.3 |  |  | 0.7 |  |  | 0.4 |
Average exercise price | $ | 42.43 |  |  | $ | 38.34 |  |  | $ | 42.50 |
Year(s) of expiration | 2024 - 2025 |  |  | 2024 - 2026 |  |  | 2024 - 2025 |
In addition, 0.1 of outstanding employee PSU awards (see Note 16, Long-Term Incentive Employee Compensation, for additional information on PSU awards) were excluded from the computation of diluted earnings per share for the years ended December 31, 2017, 2016 and 2015, respectively, as the necessary performance conditions had not yet been satisfied.

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