XML 23 R10.htm IDEA: XBRL DOCUMENT
v3.8.0.1

Earnings Per Share | 3 Months Ended
--- | ---
Mar. 31, 2018
Earnings Per Share [Abstract] |
Earnings Per Share | Earnings Per Share ("EPS") There are no adjustments required to be made to net income for purposes of computing EPS. The average number of common shares outstanding is reconciled to those used in the basic and diluted EPS computations as follows:
|  | Three Months Ended March 31
(Millions of shares) |  | 2018 |  | 2017
Basic |  | 350.4 |  |  | 356.0 |
Dilutive effect of stock options and restricted share unit awards |  | 2.2 |  |  | 2.6 |
Diluted |  | 352.6 |  |  | 358.6 |
The impact of options outstanding that were not included in the computation of diluted EPS because their exercise price was greater than the average market price of the common shares was insignificant. The number of common shares outstanding as of March 31, 2018 and 2017 was 349.6 million and 355.2 million, respectively.

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