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Earnings Per Share (Tables) | 3 Months Ended
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Mar. 31, 2017
Earnings Per Share [Abstract] |
Computation Of Diluted Average Common Shares | The computation of diluted average common shares is as follows:
| Three Months Ended
| March 31,
(in thousands) | 2017 |  | 2016
Denominator |  |  |
Basic average common shares outstanding | 323,681 |  |  | 320,281 |
Dilutive potential common shares: |  |  |
Shares contingently issuable under employee stock plans | 360 |  |  | 45 |
Shares restricted under employee stock plans | 1,265 |  |  | 2,134 |
Diluted Average Common Shares | 325,306 |  |  | 322,460 |

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- Definition Tabular disclosure of the weighted average number of shares used in calculating basic net earnings per share (or unit) and diluted earnings per share (or unit). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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