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Earnings Per Share Level 1 (Notes) | 12 Months Ended
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Dec. 31, 2016
Earnings Per Share [Abstract] |
Earnings Per Share [Text Block] | Earnings Per Share Basic earnings per common share (EPS) excludes dilution and is computed by dividing Net income attributable to common stockholders by the weighted average number of common shares outstanding for the period. Diluted EPS reflects the potential dilution that could occur if securities or other obligations to issue common stock were exercised or converted into common stock or resulted in the issuance of common stock that shared in our earnings. A reconciliation of the numerators and denominators of basic and diluted EPS for the three years ended December 31 is presented below:
| 2016 |  | 2015 |  | 2014
| (In thousands, except per share amounts)
Amounts attributable to common stockholders: |  |  |  |  |  |  |  |
Income from continuing operations — basic | $ | 177,038 |  |  | $ | 234,162 |  |  | $ | 170,283 |
After tax interest on convertible debt | 43 |  |  | 50 |  |  | 51 |
Income from continuing operations — diluted | $ | 177,081 |  |  | $ | 234,212 |  |  | $ | 170,334 |
(Loss) income from discontinued operations, net of tax | $ | — |  |  | $ | (390 | ) |  | $ | 2,186 |
Net income — basic | $ | 177,038 |  |  | $ | 233,772 |  |  | $ | 172,469 |
After tax interest on convertible debt | 43 |  |  | 50 |  |  | 51 |
Net income — diluted | $ | 177,081 |  |  | $ | 233,822 |  |  | $ | 172,520 |
Weighted average shares: |  |  |  |  |  |  |  |
Weighted average shares — basic | 193,086 |  |  | 200,356 |  |  | 210,741 |
Stock options | 2,823 |  |  | 3,973 |  |  | 3,338 |
Restricted share units | 12 |  |  | — |  |  | — |
Convertible debt | 121 |  |  | 121 |  |  | 121 |
Weighted average shares — diluted | 196,042 |  |  | 204,450 |  |  | 214,200 |
Amounts attributable to common stockholders: |  |  |  |  |
Income from continuing operations per share: |  |  |  |  |
Basic | $ | 0.92 |  |  | $ | 1.17 |  |  | $ | 0.81 |
Diluted | $ | 0.90 |  |  | $ | 1.14 |  |  | $ | 0.80 |
Income from discontinued operations per share: |  |  |  |  |
Basic | $ | — |  |  | $ | — |  |  | $ | 0.01 |
Diluted | $ | — |  |  | $ | — |  |  | $ | 0.01 |
Net income per share: |  |  |  |  |  |  |  |
Basic | $ | 0.92 |  |  | $ | 1.17 |  |  | $ | 0.82 |
Diluted | $ | 0.90 |  |  | $ | 1.14 |  |  | $ | 0.81 |
The computation of diluted earnings per share excludes outstanding stock options in certain periods in which the inclusion of such options would be antidilutive to the periods presented. Total options not currently included in the computation of dilutive EPS

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- 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 -SubTopic 10 -Section 45 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=64863997&loc=d3e1278-109256 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=64863997&loc=d3e1252-109256 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 55 -Paragraph 52 -URI http://asc.fasb.org/extlink&oid=65016374&loc=d3e4984-109258 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.21) -URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688 + Details
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