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SHAREHOLDERS' EQUITY (TABLES) | 3 Months Ended
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Mar. 31, 2015
Stockholders' Equity Note [Abstract] |
COMMON SHARES ISSUED AND OUTSTANDING | The following table presents our common shares issued and outstanding:
|  | Three months ended March 31, |
|  | 2015 |  | 2014 |
| Shares issued, balance at beginning of period | 175,478 |  |  | 174,134 |  |
| Shares issued | 712 |  |  | 1,061 |  |
| Total shares issued at end of period | 176,190 |  |  | 175,195 |  |
| Treasury shares, balance at beginning of period | (76,052 | ) |  | (64,649 | ) |
| Shares repurchased | (290 | ) |  | (4,036 | ) |
| Shares reissued from treasury | 371 |  |  | 235 |  |
| Total treasury shares at end of period | (75,971 | ) |  | (68,450 | ) |
| Total shares outstanding | 100,219 |  |  | 106,745 |  |
SHARE REPURCHASES | The following table presents our share repurchases:
|  | Three months ended March 31, |
|  | 2015 |  | 2014 |
| In the open market: |  |  |  |
| Total shares | 16 |  |  | 3,710 |  |
| Total cost | $ | 832 |  |  | $ | 164,606 |  |
| Average price per share(1) | $ | 50.69 |  |  | $ | 44.37 |  |
| From employees: |  |  |  |
| Total shares | 274 |  |  | 326 |  |
| Total cost | $ | 13,939 |  |  | $ | 14,097 |  |
| Average price per share(1) | $ | 50.97 |  |  | $ | 43.14 |  |
| Total shares repurchased: |  |  |  |
| Total shares | 290 |  |  | 4,036 |  |
| Total cost | $ | 14,771 |  |  | $ | 178,703 |  |
| Average price per share(1) | $ | 50.95 |  |  | $ | 44.27 |  |
(1) | Calculated using whole figures.

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- Definition Tabular disclosure of treasury stock, including, but not limited to, average cost per share, description of share repurchase program, shares repurchased, shares held for each class of treasury stock. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 30 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6405834&loc=d3e23285-112656 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 30 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=6405834&loc=d3e23315-112656 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 30 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6405813&loc=d3e23239-112655 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 30 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6405834&loc=d3e23309-112656 + Details
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