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CAPITAL STOCK (Details) (USD $) In Thousands, except Share data, unless otherwise specified | 12 Months Ended
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Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2010
CAPITAL STOCK |  |  |
Authorized common stock (in shares) | 199,000,000 | 199,000,000 |
Common stock and treasury stock and the share activity |  |  |
Balance at the beginning of the year (in shares) | 82,800,000 |  |
Common stock repurchases (in shares) | 1,600,000 | 2,100,000 |
Balance at the end of the year (in shares) | 84,100,000 | 82,800,000 |
Cash dividends paid on the common stock (in dollars) | $ 58,442 | $ 53,308 | $ 44,485
Common Stock Par Value |  |  |
Common stock and treasury stock and the share activity |  |  |
Balance at the beginning of the year (in shares) | 82,773,322 | 81,796,938 |
Restricted stock vestings (in shares) | 9,023 | 8,709 |
Balance at the end of the year (in shares) | 84,086,341 | 82,773,322 |
Common Stock Par Value | Stock Awards Plans |  |  |
Common stock and treasury stock and the share activity |  |  |
Stock option exercises (in shares) | 1,234,163 | 933,175 |
Common Stock Par Value | Director Stock Option Plans |  |  |
Common stock and treasury stock and the share activity |  |  |
Stock option exercises (in shares) | 69,833 | 34,500 |
Treasury Stock |  |  |
Common stock and treasury stock and the share activity |  |  |
Balance at the beginning of the year (in shares) | 16,921,022 | 15,047,020 |
Common stock repurchases (in shares) | 1,616,433 | 2,070,819 |
Balance at the end of the year (in shares) | 18,158,002 | 16,921,022 |
Treasury Stock | Stock Awards Plans |  |  |
Common stock and treasury stock and the share activity |  |  |
Stock option exercises (in shares) | (379,453) | (196,817) |

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- Definition Total number of common shares of an entity that have been sold or granted to shareholders (includes common shares that were issued, repurchased and remain in the treasury). These shares represent capital invested by the firm's shareholders and owners, and may be all or only a portion of the number of shares authorized. Shares issued include shares outstanding and shares held in the treasury. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.29) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 30 -Article 5 + Details
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