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SHAREHOLDERS' EQUITY (DETAILS 3) (Common Stock [Member], USD $)
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0 Months Ended | 12 Months Ended | ||
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Dec. 09, 2013
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Dec. 31, 2013
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Dec. 31, 2012
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Dec. 31, 2011
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| Treasury Shares [Line Items] | ||||
| Value of share repurchase authorized by the Board of Directors during the period | $ 750,000,000 | |||
| Total shares | 10,830,000 | 9,376,000 | 2,052,000 | |
| Total cost | 472,263,000 | 317,687,000 | 65,885,000 | |
| Average price per share | $ 43.61 | $ 33.88 | $ 32.11 | |
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In the Open Market [Member]
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| Treasury Shares [Line Items] | ||||
| Total shares | 7,362,000 | 6,057,000 | 1,609,000 | |
| Total cost | 337,083,000 | 203,704,000 | 49,974,000 | |
| Average price per share | $ 45.79 | $ 33.63 | $ 31.07 | |
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From Employees [Member]
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| Treasury Shares [Line Items] | ||||
| Total shares | 468,000 | 319,000 | 443,000 | |
| Total cost | 19,080,000 | 10,483,000 | 15,911,000 | |
| Average price per share | $ 40.75 | $ 32.85 | $ 35.92 | |
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From Founding Shareholder [Member]
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| Treasury Shares [Line Items] | ||||
| Total shares | 3,000,000 | 3,000,000 | 0 | |
| Total cost | $ 116,100,000 | $ 103,500,000 | $ 0 | |
| Average price per share | $ 38.70 | $ 34.50 | $ 0.00 | |
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From Founding Shareholder [Member] | Trident [Member]
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| Treasury Shares [Line Items] | ||||
| Total shares | 3,000,000 | 3,000,000 | 0 | |