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COMMON STOCK REPURCHASE PROGRAM (Details) | 12 Months Ended
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Dec. 31, 2017 $ / shares shares
COMMON SHARE REPURCHASE PROGRAM |
Shares authorized for repurchase under share repurchase program (in shares) | 55,000,000
Shares purchased in the open market under share repurchase program (in shares) | 459,901
Average cost per share of shares purchased in the open market under share repurchase program (in dollars per share) | $ / shares | $ 89.58
Remaining shares available for repurchase under the stock repurchase program (in shares) | 8,428,574

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- Definition The number of shares authorized to be repurchased by an entity's Board of Directors under a stock repurchase plan. + References No definition available. + Details
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- Definition Total cost of shares repurchased divided by the total number of shares repurchased. + References Reference 1: 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 + Details
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