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STOCK INCENTIVE PLANS (Details) - USD ($) $ / shares in Units, $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Shares of common stock available for grant under stock incentive plans (in shares) | 2,900,000 |  |
Pretax stock-based compensation expense | $ 35,000 | $ 43,000 | $ 46,000
Income tax benefits recognized in earnings for stock-based compensation expense | $ 11,000 | $ 13,000 | $ 15,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward] |  |  |
Outstanding at January 1 (in shares) | 2,226,286 | 2,582,804 | 2,850,455
Granted (in shares) | 294,874 | 294,522 | 257,693
Exercised (in shares) | (317,110) | (587,441) | (479,452)
Canceled or expired (in shares) | (80,014) | (63,599) | (45,892)
Outstanding at December 31 (in shares) | 2,124,036 | 2,226,286 | 2,582,804
Weighted Average Price Per Share [Abstract] |  |  |
Outstanding at January 1, weighted average price per share (in dollars per share) | $ 169.96 | $ 149.01 | $ 132.67
Granted, weighted average price per share (in dollars per share) | 234.25 | 232.20 | 248.21
Exercised, weighted average price per share (in dollars per share) | 108.28 | 105.08 | 100.33
Canceled or expired, weighted average price per share (in dollars per share) | 210.01 | 216.76 | 199.80
Outstanding at December 31, weighted average price per share (in dollars per share) | $ 186.59 | $ 169.96 | $ 149.01
Options exercisable outstanding at January 1 (in shares) | 1,411,460 | 1,647,903 | 1,652,417
Options exercisable outstanding at December 31 (in shares) | 1,346,707 | 1,411,460 | 1,647,903
Stock Options Exercised [Abstract] |  |  |
Fair value of options exercised | $ 8,086 | $ 14,423 | $ 11,167
Total intrinsic value of options exercised | 35,800 | 73,671 | 71,924
Fair value of options vested | 14,535 | 16,047 | 16,115
Settlements of options exercised | $ 34,573 | $ 61,863 | $ 47,974
Stock Options [Member] |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Award vesting period | 3 years |  |
Expiration period | 10 years |  |
Stock Options Exercised [Abstract] |  |  |
Unrecognized compensation | $ 8,600 |  |
Weighted average period to recognize (in years) | 1 year 9 months 18 days |  |

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