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CAPITAL STOCK AND STOCK AWARD PLANS - Summary of Stock Option Activity (Details) - USD ($) $ / shares in Units, $ in Thousands | 12 Months Ended
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Dec. 31, 2016 | Dec. 31, 2015
Options Outstanding - Number of Shares [Roll Forward] |  |
Outstanding, Beginning Balance (in shares) | 6,150,861 |
Grants (in shares) | 1,250,154 |
Exercised (in shares) | (86,840) |
Terminated (in shares) | (306,252) |
Outstanding, Ending Balance (in shares) | 7,007,923 | 6,150,861
Vested (in shares) | 2,646,205 |
Exercisable (in shares) | 2,646,205 |
Options Outstanding - Weighted Average Exercise Price [Roll Forward] |  |
Outstanding, Beginning Balance (in dollars per share) | $ 65.03 |
Grants (in dollars per share) | 76.72 |
Exercised (in dollars per share) | 61.82 |
Terminated (in dollars per share) | 68.81 |
Outstanding, Ending Balance (in dollars per share) | 67.00 | $ 65.03
Vested (in dollars per share) | 64.63 |
Exercisable (in dollars per share) | $ 64.63 |
Aggregate Intrinsic Value (in thousands) |  |
Aggregate Intrinsic Value, outstanding options | $ 43,875 | $ 0
Average Remaining Life (years) |  |
Average Remaining Life, outstanding options | 7 years 8 months 12 days | 8 years 1 month 6 days
Vested | 6 years 8 months 12 days |
Exercisable | 6 years 8 months 12 days |

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- Definition The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iii) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iii) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Number of options outstanding, including both vested and non-vested options. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(i)-(ii) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(i) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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