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STOCK-BASED COMPENSATION (Details) - USD ($) $ / shares in Units, $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2017 | Mar. 31, 2016
STOCK-BASED COMPENSATION |  |
Proceeds from stock option exercises | $ 15,908 | $ 20,960
Stock options |  |
STOCK-BASED COMPENSATION |  |
Award vesting period | 3 years |
Expiration period | 10 years |
Compensation expense | $ 6,900 | 8,900
Compensation expense, net of tax | 4,600 | 5,900
Income tax benefit related to compensation expense | 2,300 | 3,000
Fair value of shares vested | 16,900 | 16,300
Proceeds from stock option exercises | 15,900 |
Actual tax benefit realized for the tax deduction from option exercises | 5,100 |
Unrecognized compensation cost expected to be recognized in future periods | $ 23,400 |
Weighted-average period over which compensation cost is expected to be recognized | 2 years 3 months 18 days |
Stock options | Selling, research & development and administrative expenses |  |
STOCK-BASED COMPENSATION |  |
Compensation expense | $ 6,000 | 7,900
Restricted stock units |  |
STOCK-BASED COMPENSATION |  |
Compensation expense | 900 | 1,200
Unrecognized compensation cost expected to be recognized in future periods | $ 5,600 |
Weighted-average period over which compensation cost is expected to be recognized | 2 years 6 months |
Weighted-Average Grant-Date Fair Value |  |
Fair value of units vested | $ 2,800 | 656
Intrinsic value of units vested | $ 3,000 | $ 773
Stock Awards Plans | Stock options |  |
STOCK-BASED COMPENSATION |  |
Weighted-average fair value of stock options granted (in dollars per share) | $ 11.85 | $ 10.59
Assumptions used to estimate fair value of stock options granted |  |
Dividend Yield (as a percent) | 1.70% | 1.80%
Expected Stock Price Volatility (as a percent) | 15.80% | 16.90%
Risk-free Interest Rate (as a percent) | 2.20% | 1.60%
Expected Life of Option (years) | 6 years 8 months 12 days | 6 years 8 months 12 days
Stock options activity |  |
Outstanding at the beginning of the period (in shares) | 8,070,444 |
Granted (in shares) | 1,607,773 |
Exercised (in shares) | (452,677) |
Forfeited or expired (in shares) | (12,357) |
Outstanding at the end of the period (in shares) | 9,213,183 |
Exercisable at the end of the period (in shares) | 6,198,605 |
Weighted Average Exercise Price |  |
Outstanding at the beginning of the period (in dollars per share) | $ 56.36 |
Granted (in dollars per share) | 74.79 |
Exercised (in dollars per share) | 40.41 |
Forfeited or expired (in dollars per share) | 69.22 |
Outstanding at the end of the period (in dollars per share) | 60.35 |
Exercisable at the end of the period (in dollars per share) | $ 54.63 |
Weighted-Average Remaining Contractual Term (Years): |  |
Outstanding at the end of the period | 6 years 8 months 12 days |
Exercisable at the end of the period | 5 years 6 months |
Aggregate Intrinsic Value: |  |
Outstanding at the end of the period | $ 154,089 |
Exercisable at the end of the period | 139,129 |
Intrinsic Value of Options Exercised | $ 15,289 | $ 16,973
Stock Awards Plans | Restricted stock units |  |
STOCK-BASED COMPENSATION |  |
Award vesting period | 3 years |
Restricted stock unit activity |  |
Balance at the beginning of the period (in shares) | 72,127 |
Granted (in shares) | 78,276 |
Vested (in shares) | (40,963) |
Balance at the end of the period (in shares) | 109,440 |
Weighted-Average Grant-Date Fair Value |  |
Nonvested at the beginning of the period (in dollars per share) | $ 69.31 |
Granted (in dollars per share) | 73.29 |
Vested (in dollars per share) | 68.29 |
Nonvested at the end of the period (in dollars per share) | $ 72.54 |
Director Stock Option Plans | Stock options |  |
Stock options activity |  |
Outstanding at the beginning of the period (in shares) | 281,334 |
Outstanding at the end of the period (in shares) | 281,334 |
Exercisable at the end of the period (in shares) | 255,998 |
Weighted Average Exercise Price |  |
Outstanding at the beginning of the period (in dollars per share) | $ 56.45 |
Outstanding at the end of the period (in dollars per share) | 56.45 |
Exercisable at the end of the period (in dollars per share) | $ 55.44 |
Weighted-Average Remaining Contractual Term (Years): |  |
Outstanding at the end of the period | 5 years 8 months 12 days |
Exercisable at the end of the period | 5 years 6 months |
Aggregate Intrinsic Value: |  |
Outstanding at the end of the period | $ 5,802 |
Exercisable at the end of the period | $ 5,536 |
Intrinsic Value of Options Exercised |  | 436
Director Stock Option Plans | Restricted stock units |  |
STOCK-BASED COMPENSATION |  |
Award vesting period | 1 year |
Restricted stock unit activity |  |
Balance at the beginning of the period (in shares) | 15,745 |
Granted (in shares) | 0 |
Balance at the end of the period (in shares) | 15,745 |
Weighted-Average Grant-Date Fair Value |  |
Nonvested at the beginning of the period (in dollars per share) | $ 75.56 |
Nonvested at the end of the period (in dollars per share) | $ 75.56 |
New long-term incentive program |  |
STOCK-BASED COMPENSATION |  |
Compensation expense | $ 282 | $ 1,300
Performance period used to measure cumulative total shareholder return of common stock | 3 years |
Expected total expense related to program over the performance period | $ 2,700 |

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- Definition Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 14.F) -URI http://asc.fasb.org/extlink&oid=27013229&loc=d3e301413-122809 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5047-113901 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1)(i) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + 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 (i) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The total recognized tax benefit related to compensation cost for equity-based payment arrangements recognized in income during the period. + 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 (h)(1)(i) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Disclosure of the aggregate tax benefit realized from the exercise of stock options and the conversion of similar instruments during the annual period. + 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 (j) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The cash inflow associated with the amount received from holders exercising their stock options. This item inherently excludes any excess tax benefit, which the entity may have realized and reported separately. + 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 (j) -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 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3255-108585 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 + Details
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- Definition The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target 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)(2)(iii)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target 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)(2)(iii)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date. + 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)(2)(i)-(ii) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The weighted average fair value of nonvested awards on equity-based plans excluding option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, revenue or profit achievement stock award plan) for which the employer is contingently obligated to issue equity instruments or transfer assets to an employee who has not yet satisfied service or performance criteria necessary to gain title to proceeds from the sale of the award or underlying shares or units. + 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)(2)(i)-(ii) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period. + 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)(2)(iii)(2) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Fair value of share-based awards for which the grantee gained the right by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash. + 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 (d)(2) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The weighted average fair value as of grant date pertaining to an equity-based award plan other than a stock (or unit) option plan for which the grantee gained the right during the reporting period, by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash in accordance with the terms of the arrangement. + 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)(2)(iii)(2) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The estimated dividend rate (a percentage of the share price) to be paid (expected dividends) to holders of the underlying shares over the option's term. + 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 (f)(2)(iii) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The estimated measure of the percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period. + 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 (f)(2)(ii) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The risk-free interest rate assumption that is used in valuing an option on its own shares. + 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 (f)(2)(iv) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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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 Amount of accumulated difference between fair value of underlying shares on dates of exercise and exercise price on options exercised (or share units converted) into shares. + 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 (d)(2) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition For presentations that combine terminations, the number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan or that expired. + 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)(iv)(3)-(4) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Weighted average price of options that were either forfeited or expired. + 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)(iv)(3)-(4) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Gross number of share options (or share units) granted during the period. + References No definition available. + Details
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- Definition The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology. + 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 (d)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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