STOCK-BASED COMPENSATION (Details) - USD ($) $ / shares in Units, $ in Thousands | 3 Months Ended |
Mar. 31, 2019 | Mar. 31, 2018 |
STOCK-BASED COMPENSATION | | |
Proceeds from stock option exercises | $ 20,939 | $ 34,880 |
Stock options | | |
STOCK-BASED COMPENSATION | | |
Award vesting period | 3 years | |
Expiration period | 10 years | |
Compensation expense | $ 1,800 | 4,900 |
Compensation expense, net of tax | 1,500 | 3,500 |
Income tax benefit related to compensation expense | 300 | 1,400 |
Fair value of shares vested | 12,200 | 16,500 |
Proceeds from stock option exercises | 20,900 | |
Actual tax benefit realized for the tax deduction from option exercises | 3,400 | |
Unrecognized compensation cost expected to be recognized in future periods | $ 6,500 | |
Weighted-average period over which compensation cost is expected to be recognized | 1 year 4 months 24 days | |
Stock options | Selling, research & development and administrative expenses | | |
STOCK-BASED COMPENSATION | | |
Compensation expense | $ 1,600 | 4,000 |
Restricted stock units | | |
STOCK-BASED COMPENSATION | | |
Compensation expense | 4,700 | 2,600 |
Actual tax benefit realized for the tax deduction from option exercises | 408 | |
Unrecognized compensation cost expected to be recognized in future periods | $ 42,000 | |
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 | $ 2,700 | 1,000 |
Intrinsic value of units vested | $ 3,200 | $ 1,300 |
Restricted stock units (time-based) | | |
STOCK-BASED COMPENSATION | | |
Award vesting period | 3 years | |
Restricted stock unit activity | | |
Balance at the beginning of the period (in shares) | 261,487 | |
Granted (in shares) | 112,553 | |
Vested (in shares) | (32,202) | |
Forfeited (in shares) | (3,786) | |
Balance at the end of the period (in shares) | 338,052 | |
Weighted-Average Grant-Date Fair Value | | |
Nonvested at the beginning of the period (in dollars per share) | $ 91.78 | |
Granted (in dollars per share) | 101.96 | |
Vested (in dollars per share) | 85.13 | |
Forfeited (in dollars per share) | 104.54 | |
Nonvested at the end of the period (in dollars per share) | $ 95.66 | |
Restricted stock units (performance-based) | | |
STOCK-BASED COMPENSATION | | |
Award vesting period | 3 years | |
Assumptions used to estimate fair value of stock options granted | | |
Dividend Yield (as a percent) | 1.30% | 1.43% |
Expected Stock Price Volatility (as a percent) | 16.50% | 12.30% |
Risk-free Interest Rate (as a percent) | 2.19% | 2.42% |
Assumptions used to estimate fair value of restricted stock units granted | | |
Fair value per stock award (in dollars per share) | $ 134.97 | $ 128.70 |
Grant date stock price (in dollars per share) | $ 104.51 | $ 89.42 |
Expected Stock Price Volatility (as a percent) | 16.50% | 12.30% |
Expected average volatility of peer companies (as a percent) | 31.90% | 27.50% |
Correlation assumption (as a percent) | 37.40% | 20.20% |
Risk-free Interest Rate (as a percent) | 2.19% | 2.42% |
Dividend Yield (as a percent) | 1.30% | 1.43% |
Restricted stock unit activity | | |
Balance at the beginning of the period (in shares) | 69,990 | |
Granted (in shares) | 122,737 | |
Balance at the end of the period (in shares) | 192,727 | |
Weighted-Average Grant-Date Fair Value | | |
Nonvested at the beginning of the period (in dollars per share) | $ 111.55 | |
Granted (in dollars per share) | 120.62 | |
Nonvested at the end of the period (in dollars per share) | $ 117.32 | |
Stock Awards Plans | Stock options | | |
STOCK-BASED COMPENSATION | | |
Weighted-average fair value of stock options granted (in dollars per share) | | $ 14.82 |
Assumptions used to estimate fair value of stock options granted | | |
Dividend Yield (as a percent) | | 1.50% |
Expected Stock Price Volatility (as a percent) | | 14.20% |
Risk-free Interest Rate (as a percent) | | 2.80% |
Expected Life of Option (years) | | 6 years 7 months 6 days |
Stock options activity | | |
Outstanding at the beginning of the period (in shares) | 6,761,055 | |
Exercised (in shares) | (349,320) | |
Forfeited or expired (in shares) | (5,842) | |
Outstanding at the end of the period (in shares) | 6,405,893 | |
Exercisable at the end of the period (in shares) | 5,593,702 | |
Weighted Average Exercise Price | | |
Outstanding at the beginning of the period (in dollars per share) | $ 65.76 | |
Exercised (in dollars per share) | 59.81 | |
Forfeited or expired (in dollars per share) | 58.11 | |
Outstanding at the end of the period (in dollars per share) | 66.10 | |
Exercisable at the end of the period (in dollars per share) | $ 63.88 | |
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 3 months 18 days | |
Aggregate Intrinsic Value: | | |
Outstanding at the end of the period | $ 258,093 | |
Exercisable at the end of the period | 237,778 | |
Intrinsic Value of Options Exercised | $ 14,047 | $ 22,804 |
Assumptions used to estimate fair value of restricted stock units granted | | |
Expected Stock Price Volatility (as a percent) | | 14.20% |
Risk-free Interest Rate (as a percent) | | 2.80% |
Dividend Yield (as a percent) | | 1.50% |
Director Stock Option Plans | Stock options | | |
Stock options activity | | |
Outstanding at the beginning of the period (in shares) | 155,200 | |
Exercised (in shares) | (1,000) | |
Outstanding at the end of the period (in shares) | 154,200 | |
Exercisable at the end of the period (in shares) | 154,200 | |
Weighted Average Exercise Price | | |
Outstanding at the beginning of the period (in dollars per share) | $ 58.13 | |
Exercised (in dollars per share) | 53.72 | |
Outstanding at the end of the period (in dollars per share) | 58.16 | |
Exercisable at the end of the period (in dollars per share) | $ 58.16 | |
Weighted-Average Remaining Contractual Term (Years): | | |
Outstanding at the end of the period | 3 years 10 months 24 days | |
Exercisable at the end of the period | 3 years 10 months 24 days | |
Aggregate Intrinsic Value: | | |
Outstanding at the end of the period | $ 7,437 | |
Exercisable at the end of the period | 7,437 | |
Intrinsic Value of Options Exercised | $ 51 | $ 1,608 |
Director Stock Option Plans | Restricted stock units | | |
STOCK-BASED COMPENSATION | | |
Award vesting period | 1 year | |
Director Stock Option Plans | Restricted stock units (time-based) | | |
Restricted stock unit activity | | |
Balance at the end of the period (in shares) | 14,257 | |
New long-term incentive program | | |
STOCK-BASED COMPENSATION | | |
Compensation expense | $ 206 | $ 409 |
Expected total expense related to program over the performance period | $ 2,800 | |